CN218085870U - Folding vertical pipe mechanism for folding bicycle - Google Patents

Abstract

The utility model relates to a folding riser mechanism for folding car, including last connecting pipe, lower connecting pipe and first locking unit, go up the connecting pipe articulate in lower connecting pipe, first locking unit includes latch segment, unsteady latch segment, fixing base and starting-up piece, the latch segment install in go up in the connecting pipe, the fixing base install in down in the connecting pipe, unsteady latch segment install with sliding in the fixing base, starting-up piece connect in unsteady latch segment, during the locking, unsteady latch segment and the mutual block of latch segment and will go up connecting pipe and lower connecting pipe locking, when opening, make unsteady latch segment and latch segment break away from each other through pressing down starting-up piece. The utility model discloses well first locking unit is located the inside of pipe fitting, and locking part all adopts hidden structure promptly, compact structure not only, and the outward appearance is more concise generous, can avoid damaging moreover, and life is longer.

Description

Folding vertical pipe mechanism for folding bicycle

Technical Field

The utility model relates to a riser mechanism, concretely relates to folding riser mechanism for folding car.

Background

Folding vehicle receives liking of a lot of people owing to its ingenious structure and small and exquisite portable volume, and the folding riser mechanism that uses at present, the structure is complicated, and it is high to make the degree of difficulty, and the product is heavy, and needs an adult to use very big strength when locking, and locking simultaneously is insecure, and 6 individual degree of freedom directions all have a little shake the momentum, and do not conform to the design development trend of lightweight, simplification.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model provides a folding riser mechanism for folding car, locking part in this riser mechanism is located connecting pipe and lower connecting pipe, and more convenience when unblanking, consequently has advantages such as long service life, convenient operation, locking are firm.

The utility model discloses a solve the technical scheme that its technical problem adopted and be:

a folding riser mechanism for a folding bicycle comprises an upper connecting pipe, a lower connecting pipe and a first locking unit, wherein the upper connecting pipe is hinged to the lower connecting pipe, the first locking unit comprises a locking block, a floating locking block, a fixed seat and a starting piece, the locking block is installed in the upper connecting pipe, the fixed seat is installed in the lower connecting pipe, the floating locking block is installed in the fixed seat in a sliding mode, the starting piece is connected to the floating locking block, when the folding riser mechanism is locked, the floating locking block and the locking block are clamped with each other to lock the upper connecting pipe and the lower connecting pipe, and when the folding riser mechanism is opened, the floating locking block and the locking block are separated from each other by pressing the starting piece.

Preferably, the locking block is fixedly installed in the upper connecting pipe, the fixed seat is fixedly installed in the lower connecting pipe, the floating locking block is slidably connected to the fixed seat through a fixed rod, the actuating member is fixed to the floating locking block through an actuating member fixing screw, and a first elastic member is installed between the floating locking block and the fixed seat.

Preferably, the portable emergency escape device further comprises a second locking unit, the second locking unit comprises a lock tongue and an opening rod, the lock tongue is installed in the locking block, the opening rod is installed in the upper connecting pipe, the opening rod abuts against the lock tongue, and when the portable emergency escape device is locked, the lock tongue is clamped in the floating locking block.

Preferably, the spring bolt is rotationally installed in the locking block, a third elastic piece is installed between the spring bolt and the locking block, the opening rod penetrates through the upper connecting pipe, one end of the opening rod extends into the inner side of the upper connecting pipe, and the other end of the opening rod protrudes out of the outer side of the upper connecting pipe.

Preferably, the locking block is provided with a first accommodating groove and a first inclined plane, the upper end of the lock tongue is rotatably installed in the first accommodating groove through a lock tongue fixing screw, the lower end of the lock tongue is provided with a hook claw for hooking the floating locking block, the third elastic piece is arranged in the first accommodating groove, the upper connecting pipe is provided with an installation groove, one end of the opening rod is a big head end, the opening rod is installed in the installation groove, and the big head end of the opening rod is positioned at the inner side of the upper connecting pipe, the other end cover of opening lever establishes the pole cap, and this pole cap is located the outside of connecting pipe, the fourth elastic component is located to the cover on the opening lever, the third elastic component is the spring leaf, the both sides of spring leaf push up respectively tightly in latch segment and spring bolt, the spring bolt is arranged in the slope in the first storage tank, the fourth elastic component is the spring, the spring is arranged in the mounting groove and the both ends of this spring support respectively lean on in the pole cap with the stub end of opening lever.

Preferably, a second accommodating groove is formed in the fixing seat, a sliding groove is formed in the second accommodating groove, the floating locking block is vertically arranged in the second accommodating groove, one end of the fixing rod is fixedly connected to the floating locking block, the other end of the fixing rod is inserted into the sliding groove, a second elastic piece is arranged between the fixing rod and the floating locking block, a second inclined surface is formed in the floating locking block, a clamping groove clamped in the spring bolt is formed in the second inclined surface, the starting piece is fixed to the floating locking block through a connecting rod, and the connecting rod is fixed to the starting piece through a starting piece fixing screw.

Preferably, the locking block is fixedly installed in the upper connecting pipe, the fixing seat is fixedly installed in the lower connecting pipe, the floating locking block is slidably connected to the fixing seat through a fixing rod, the starting piece is screwed to the floating locking block, and a first elastic piece is installed between the floating locking block and the fixing seat.

Preferably, the lock further comprises a second locking unit, the second locking unit comprises a lock tongue and a sliding block, the lock tongue is slidably installed in the upper connecting pipe, the sliding block is fixedly connected to the lock tongue, the sliding block can drive the lock tongue to move up and down, and the lock tongue is clamped on the starting piece when the lock is locked.

Preferably, the locking block extends downwards to form a protruding block, a notch is formed in one side of the protruding block, a slot and a sliding groove are formed in the fixing base, the starting piece comprises two supporting rods and a stop lever which are arranged in parallel, two ends of the stop lever are connected to one end of each supporting rod respectively, the other end of each supporting rod is in threaded connection with the floating locking block, the starting piece is horizontally installed in the sliding groove through the supporting rods, the floating locking block comprises a clamping portion and a sliding portion, and the sliding portion is connected to the fixing base in a sliding mode through the fixing rod.

Preferably, a first built-in groove which is vertically arranged is arranged in the upper connecting pipe, a sliding hole is formed in the outer wall of the upper connecting pipe, the first built-in groove is communicated with the sliding hole, a second built-in groove which is vertically arranged is formed in the lower connecting pipe, the first built-in groove and the second built-in groove are aligned up and down, the lock tongue is inserted into the first built-in groove, the sliding block is connected to the lock tongue through a positioning rod, the positioning rod can move up and down in the sliding hole, the starting piece is located on one side of the second built-in groove, and a fifth elastic piece is installed between the lock tongue and the upper connecting pipe.

The beneficial effects of the utility model are that:

1) The utility model is provided with a first locking unit, wherein the first locking unit comprises a locking block, a floating locking block, a fixed seat and a starting piece, the locking block, the floating locking block and the fixed seat are all positioned inside an upper connecting pipe and a lower connecting pipe, the structure is compact, the appearance is more simple and elegant, the damage can be avoided, and the service life is longer; when unlocking, the unlocking can be realized only by operating the starting piece, so that the operation is very convenient; the locking block and the floating locking block are matched through an inclined plane, and the floating locking block is provided with an elastic piece, so that the mechanism is firm in locking and cannot shake;

2) Because the locking unit in the mechanism is a normally closed mechanism, the system does not need to be suddenly and automatically opened after locking, and the safety is higher; meanwhile, the locking force and the acting force are vertical to each other, so that the product can bear a very large acting force by using a very small locking force, the four-two-pull jack function is realized, the opening and closing can be completed by only a very small force, the operation is very convenient, and the product can be used by both the old and the young;

3) The utility model discloses in still be equipped with second locking unit, including spring bolt, opening lever and sliding block etc. in the second locking unit, during the locking, the spring bolt will float the locking piece or start the piece and pin, when unblanking, need open the back with second locking unit earlier, can open first locking unit, can prevent the use because the maloperation is opened this mechanism, consequently further improved the utility model discloses a security.

Drawings

Fig. 1 is an exploded view of embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 3 is a side view of embodiment 1 of the present invention;

fig. 4 is a side view from another perspective of embodiment 1 of the present invention;

FIG. 5 isbase:Sub>A cross-sectional view taken along A-A of FIG. 4;

FIG. 6 is an enlarged view at B in FIG. 5;

FIG. 7 is an enlarged view at C of FIG. 6;

fig. 8 is a schematic structural view of an upper connecting pipe according to embodiment 1 of the present invention;

fig. 9 is a schematic structural view of a locking block in embodiment 1 of the present invention;

fig. 10 is a schematic structural view of a latch bolt according to embodiment 1 of the present invention;

fig. 11 is a schematic structural view of a floating lock block and a fixed seat according to embodiment 1 of the present invention;

fig. 12 is a partial schematic structural view of embodiment 1 of the present invention;

fig. 13 is an exploded view of embodiment 2 of the present invention;

fig. 14 is a schematic structural diagram of embodiment 2 of the present invention;

fig. 15 is a side view of embodiment 2 of the present invention;

FIG. 16 is a cross-sectional view taken along line D-D of FIG. 15;

fig. 17 is a schematic structural view of an upper connecting pipe according to embodiment 2 of the present invention;

fig. 18 is a partial structural schematic view of embodiment 2 of the present invention;

in the figure: 100-upper connecting pipe, 101-rotating shaft screw rod, 102-rotating shaft screw cap, 103-mounting screw, 104-mounting groove, 105-sliding hole, 106-first built-in groove, 200-lower connecting pipe, 201-second built-in groove,

310-a locking block, 311-a first receiving groove, 312-a first inclined plane,

410-floating locking block, 411-clamping groove, 412-second inclined plane, 413-fixed rod, 414-first elastic element, 415-second elastic element,

510-a fixed seat, 511-a second containing groove, 512-a chute,

610-starting piece, 611-connecting rod, 612-starting piece fixing screw,

710-locking tongue, 711-hook claw, 712-third elastic element, 713-locking tongue fixing screw, 714-opening rod, 715-rod cap, 716-fourth elastic element,

320-locking block, 321-convex block, 322-notch,

420-floating locking block, 421-clamping part, 422-sliding part, 423-fixed rod, 424-first elastic piece,

520-fixed seat, 521-slot, 522-sliding groove,

620-actuating member, 621-supporting bar, 622-blocking bar,

720-lock tongue, 721-positioning rod, 722-sliding block, 723-fifth elastic element.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Example 1: as shown in fig. 1 to 12, a folding riser mechanism for a folding vehicle includes an upper connection pipe 100, a lower connection pipe 200, and a first locking unit, wherein the upper connection pipe 100 is hinged to the lower connection pipe 200, the first locking unit includes a locking block, a floating locking block, a fixing seat, and an actuating member, the locking block is installed in the upper connection pipe 100, the fixing seat is installed in the lower connection pipe 200, the floating locking block is slidably installed in the fixing seat, the actuating member is connected to the floating locking block, when locked, the floating locking block and the locking block are engaged with each other to lock the upper connection pipe 100 and the lower connection pipe 200, and when unlocked, the floating locking block and the locking block are disengaged from each other by pressing the actuating member.

An upper lug is arranged on one side of the upper connecting pipe 100, a lower lug is arranged on one side of the lower connecting pipe 200, when the bicycle frame is installed, the lower lug is inserted into the upper lug, and the upper lug and the lower lug are hinged with each other through a rotating shaft screw 101, as shown in fig. 1-3, the upper connecting pipe 100 and the lower connecting pipe 200 are hinged with each other through the lugs and the rotating shaft screw 101, the upper connecting pipe 100 can rotate around the rotating shaft screw 101 relative to the lower connecting pipe 200 to complete folding of the bicycle frame, and two ends of the rotating shaft screw 101 protruding out of the lugs are screwed with rotating shaft nuts 102. The utility model discloses utilize first locking unit to lock last connecting pipe 100 and lower connecting pipe 200, the latch segment in the first locking unit is fixed in last connecting pipe 100, and the latch segment that floats can slide in the fixing base, and under the normal conditions, the latch segment block that floats is in the latch segment, goes up the connecting pipe and is in the lock state with lower connecting pipe, when needing to fold, presses down the starter to make the latch segment that floats slide and break away from the latch segment, consequently can wind the connecting pipe rotation down with last connecting pipe, and folding riser mechanism. The first locking unit is positioned inside the pipe fitting, namely, all the locking parts adopt a hidden structure, so that the structure is compact, the appearance is more concise and elegant, the damage can be avoided, and the service life is longer; because the locking unit in the mechanism is a normally closed mechanism, the system does not need to be suddenly and automatically opened after locking, and the safety is higher; meanwhile, the locking force and the acting force are mutually vertical, so that the product can bear a very large acting force by using a very small locking force, the four-two-pull jack function is realized, the product can be opened and closed only by using a very small force, the operation is very convenient, and the product can be used by both the old and the young.

As shown in fig. 5 to 6, the locking block 310 is fixedly installed in the upper connection pipe 100, the fixing seat 510 is fixedly installed in the lower connection pipe 200, the floating locking block 410 is slidably connected to the fixing seat 510 by a fixing rod 413, the actuating member 610 is fixed to the floating locking block 410 by an actuating member fixing screw 612, and the first elastic member 414 is installed between the floating locking block 410 and the fixing seat 510. The method comprises the following specific steps: the locking block 310 is fixed inside the upper connecting pipe 100 through a mounting screw 103, the fixing seat 510 is fixed inside the lower connecting pipe 200 through the mounting screw 103, the floating locking block 410 is vertically installed inside the fixing seat 510, the floating locking block 410 can move up and down along the fixing seat 510 under the driving of the starting piece 610, when the floating locking block 410 moves down, the first elastic piece 414 is compressed, and after the external force disappears, the floating locking block resets under the restoring force action of the first elastic piece, and the first elastic piece is preferably a spring.

Embodiment 1 further includes a second locking unit, the second locking unit includes a locking tongue 710 and an opening rod 714, the locking tongue 710 is installed in the locking block 310, the opening rod 714 is installed in the upper connecting pipe 100, and the opening rod abuts against the locking tongue 710, and when locked, the locking tongue 710 is engaged with the floating locking block 410. During unlocking, the unlocking rod 714 needs to be pressed down first, the unlocking rod pushes the bolt 710 to be separated from the floating locking block 410, and then the starting piece slides downwards to drive the floating locking block to move downwards so as to realize complete unlocking, so that the floating locking block is clamped by the second locking unit to prevent misoperation, and the safety performance of the product is further improved.

As shown in fig. 5 to 6, the locking tongue 710 is rotatably installed in the locking block 310, a third elastic member 712 is installed between the locking tongue 710 and the locking block 310, the opening rod 714 is inserted into the upper connection pipe 100, and one end of the opening rod 714 extends into the inner side of the upper connection pipe and the other end protrudes out of the outer side of the upper connection pipe.

As shown in fig. 6 to 10, the locking block 310 is provided with a first receiving groove 311 and a first inclined surface 312, the upper end of the locking tongue 710 is rotatably installed in the first receiving groove 311 by a locking tongue fixing screw 713, the lower end of the locking tongue is provided with a hook claw 711, the hook claw 711 is used for hooking the floating locking block 410, the third elastic member 712 is disposed in the first receiving groove 311, the upper connecting pipe 100 is provided with a receiving groove 104, one end of the opening rod 714 is a big end, the opening rod 714 is installed in the receiving groove 104, the big end of the opening rod is located inside the upper connecting pipe 100, the other end of the opening rod 714 is sleeved with a rod cap 715, the rod cap 715 is located outside the upper connecting pipe 100, the opening rod 714 is sleeved with a fourth elastic member 716, the third elastic member 712 is a spring plate, two sides of the spring plate respectively abut against the locking block 310 and the locking tongue 710, the locking tongue 710 is obliquely disposed in the first receiving groove 311, the fourth elastic member 716 is disposed in the receiving groove 104, and two ends of the spring abut against the big end of the opening rod 715 respectively. The mounting groove 104 is horizontally opened on the upper connecting pipe 100, the opening rod 714 is inserted into the mounting groove 104, the diameter of the large head end of the opening rod is larger than that of the mounting groove 104, the large head end abuts against the locking tongue 710, when the lock is unlocked, the rod cap 715 is pressed, the rod cap pushes the locking tongue 710 to move backwards, the spring piece is compressed, the hook jaw 711 on the locking tongue 710 is separated from the floating locking block 410, meanwhile, the fourth elastic element 716 is compressed, and the rod cap is reset under the restoring force action of the fourth elastic element 716 after being released.

As shown in fig. 11, a second receiving groove 511 is formed in the fixing seat 510, a sliding groove 512 is formed in the second receiving groove 511, the floating lock block 410 is vertically disposed in the second receiving groove 511, one end of the fixing rod 413 is fixedly connected to the floating lock block 410, the other end of the fixing rod 413 is inserted into the sliding groove 512, a second elastic element 415 is disposed between the fixing rod 413 and the floating lock block 410, a second inclined surface 412 is disposed on the floating lock block 410, a clamping groove 411 which is clamped with the lock tongue is disposed on the second inclined surface 412, as shown in fig. 6, the starting piece 610 is fixed to the floating lock block through a connecting rod 611, and the connecting rod 611 is fixed to the starting piece 610 through a starting piece fixing screw 612. The diameter of one end of the fixed rod 413 is smaller than that of the other end, the large head end of the fixed rod 413 is inserted into the sliding groove 512, so that the fixed rod 413 cannot fall off from the sliding groove but can move up and down along the sliding groove, the third elastic element 712 can eliminate the gap between the floating locking block and the fixed seat, as shown in fig. 6, when the connection device is locked, the second inclined surface 412 on the floating locking block is tightly matched with the first inclined surface 312 on the locking block, the hook jaw 711 of the lock tongue is just inserted into the clamping groove 411 of the floating locking block 410, and the floating locking block 410 limits the upper connection pipe 100 to be incapable of being opened.

Example 2: as shown in fig. 13 to 18, the locking block 320 is fixedly installed in the upper connection pipe 100, the fixing seat 520 is fixedly installed in the lower connection pipe 200, the floating locking block 420 is slidably connected to the fixing seat 520 by a fixing rod 423, the actuating member 620 is screw-coupled to the floating locking block 420, and a first elastic member 424 is installed between the floating locking block 420 and the fixing seat 520. The method specifically comprises the following steps: the floating locking piece 420 is horizontally arranged in the fixed seat 520, the starting piece 620 is pressed, the floating locking piece 420 can move back and forth along the fixed seat 520, when the floating locking piece 420 moves back, the floating locking piece leaves the locking piece, meanwhile, the first elastic piece 424 is compressed, and after the external force disappears, the floating locking piece resets under the restoring force action of the first elastic piece.

As shown in fig. 16 and 18, the embodiment 2 further includes a second locking unit, the second locking unit includes a locking tongue 720 and a sliding block 722, the locking tongue 720 is slidably installed in the upper connecting pipe 100, the sliding block 722 is fixedly connected to the locking tongue 720 and can drive the locking tongue to move up and down, and when the locking tongue 720 is locked, the locking tongue 720 is clamped to the actuating member 620. The latch 720 extends into the gap of the actuating member 620 to clamp the actuating member, and when unlocking, the slider 722 needs to be pushed upwards first, the slider 722 drives the latch 720 to go upwards, so that the latch is separated from the actuating member 620, and then the floating locking block is separated from the locking block by pressing the actuating member, so that complete unlocking can be realized.

As shown in fig. 18, the locking block 320 extends downward to form a protrusion 321, one side of the protrusion 321 is provided with a notch 322, the fixing seat 520 is provided with a slot 521 and a sliding slot 522, the actuating member 620 includes two supporting rods 621 and a blocking rod 622 which are arranged in parallel, two ends of the blocking rod 622 are respectively connected to one end of the supporting rods 621, the other end of the supporting rods 621 is screwed to the floating locking block 420, the actuating member 620 is horizontally installed in the sliding slot 522 through the supporting rods 621, the floating locking block 420 includes a clamping portion 421 and a sliding portion 422, and the sliding portion 422 is slidably connected to the fixing seat 520 through a fixing rod 423. The lug 321 card on the latch segment 320 is gone into in the slot 521 of fixing base, the block portion 421 card of unsteady latch segment 420 is gone into in the breach 322 of latch segment and is locked the latch segment, through the inclined plane cooperation between unsteady latch segment and the latch segment, first elastic component 424 horizontally is arranged in the fixing base 520, and the one end top of first elastic component leans on in unsteady latch segment, and the other end top leans on in the fixing base, and first elastic component is used for the restoration of unsteady latch segment.

As shown in fig. 13 and 17, a first built-in groove 106 is vertically arranged in the upper connecting pipe 100, a sliding hole 105 is formed in an outer wall of the upper connecting pipe 100, the first built-in groove 106 is communicated with the sliding hole 105, the lower connecting pipe 200 is provided with a second built-in groove 201 which is vertically arranged, the first built-in groove 106 and the second built-in groove 201 are aligned up and down, the latch tongue 720 is inserted into the first built-in groove 106, the sliding block 722 is connected to the latch tongue 720 through a positioning rod 721, the positioning rod 721 can move up and down in the sliding hole 105, the actuating member 620 is positioned at one side of the second built-in groove 201, and a fifth elastic member 723 is installed between the latch tongue 720 and the upper connecting pipe 100. The latch 720 is vertically installed in the first built-in groove 106 of the upper connecting pipe, one end of the fifth elastic member 723 abuts against the upper connecting pipe 100, and the other end abuts against the latch 720, when the upper connecting pipe 100 and the lower connecting pipe 200 are closed, the latch 720 moves downwards under the action of the fifth elastic member, the lower end of the latch is inserted into the second built-in groove 201 of the lower connecting pipe to fasten the starting member, therefore, in this case, the starting member 620 cannot be pressed down, when unlocking is required, the sliding block 722 is pushed upwards, the sliding block drives the latch 720 to move upwards to separate from the starting member 620, then the starting member is pressed down, and the starting member pushes the floating locking block to separate from the locking block to complete the unlocking action.

The utility model discloses well embodiment 1's operation process: when the lock is unlocked, the rod cap 715 is pressed, the rod cap pushes the lock tongue 710 to move backwards, the spring leaf is compressed, the hook jaw 711 on the lock tongue 710 is separated from the floating lock block 410, meanwhile, the fourth elastic piece 716 is compressed, the starting piece 610 is pushed downwards, the starting piece drives the floating lock block 410 to slide downwards to be separated from the lock block 320, and finally, the upper connecting pipe rotates around the lower connecting pipe, so that the folding operation is completed.

The utility model discloses well embodiment 2's operation process: when the lock is unlocked, the sliding block 722 is pushed upwards, the sliding block 722 drives the lock tongue 720 to move upwards, so that the lock tongue is separated from the actuating member 620, and then the actuating member 620 is pressed down, so that the floating lock block 420 is retreated to be separated from the locking block 320, and the lock can be completely unlocked.

It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The utility model provides a folding riser mechanism for folding car which characterized in that: the upper connecting pipe (100) is hinged to the lower connecting pipe (200), the first locking unit comprises a locking block, a floating locking block, a fixed seat and a starting piece, the locking block is installed in the upper connecting pipe (100), the fixed seat is installed in the lower connecting pipe (200), the floating locking block is installed in the fixed seat in a sliding mode, the starting piece is connected to the floating locking block, the floating locking block and the locking block are clamped with each other to lock the upper connecting pipe (100) and the lower connecting pipe (200) during locking, and the floating locking block and the locking block are separated from each other by pressing the starting piece during opening.

2. The folding riser mechanism for a folding cart of claim 1, wherein: the locking block (310) is fixedly arranged in the upper connecting pipe (100), the fixed seat (510) is fixedly arranged in the lower connecting pipe (200), the floating locking block (410) is slidably connected to the fixed seat (510) through a fixed rod (413), the actuating piece (610) is fixed to the floating locking block (410) through an actuating piece fixing screw (612), and a first elastic piece (414) is arranged between the floating locking block (410) and the fixed seat (510).

3. The folding riser mechanism for a folding cart of claim 2, wherein: the locking device is characterized by further comprising a second locking unit, wherein the second locking unit comprises a lock tongue (710) and an opening rod (714), the lock tongue (710) is installed in the locking block (310), the opening rod (714) is installed in the upper connecting pipe (100) and the opening rod abuts against the lock tongue (710), and when the locking device is locked, the lock tongue (710) is clamped on the floating locking block (410).

4. The folding riser mechanism for a folding cart of claim 3, wherein: the lock tongue (710) is rotatably installed in the locking block (310), a third elastic piece (712) is installed between the lock tongue (710) and the locking block (310), the opening rod (714) penetrates through the upper connecting pipe (100), one end of the opening rod (714) extends into the inner side of the upper connecting pipe, and the other end of the opening rod protrudes out of the outer side of the upper connecting pipe.

5. The folding riser mechanism for a folding cart of claim 4, wherein: the locking block (310) is provided with a first containing groove (311) and a first inclined surface (312), the upper end of the bolt (710) is rotatably mounted in the first receiving groove (311) through a bolt fixing screw (713), the lower end of the bolt is provided with a hook claw (711), the hook claw (711) is used for hooking the floating locking block (410), the third elastic piece (712) is arranged in the first accommodating groove (311), an installation groove (104) is arranged on the upper connecting pipe (100), one end of the opening rod (714) is a big end, the opening rod (714) is arranged in the mounting groove (104), the big end of the opening rod is positioned at the inner side of the upper connecting pipe (100), the other end of the opening rod (714) is sleeved with a rod cap (715), the rod cap (715) is positioned at the outer side of the upper connecting pipe (100), the opening rod (714) is sleeved with a fourth elastic piece (716), the third elastic part (712) is a spring piece, two sides of the spring piece are respectively tightly propped against the locking block (310) and the bolt (710), the locking tongue (710) is slantingly disposed in the first receiving groove (311), the fourth elastic piece (716) is a spring, the spring is arranged in the mounting groove (104), and two ends of the spring respectively abut against the rod cap (715) and the big head end of the opening rod.

6. A folding riser mechanism for a folding cart as claimed in claim 3, wherein: the locking device is characterized in that a second accommodating groove (511) is formed in the fixed seat (510), a sliding groove (512) is formed in the second accommodating groove (511), the floating locking block (410) is vertically arranged in the second accommodating groove (511), one end of the fixed rod (413) is fixedly connected to the floating locking block (410), the other end of the fixed rod is inserted into the sliding groove (512), a second elastic piece (415) is arranged between the fixed rod (413) and the floating locking block (410), a second inclined surface (412) is arranged on the floating locking block (410), a clamping groove (411) which is clamped with the locking tongue is formed in the second inclined surface (412), the starting piece (610) is fixed on the floating locking block through a connecting rod (611), and the connecting rod (611) is fixed on the starting piece (610) through a starting piece fixing screw (612).

7. The folding riser mechanism for a folding cart of claim 1, wherein: the locking block (320) is fixedly arranged in the upper connecting pipe (100), the fixed seat (520) is fixedly arranged in the lower connecting pipe (200), the floating locking block (420) is slidably connected to the fixed seat (520) through a fixed rod (423), the starting piece (620) is screwed on the floating locking block (420), and a first elastic piece (424) is arranged between the floating locking block (420) and the fixed seat (520).

8. The folding riser mechanism for a folding cart of claim 7, wherein: the locking device is characterized by further comprising a second locking unit, wherein the second locking unit comprises a bolt (720) and a sliding block (722), the bolt (720) is slidably installed in the upper connecting pipe (100), the sliding block (722) is fixedly connected to the bolt (720) and can drive the bolt to move up and down, and the bolt (720) is clamped on the starting piece (620) during locking.

9. The folding riser mechanism for a folding cart of claim 8, wherein: the locking block (320) extends downwards to form a protruding block (321), one side of the protruding block (321) is provided with a notch (322), the fixing seat (520) is provided with a slot (521) and a sliding groove (522), the starting piece (620) comprises two supporting rods (621) and a stop lever (622) which are arranged in parallel, two ends of the stop lever (622) are respectively connected to one end of the supporting rod (621), the other end of the supporting rod (621) is in threaded connection with the floating locking block (420), the starting piece (620) is horizontally installed in the sliding groove (522) through the supporting rod (621), the floating locking block (420) comprises a clamping portion (421) and a sliding portion (422), and the sliding portion (422) is slidably connected to the fixing seat (520) through the fixing rod (423).

10. The folding riser mechanism for a folding cart of claim 9, wherein: the improved bolt connecting structure is characterized in that a first built-in groove (106) which is vertically arranged is arranged in the upper connecting pipe (100), a sliding hole (105) is formed in the outer wall of the upper connecting pipe (100), the first built-in groove (106) is communicated with the sliding hole (105), a second built-in groove (201) which is vertically arranged is formed in the lower connecting pipe (200), the first built-in groove (106) and the second built-in groove (201) are vertically aligned, the bolt (720) is inserted into the first built-in groove (106), the sliding block (722) is connected to the bolt (720) through a positioning rod (721), the positioning rod (721) can move up and down in the sliding hole (105), the starting piece (620) is located on one side of the second built-in groove (201), and a fifth elastic piece (723) is installed between the bolt (720) and the upper connecting pipe (100).

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