CN116373978A - Wide folding handcart - Google Patents

Abstract

The invention discloses a wide folding handcart, which comprises a frame main body and a cabin main body; the frame main body comprises a front bracket, a rear bracket and a push handle bracket, wherein the middle section of the front bracket and the middle section of the rear bracket are crossed and can be fixed in a relative rotation manner, the push handle bracket and the front bracket can be connected in a relative rotation manner, the push handle bracket can rotate downwards or upwards relative to the front bracket in the folding process, and the push handle bracket reversely rotates in the unfolding process; the cabin main part includes cabin support and cabin cover, and the front lower extreme of cabin support articulates the front upper end at the back support, and the back upper end of cabin support articulates on pushing away the handle support, and the width of cabin support is greater than the width of frame main part, and cabin cover is fixed to be overlapped on the cabin support. The whole width of the cabin main body is enlarged by arranging the cabin main body on the frame main body; the whole folding length is smaller after folding, and the folding bag is convenient to carry.

Description

A wide-body folding trolley

technical field

The invention relates to the technical field of vehicles, in particular to a wide-body folding trolley.

Background technique

Folding trolleys are very important means of transportation in modern life, including pet folding trolleys, baby and children folding trolleys, etc.

The existing foldable trolleys for pets or babies have the following problems: 1. The unfolded cockpit is located in the frame, which is limited by the width of the frame, and the width of the cockpit is relatively narrow. Only by widening the width of the frame can a larger cockpit be obtained Space; 2. In order to reduce the folded volume of the partially foldable trolley, secondary folding is required during the folding process, which is inconvenient to use, and the secondary folding makes the structure more complicated; 3. Although the partially foldable trolley can be folded once, the folded The volume becomes very small, but the first problem mentioned above will exist. Therefore, people look forward to a folding stroller for infants and children and a folding stroller for pets, which can obtain a larger cabin space without increasing the width of the car body; less folding times, easy to use; small volume after folding, easy to carry.

Contents of the invention

Therefore, the present invention provides a wide-body folding trolley to solve one or more of the above-mentioned technical problems.

In order to achieve the above object, the present invention provides the following technical solutions:

A wide-body folding trolley, comprising a frame main body and a cockpit main body; the vehicle frame main body includes a front bracket, a rear bracket and a push handle bracket, the middle section of the front bracket and the middle section of the rear bracket intersect and are relatively rotatably fixed, The push handle bracket is relatively rotatably connected to the front bracket, during the folding process, the push handle bracket can rotate downward or upward relative to the front bracket, and during the unfolding process, the push handle bracket rotates in the opposite direction; The cockpit main body includes a cockpit bracket and a cockpit cover. The front lower end of the cockpit bracket is hinged on the front upper end of the rear bracket, and the rear upper end of the cockpit bracket is hinged on the push handle bracket. The width of the cockpit bracket is Greater than the width of the vehicle frame main body, the cockpit cover is fixedly fitted on the cockpit bracket.

Further, the frame body also includes a rotation lock assembly, the push handle bracket is connected to the front bracket through the rotation lock assembly, and the rotation lock assembly is used to lock or unlock the fixing of the front bracket and the push handle bracket relationship; the wide-body folding trolley also includes a front combination wheel and a rear combination wheel, the front combination wheel is installed at the front lower end of the front support, and the rear combination wheel is installed at the rear lower end of the rear support; the The front bracket and the rear bracket are hingedly fixed by the first rotating shaft, the cockpit bracket and the rear bracket are hingedly fixed by the second rotating shaft, and the cockpit bracket is hingedly fixed by the push handle bracket.

Further, the rotation locking assembly includes a retractable fixing seat and a retractable sliding sleeve, the retractable fixing seat is fixed on the rear upper section of the front bracket, the retractable fixing seat is provided with a protrusion of the fixing seat, the The protrusion of the fixing seat is located on the rear lower side of the front bracket, the front lower end of the push handle bracket is hinged with the protrusion of the fixing seat, and the retractable sliding sleeve is slidably sleeved on the lower section of the push handle bracket , the retractable sliding sleeve is provided with a sliding sleeve protrusion, the sliding sleeve protrusion is located on the front upper side of the push handle bracket, the sliding sleeve protrusion is provided with an insertion hole, when the front bracket is unfolded, Insert the rear upper end into the jack.

Further, the protrusion of the sliding sleeve is also provided with a finger hole, the axis of the insertion hole is parallel to the push handle bracket, and the axis of the finger hole is perpendicular to the push handle bracket; The fixed seat is sleeved on the front bracket and positioned with the front bracket through the first pin shaft. The retractable sliding sleeve is provided with a second pin shaft. The position of the sleeve is provided with two first waist-shaped holes, and the two first waist-shaped holes are symmetrically distributed on the left and right sides of the push handle bracket, and the middle section of the second pin shaft is passed through the two first waist-shaped holes. In a waist-shaped hole, the front lower end of the push handle bracket is hinged and fixed to the protrusion of the fixing seat through the fourth rotating shaft.

Further, the rotation locking assembly includes a lower gear fixing seat, an upper gear fixing seat, a clutch seat, a limit gear, a sleeve and a clutch pull wire, the lower gear fixing seat is fixed on the rear upper end of the front bracket, and the The upper gear fixing seat is fixed at the front lower end of the push handle bracket, the rear upper part of the lower gear fixing seat is rotatably combined with the front lower part of the upper gear fixing seat one left and one right, and the lower gear is fixed The rear upper part of the seat is provided with a lower gear groove on the side facing the front lower part of the upper gear fixing seat, and the front lower part of the upper gear fixing seat is provided with a clutch installation groove on the side facing the rear upper part of the lower gear fixing seat and the upper gear groove, the clutch installation groove is located on the side of the upper gear groove away from the lower gear groove, the clutch seat is rotatably installed in the clutch installation groove, and the groove of the clutch installation groove The bottom and the contact surface of the clutch seat and the bottom of the groove are provided with inclined surfaces for use in conjunction with each other. The limit gear can be horizontally slidable and engaged in two gear grooves. When the clutch seat rotates at a certain angle, The limit gear will be pushed out of the upper gear groove by the clutch seat so that the limit gear and the upper gear groove are no longer meshed, the sleeve is slidably sleeved outside the push handle bracket, and the clutch pull wire Threaded in the push handle bracket, one end of the clutch cable is connected to the sleeve, and the other end is fixed to the peripheral side of the clutch seat. When the sleeve slides upward, the clutch cable pulls the The clutch seat is used to rotate the clutch seat, and then the clutch seat pushes the limiting gear out of the upper gear groove.

Further, the rotation locking assembly also includes a fifth rotating shaft and a return spring, the fifth rotating shaft is arranged transversely and is located behind and below the axis of the front bracket, the rear upper part of the lower gear fixing seat is connected to the upper gear fixing seat The front lower part of the shaft is hinged and fixed by the fifth rotating shaft, and the clutch seat, limit gear and return spring are all movably sleeved on the fifth rotating shaft, and the return spring is located between the lower gear groove and the limit between the gears; the lower front part of the lower gear fixing seat is sleeved on the rear upper end of the front bracket and positioned by the third pin shaft, and the rear upper part of the upper gear fixing base is sleeved on the front of the push handle bracket The lower end is positioned by the fourth pin shaft, the sleeve is pierced with the fifth pin shaft, and the position corresponding to the sleeve tube of the push handle bracket is provided with two second waist-shaped holes, two second waist-shaped holes The holes are distributed symmetrically on the left and right sides of the push handle bracket, the middle section of the fifth pin shaft is passed through the two second waist-shaped holes, and one end of the clutch pull wire passes through the ring and the fifth pin. The shaft is connected, and the other end is clamped in the clamping groove on the peripheral side of the clutch seat through the chuck.

Further, the rotation locking assembly includes a retractable fixing seat and a retractable sliding sleeve, the retractable fixing seat is fixed on the rear upper section of the front bracket, the retractable fixing seat is provided with a protrusion of the fixing seat, the The protrusion of the fixing seat is located on the front upper side of the front bracket, the front lower end of the push handle bracket is hinged with the protrusion of the fixing seat, and the retractable sliding sleeve is slidably sleeved on the lower section of the push handle bracket , the retractable sliding sleeve is provided with a sliding sleeve protrusion, the sliding sleeve protrusion is located on the rear lower side of the push handle bracket, the sliding sleeve protrusion is provided with an insertion hole, when the front bracket is unfolded, The rear upper end of the frame is inserted into the jack; the frame body also includes a hinged rod seat, one end of the hinged rod seat is hinged to the rear upper end of the cabin bracket, and the other end is fixed to the push handle bracket.

Further, the protrusion of the sliding sleeve is also provided with a finger hole, the axis of the insertion hole is parallel to the push handle bracket, and the axis of the finger hole is perpendicular to the push handle bracket; The fixed seat is sleeved on the front bracket and positioned with the front bracket through the first pin shaft. The retractable sliding sleeve is provided with a second pin shaft. The position of the sleeve is provided with two first waist-shaped holes, and the two first waist-shaped holes are symmetrically distributed on the left and right sides of the push handle bracket, and the middle section of the second pin shaft is passed through the two first waist-shaped holes. In a waist-shaped hole, the front lower end of the push handle bracket and the protrusion of the fixed seat are hinged and fixed through the fourth rotating shaft; one end of the hinged rod seat is hinged with the rear upper end of the cabin bracket through the third rotating shaft, and the other One end is sleeved on the push handle bracket and positioned through the sixth pin shaft.

Further, the rotation locking assembly includes a lower gear fixing seat, an upper gear fixing seat, a clutch seat, a limit gear, a sleeve and a clutch pull wire, the lower gear fixing seat is fixed on the rear upper end of the front bracket, and the The upper gear fixing seat is fixed at the front lower end of the push handle bracket, the rear upper part of the lower gear fixing seat is rotatably combined with the front lower part of the upper gear fixing seat one left and one right, and the lower gear is fixed The rear upper part of the seat is provided with a lower gear groove on the side facing the front lower part of the upper gear fixing seat, and the front lower part of the upper gear fixing seat is provided with a clutch installation groove on the side facing the rear upper part of the lower gear fixing seat and the upper gear groove, the clutch installation groove is located on the side of the upper gear groove away from the lower gear groove, the clutch seat is rotatably installed in the clutch installation groove, and the groove of the clutch installation groove The bottom and the contact surface of the clutch seat and the bottom of the groove are provided with inclined surfaces for use in conjunction with each other. The limit gear can be horizontally slidable and engaged in two gear grooves. When the clutch seat rotates at a certain angle, The limit gear will be pushed out of the upper gear groove by the clutch seat so that the limit gear and the upper gear groove are no longer meshed, the sleeve is slidably sleeved outside the push handle bracket, and the clutch pull wire Threaded in the push handle bracket, one end of the clutch cable is connected to the sleeve, and the other end is fixed to the peripheral side of the clutch seat. When the sleeve slides upward, the clutch cable pulls the The clutch seat is used to rotate the clutch seat, so that the clutch seat pushes the limit gear out of the upper gear slot; the frame body also includes a hinged rod seat, one end of which is connected to the cockpit The rear upper end of the support is hinged, and the other end is fixed with the push handle support.

Further, the rotation locking assembly also includes a fifth rotating shaft and a return spring, the fifth rotating shaft is arranged transversely and is located behind and below the axis of the front bracket, the rear upper part of the lower gear fixing seat is connected to the upper gear fixing seat The front lower part of the shaft is hinged and fixed by the fifth rotating shaft, and the clutch seat, limit gear and return spring are all movably sleeved on the fifth rotating shaft, and the return spring is located between the lower gear groove and the limit between the gears; the lower front part of the lower gear fixing seat is sleeved on the rear upper end of the front bracket and positioned by the third pin shaft, and the rear upper part of the upper gear fixing base is sleeved on the front of the push handle bracket The lower end is positioned by the fourth pin shaft, the sleeve is pierced with the fifth pin shaft, and the position corresponding to the sleeve tube of the push handle bracket is provided with two second waist-shaped holes, two second waist-shaped holes The holes are distributed symmetrically on the left and right sides of the push handle bracket, the middle section of the fifth pin shaft is passed through the two second waist-shaped holes, and one end of the clutch pull wire passes through the ring and the fifth pin. shaft connection, the other end is clamped in the card slot on the peripheral side of the clutch seat through a chuck; one end of the hinged rod seat is hinged with the rear upper end of the cabin bracket through a third rotating shaft, and the other end is sleeved on the The push handle bracket is positioned through the sixth pin shaft.

The present invention has the following advantages:

Compared with the existing baby or pet folding trolley, the wide-body folding trolley provided by the present invention can make the cabin bracket wider than The width of the main body of the vehicle frame makes the overall width of the main body of the cockpit larger in this way, and after unfolding, a larger space of the cockpit can be obtained.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that are required in the description of the embodiments or the prior art. Apparently, the drawings in the following description are only exemplary, and those skilled in the art can also obtain other implementation drawings according to the provided drawings without creative work.

The structures, proportions, sizes, etc. shown in this manual are only used to cooperate with the content disclosed in the manual, so that people familiar with this technology can understand and read, and are not used to limit the conditions for the implementation of the present invention, so there is no technical In the substantive meaning above, any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of the technical content disclosed in the present invention without affecting the effect and purpose of the present invention. within the range that can be covered.

Fig. 1 is a schematic structural view of a kind of wide-body folding trolley in the unfolded state provided in embodiment 1;

Fig. 2 is the exploded view of the wide body folding trolley that embodiment 1 provides;

Fig. 3 is the exploded view of the sliding locking assembly of the wide-body folding trolley provided in embodiment 1;

Fig. 4 is a structural schematic diagram at a certain moment during the folding process or unfolding process of the wide-body folding trolley provided by Embodiment 1 (the cabin cover is omitted);

Fig. 5 is a structural schematic view of the folded wide-body folding trolley provided in Embodiment 1 (cockpit cover is omitted);

Fig. 6 is a schematic structural view of another wide-body folding trolley in an unfolded state provided in Embodiment 2;

Figure 7 is an exploded view of the wide-body folding trolley provided by Embodiment 2 (cockpit cover is omitted);

Fig. 8 is an exploded view of the sliding locking assembly of the wide-body folding trolley provided in Embodiment 2;

Fig. 9 is a structural schematic diagram at a certain moment during the folding process or unfolding process of the wide-body folding trolley provided by Embodiment 2 (the cockpit cover is omitted);

Figure 10 is a schematic structural view of the folded wide-body folding trolley provided in Embodiment 2 (cockpit cover omitted);

Fig. 11 is a schematic structural view of the third wide-body folding trolley in the unfolded state provided in Embodiment 3;

Figure 12 is a partial exploded view of the wide-body folding trolley provided by Embodiment 3;

Fig. 13 is an exploded view of the sliding lock assembly of the wide-body folding trolley provided in Embodiment 3;

Fig. 14 is a structural schematic diagram at a certain moment during the folding process or unfolding process of the wide-body folding trolley provided by Embodiment 3;

Fig. 15 is a schematic structural view of the wide-body folding trolley in the folded state provided by Embodiment 3;

Fig. 16 is a schematic structural view of the fourth wide-body folding trolley in the unfolded state provided in Embodiment 4;

Figure 17 is a partial exploded view of the wide-body folding trolley provided by Embodiment 4;

Fig. 18 is an exploded view of the sliding locking assembly of the wide-body folding trolley provided in Embodiment 4;

Fig. 19 is a structural schematic diagram at a certain moment during the folding process or unfolding process of the wide-body folding trolley provided by Embodiment 4;

Fig. 20 is a perspective view of the wide-body folding trolley provided in Embodiment 4 in a folded state.

In the figure: 1-front bracket, 2-rear bracket, 3-front combination wheel, 4-rear combination wheel, 5-push handle bracket, 6-cockpit bracket, 7-cockpit cover, 8-first shaft, 9-the first Two rotating shafts, 10-third rotating shaft, 11-folding fixed seat, 12-folding sliding sleeve, 13-first pin shaft, 14-fourth rotating shaft, 15-second pin shaft, 16-first waist-shaped hole , 17-jack, 18-finger hole, 19-lower gear holder, 20-upper gear holder, 21-clutch seat, 22-limiting gear, 23-sleeve, 24-clutch cable, 25-return spring , 26-third pin, 27-fourth pin, 28-fifth shaft, 29-fifth pin, 30-second waist hole, 31-ring, 32-chuck, 33-card slot , 34-lower gear groove, 35-slope, 36-hinged rod seat, 37-sixth pin shaft.

Detailed ways

The implementation mode of the present invention is illustrated by specific specific examples below, and those who are familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this description. Obviously, the described embodiments are a part of the present invention. , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Terms such as "upper", "lower", "left", "right", and "middle" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the present invention. The change or adjustment of the relative relationship shall also be regarded as the implementable scope of the present invention without substantive change of the technical content.

Example 1

As shown in Figures 1 to 5, Embodiment 1 provides a wide-body folding trolley, including a frame body and a cabin body. The vehicle frame main body includes a front bracket 1, a rear bracket 2, a front combination wheel 3, a rear combination wheel 4, a push handle bracket 5, and a rotation locking assembly. The cockpit main body comprises a cockpit bracket 6 and a cockpit cover 7.

The middle section of the front bracket 1 and the middle section of the rear bracket 2 intersect. Viewed from the side, the front bracket 1 and the rear bracket 2 intersect in an X shape. Front combination wheel 3 is installed on the front lower end of front support 1, and rear combination wheel 4 is installed on the rear lower end of rear support 2. Connection relation, shape, structure of front support 1, rear support 2, front combination wheel 3 and rear combination wheel 4 all can adopt existing design, but present embodiment does not limit the use of new design.

The front lower end of the push handle bracket 5 is relatively rotatably connected with the rear upper end of the front bracket 1 , usually through a rotation locking assembly, and the rotation center is a transverse virtual axis. During the folding process, the push handle bracket 5 can be rotated downward relative to the front bracket 1, and during the unfolding process, the push handle bracket 5 can be rotated upward relative to the front bracket 1, so as to ensure that the combined wheels of the folded trolley are close to each other. Reduced folded length.

The front lower end of the cabin support 6 (hinged seat is provided here) is hinged on the front upper end of the rear support 2 by the second rotating shaft 9, and the rear upper end of the cabin support 6 (hinged seat is provided here) is hinged on the pusher by the third rotating shaft 10. Put bracket 5 on. Because the cockpit support 6 is located on the main body of the vehicle frame, it is possible to widen the width of the cockpit support 6 . On, cockpit cover 7 adopts soft material, such as cloth, net etc.

The above contents are all descriptions for one side. In fact, the first rotating shaft 8 , the second rotating shaft 9 , the third rotating shaft 10 , and the rotation locking components are all arranged symmetrically on the left and right sides.

In this embodiment, the rotation locking assembly includes a retractable fixing seat 11 and a retractable sliding sleeve 12 . The folding fixing seat 11 is sleeved on the rear upper section of the front bracket 1 and is positioned with the front bracket 1 through the first pin shaft 13; The part is located at the rear lower side of the front support 1, and the front lower end of the push handle support 5 and the protrusion of the holder are hinged and fixed by the fourth rotating shaft 14. The retractable sliding sleeve 12 is slidably sleeved on the lower section of the push handle bracket 5, and the retractable sliding sleeve 12 is provided with a second pin shaft 15, and two pin shafts 15 are provided on the position of the push handle bracket 5 corresponding to the retractable sliding sleeve 12. The first waist-shaped holes 16, two first waist-shaped holes 16 are symmetrically distributed on the left and right sides of the push handle bracket 5, and the middle section of the second pin shaft 15 is penetrated in the two first waist-shaped holes 16; the sliding sleeve is folded 12 is provided with a sliding sleeve protrusion, the sliding sleeve protrusion is located on the front upper side of the push handle bracket 5, and the sliding sleeve protrusion is provided with an jack 17 and a finger hole 18 (insert fingers into it to facilitate the control of sliding of the sliding sleeve 12) , the jack 17 is closer to the front lower end of the push handle bracket 5 relative to the finger hole 18 (that is, when the trolley is unfolded, the jack 17 is located at the front lower side of the finger hole 18). The axis of the jack 17 is parallel to the push handle bracket 5, and the finger hole 18 The axis of the push handle bracket 5 is perpendicular to the different planes. When the trolley is unfolded, the rear upper end of the front bracket 1 can be inserted into the jack 17 (during the deployment process, first make the push handle bracket 5 parallel to the front bracket 1, so that the front bracket The rear upper end of 1 is on the same axis as the jack 17, and then the sliding sleeve 12 is pushed forward and downward, and the rear upper end of the front bracket 1 is inserted into the jack 17 to a certain depth to complete the unfolded locking. At this time, push the Both the support 5 and the rear support 2 can not rotate relative to the front support 1).

Compared with the existing baby or pet folding trolley, the wide-body folding trolley provided by the present invention can make the width of the cockpit bracket 6 wider by arranging the cabin main body on the vehicle frame main body without changing the width of the main body of the vehicle frame. It is larger than the width of the main body of the frame, so that the overall width of the main body of the cockpit becomes larger, and after unfolding, a larger cockpit space can be obtained; the "front bracket 1 and rear bracket 2 are relatively rotated" + "the front and rear ends of the cockpit bracket 6 Respectively hinged on the rear bracket 2 and the push handle bracket 5" technical solution, not only simple in structure, saving resources, reducing waste, but also can complete the folding process in one fold, which is convenient to use; moreover, the specially designed folding locking component makes the push The bracket 5 can only be rotated downwards relative to its hinge with the front bracket 1, so that the lower ends of the folded front bracket 1 and the rear bracket 2 are closer to each other than the lower ends of the folded front bracket 1 and the rear bracket 2. "far away" folding form (in this folding form, the length after folding is the distance between the lower end of the front support 1 and the lower end of the rear support 2, since the lower ends of the front support 1 and the rear support 2 are far away, the overall folded length is relatively large ), the folded length is smaller and easier to carry.

Example 2

As shown in Figures 6 to 10, embodiment 2 provides another kind of wide-body folding trolley, and its structure has many similarities with the structure of the wide-body folding trolley provided in embodiment 1, such as front support 1, rear support 2, The shape, structure and connection relationship of parts such as the front combined wheel 3, the rear combined wheel 4, the push handle bracket 5, the cockpit bracket 6 and the cockpit cover 7, etc., are not repeated in this embodiment; the differences The reason is that another rotation locking assembly different from the rotation locking assembly in Embodiment 1 is adopted.

In this embodiment, the rotation locking assembly includes a lower gear fixing seat 19 , an upper gear fixing seat 20 , a clutch seat 21 , a limiting gear 22 , a sleeve 23 , a clutch pull wire 24 and a return spring 25 . The front lower part of the lower gear holder 19 is sleeved on the rear upper end of the front bracket 1 and positioned by the third pin shaft 26, and the rear upper part of the upper gear holder 20 is sleeved on the front lower end of the push handle bracket 5 and passed through the fourth pin shaft. 27 positioning, the rear upper part of the lower gear fixing seat 19 and the front lower part of the upper gear fixing seat 20 are distributed from left to right and are rotatably combined through the fifth rotating shaft 28, which is arranged transversely and is located at the front bracket 1. The rear and lower part of the axis ensures that the push handle bracket 5 can rotate downward relative to the front bracket 1 during the folding process. The rear upper part of the following gear holder 19 is on the right, and the front lower part of the upper gear holder 20 is on the left as an example. A clutch installation groove (not shown in the figure) and an upper gear groove (not shown in the figure) are provided, and the clutch installation groove is located on the left side of the upper gear groove. The clutch seat 21 , the limiting gear 22 and the return spring 25 are all movably sleeved on the fifth rotating shaft 28 . Clutch seat 21 is rotatably installed in the clutch installation groove, the groove bottom (right side) of clutch installation groove and the left side of clutch seat 21 are all provided with the inclined plane 35 that cooperates to use, and limit gear 22 can laterally slide The meshing is installed in the two gear grooves. When the clutch seat 21 rotates at a certain angle, the limit gear 22 will be pushed out of the upper gear groove by the clutch seat 21 so that the limit gear 22 is no longer meshed with the upper gear groove. The working principle is the same as that of the existing clutch The working principle is the same, so I won't repeat them here. The sleeve 23 is slidably sleeved outside the push handle bracket 5, the sleeve 23 is pierced with a fifth pin shaft 29, and the position corresponding to the sleeve 23 of the push handle bracket 5 is provided with two second waist-shaped holes 30. Two second waist-shaped holes 30 are symmetrically distributed on the left and right sides of the push handle bracket 5 , and the middle section of the fifth pin shaft 29 passes through the two second waist-shaped holes 30 . The clutch pull wire 24 is threaded in the push handle bracket 5 , and one end of the clutch pull wire 24 is connected to the fifth pin 29 through a ring 31 , and the other end is snapped into a slot 33 on the peripheral side of the clutch seat 21 through a clip 32 . When the sleeve 23 slides upwards, the clutch pull wire 24 pulls the clutch seat 21 to rotate the clutch seat 21, and then the clutch seat 21 pushes the limit gear 22 out of the upper gear groove. The return spring 25 adopts a compression spring, and is installed between the lower gear slot 34 and the limiting gear 22 in a pre-compressed manner. After loosening sleeve pipe 23, under the effect of back-moving spring 25, limit gear 22 enters in the upper gear groove again, and limit gear 22 meshes with upper gear groove and lower gear groove 34 to complete locking; Under the action of the groove bottom (right side) of the groove and the slope on the left side of the clutch seat 21, the clutch seat 21 reversely rotates (when the casing 23 is artificially lifted up, the rotation of the clutch seat 21 is positive) reset, and the sleeve Pipe 23 also slides down and resets.

Optionally, among the many teeth of the limiting gear 22, at least one tooth is enlarged, and the corresponding tooth groove in the lower gear groove 34 is also enlarged, and the upper gear groove has double the number of increased teeth. Large alveolar. Take the limiting gear 22 as an example with an enlarged tooth, there is also an enlarged tooth groove in the upper gear groove, and there are two enlarged tooth grooves in the lower gear groove 34, which correspond to the unfolded position and the folded position respectively. During the unfolding or folding process, there is no need to forcefully pull the sleeve 23 all the time, which is more convenient to use.

The wide-body folding trolley provided in Embodiment 2 has all the advantages of the wide-body folding trolley in Embodiment 1, and will not be repeated here.

Example 3

As shown in Figures 11 to 15, Embodiment 3 provides a third wide-body folding trolley, whose structure is basically the same as that of the wide-body folding trolley provided in Embodiment 1, except that the wide-body folding trolley of Embodiment 1 The trolley is folded downwards, and the wide-body folding trolley of this embodiment is folded upwards.

In this embodiment, the folding fixing seat 11 is fixed on the rear upper section of the front bracket 1, the folding fixing seat 11 is provided with a protrusion of the fixing seat, the front lower end of the push handle bracket 5 is hinged with the protrusion of the fixing seat, and the sliding sleeve 12 is slidably sleeved on the lower part of the push handle bracket 5, and the retractable sliding sleeve 12 is provided with a sliding sleeve protrusion, and the sliding sleeve protrusion is provided with a jack 17, and when the unfolded state, the rear upper end of the front bracket 1 is inserted into the jack In 17, this is the same structure as that of Embodiment 1, and the rest of the structures that are the same as Embodiment 1 will not be repeated (refer to the content of Embodiment 1). The difference is that the protrusion of the fixed seat is located on the front upper side of the front bracket 1, and the protrusion of the sliding sleeve is located on the rear lower side of the push handle bracket 5; The vehicle frame body also includes a hinged rod seat 36, one end of which is hinged to the rear upper end of the cockpit bracket 6, and the other end is fixed to the push handle bracket 5; more specifically, one end of the hinged rod seat 36 is connected to The rear upper end of the cockpit bracket 6 is hinged, and the other end is sleeved on the push handle bracket 5 and positioned by the sixth pin shaft 37 . Compared with the wide-body folding trolley of Embodiment 1, the rotation locking assembly of this embodiment is closer to the upper rear, that is, the front bracket 1 of this embodiment is longer, and the push handle bracket 5 is relatively shorter.

The wide-body folding trolley provided in embodiment 3 has all the advantages of the wide-body folding trolley in embodiment 1, for example, the overall width of the cockpit main body becomes larger, and after unfolding, a larger cockpit space can be obtained; The folding direction of 1 is designed in the opposite direction, so that the push handle bracket can be folded over the cockpit bracket, so as to avoid the push handle bracket protruding out of the rectangular frame formed by the four sets of wheels (when viewed from above), and the length after the entire fold is also Smaller than the prior art, more portable.

Example 4

As shown in Figures 16 to 20, Embodiment 4 provides a fourth wide-body folding trolley, whose structure is basically the same as that of the wide-body folding trolley provided in Embodiment 2, except that the wide-body folding cart of Embodiment 2 The trolley is folded downwards, and the wide-body folding trolley of this embodiment is folded upwards.

In this embodiment, the same rotation locking assembly as that in Embodiment 2 is used, so the relevant structure will not be described in detail (refer to the content of Embodiment 2). The difference is that, compared with the wide-body folding trolley in Embodiment 1, the rotation locking assembly of this embodiment is closer to the upper rear, that is, the front bracket 1 of this embodiment is longer, and the push handle bracket 5 is relatively shorter; and , in order to ensure that when folding upwards, the push handle bracket 5 can be turned over the top of the cabin bracket 6, the frame body also includes a hinged rod seat 36, one end of the hinged rod seat 36 is hinged with the rear upper end of the cabin bracket 6, and the other end is connected with the push handle The bracket 5 is fixed; more specifically, one end of the hinged rod seat 36 is hinged with the rear upper end of the cabin bracket 6 through the third rotating shaft 10, and the other end is sleeved on the push handle bracket 5 and positioned through the sixth pin shaft 37.

The wide-body folding trolley provided in Embodiment 4 has all the advantages of the wide-body folding trolley in Embodiment 3, and will not be repeated here.

Although the present invention has been described in detail with general descriptions and specific examples above, it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present invention. Therefore, the modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the protection scope of the present invention.

Claims (10)

1. a kind of wide-body folding trolley is characterized in that, comprises vehicle frame main body and cockpit main body; Described vehicle frame main body comprises front support, rear support and push handle support, and the middle section of described front support and the middle section of rear support intersect and The push handle bracket is relatively rotatably connected to the front bracket. During the folding process, the push handle bracket can rotate downward or upward relative to the front bracket. During the unfolding process, the push handle bracket Rotate the bracket in reverse; the cockpit main body includes a cockpit bracket and a cockpit cover, the front lower end of the cockpit bracket is hinged on the front upper end of the rear bracket, and the rear upper end of the cockpit bracket is hinged on the push handle bracket, The width of the cockpit bracket is greater than that of the vehicle frame main body, and the cockpit cover is fixedly set on the cockpit bracket. 2. The wide-body folding trolley according to claim 1, wherein the frame body further includes a rotation locking assembly, the push handle bracket is connected to the front bracket through the rotation locking assembly, and the rotation The locking assembly is used to lock or unlock the fixed relationship between the front bracket and the push handle bracket; the wide-body folding trolley also includes a front combined wheel and a rear combined wheel, and the front combined wheel is installed on the front lower end of the front bracket, the The rear combination wheel is installed on the rear lower end of the rear bracket; the front bracket and the rear bracket are hinged and fixed by the first rotating shaft, the cabin bracket and the rear bracket are hinged and fixed by the second rotating shaft, and the cabin bracket and the The push handle bracket is hingedly fixed. 3. The wide-body folding trolley according to claim 2, wherein the rotation locking assembly includes a retractable fixing seat and a retractable sliding sleeve, and the retractable fixing seat is fixed on the rear upper section of the front bracket, The folding fixing seat is provided with a fixing seat protrusion, the fixing seat protrusion is located at the rear lower side of the front bracket, the front lower end of the push handle bracket is hinged with the fixing seat protrusion, and the folding The sliding sleeve is slidably set on the lower section of the push handle bracket, the retractable sliding sleeve is provided with a sliding sleeve protrusion, and the sliding sleeve protrusion is located on the front upper side of the push handle bracket, and the sliding sleeve The protruding part is provided with an insertion hole, and the rear upper end of the front bracket is inserted into the insertion hole in the unfolded state. 4. The wide-body folding trolley according to claim 3, characterized in that, the protrusion of the sliding sleeve is also provided with a finger hole, the axis of the insertion hole is parallel to the push handle bracket, and the axis of the finger hole is It is perpendicular to the different plane of the push handle bracket; the retractable fixing seat is sleeved on the front bracket and positioned with the front bracket through the first pin shaft, and the retractable sliding sleeve is provided with a second pin Shaft, two first waist-shaped holes are arranged at the position corresponding to the retractable sliding sleeve of the push handle bracket, and the two first waist-shaped holes are symmetrically distributed on the left and right sides of the push handle bracket, so The middle section of the second pin shaft is passed through the two first waist-shaped holes, and the front lower end of the push handle bracket and the protrusion of the fixing seat are hinged and fixed by the fourth rotating shaft. 5. The wide-body folding trolley according to claim 2, wherein the rotation locking assembly comprises a lower gear fixing seat, an upper gear fixing seat, a clutch seat, a limit gear, a sleeve and a clutch pull wire, and the lower gear The gear fixing seat is fixed on the rear upper end of the front bracket, the upper gear fixing seat is fixed on the front lower end of the push handle bracket, and the rear upper part of the lower gear fixing seat is aligned with the front lower part of the upper gear fixing seat. The left and the right are rotatably combined, and the rear upper part of the lower gear fixing seat is provided with a lower gear groove on the side facing the front lower part of the upper gear fixing seat, and the front lower part of the upper gear fixing seat is facing the One side of the rear upper part of the lower gear fixing seat is provided with a clutch mounting groove and an upper gear groove, and the clutch mounting groove is located on a side of the upper gear groove far away from the lower gear groove, and the clutch seat is rotatably installed In the clutch installation groove, the groove bottom of the clutch installation groove and the contact surface of the clutch seat and the groove bottom are all provided with inclined surfaces for matching use, and the limit gear can be horizontally slidable and meshed and installed on both sides. In the first gear groove, when the clutch seat rotates at a certain angle, the limit gear will be pushed out of the upper gear groove by the clutch seat so that the limit gear and the upper gear groove are no longer meshed, and the sleeve can slide The ground is sleeved outside the push handle bracket, the clutch pull wire is passed through the push handle bracket, one end of the clutch pull wire is connected to the sleeve, and the other end is fixed to the peripheral side of the clutch seat, When the sleeve slides upwards, the clutch pull wire pulls the clutch seat to rotate the clutch seat, so that the clutch seat pushes the limiting gear out of the upper gear groove. 6. The wide-body folding trolley according to claim 5, wherein the rotation locking assembly further comprises a fifth rotating shaft and a return spring, the fifth rotating shaft is arranged transversely and is located behind and below the axis of the front bracket , the rear upper part of the lower gear holder and the front lower part of the upper gear holder are hinged and fixed through the fifth rotating shaft, and the clutch seat, the limit gear and the return spring are all movably sleeved on the fifth rotating shaft, The return spring is located between the lower gear slot and the limit gear; the lower front part of the lower gear holder is sleeved on the rear upper end of the front bracket and positioned by the third pin shaft, and the upper gear The rear upper part of the fixed seat is sleeved on the front lower end of the push handle bracket and is positioned by the fourth pin shaft. There are two second waist-shaped holes, and the two second waist-shaped holes are symmetrically distributed on the left and right sides of the push handle bracket, and the middle section of the fifth pin shaft is passed through the two second waist-shaped holes. One end of the clutch pull wire is connected to the fifth pin shaft through a ring, and the other end is snapped into a slot on the peripheral side of the clutch seat through a chuck. 7. The wide-body folding trolley according to claim 2, wherein the rotation locking assembly includes a retractable fixing seat and a retractable sliding sleeve, and the retractable fixing seat is fixed on the rear upper section of the front bracket, The folding fixing seat is provided with a fixing seat protrusion, the fixing seat protrusion is located on the front upper side of the front bracket, the front lower end of the push handle bracket is hinged with the fixing seat protrusion, and the folding The sliding sleeve is slidably set on the lower section of the push handle bracket, and the retractable sliding sleeve is provided with a sliding sleeve protrusion, and the sliding sleeve protrusion is located on the rear lower side of the push handle bracket, and the sliding sleeve The protruding portion is provided with a jack, and when in the expanded state, the rear upper end of the front bracket is inserted into the jack; the frame body also includes a hinged rod seat, one end of the hinged rod seat is connected to the cockpit bracket The rear upper end is hinged, and the other end is fixed with the push handle bracket. 8. The wide-body folding trolley according to claim 7, characterized in that, the protrusion of the sliding sleeve is also provided with a finger hole, the axis of the insertion hole is parallel to the push handle bracket, and the axis of the finger hole is It is perpendicular to the different plane of the push handle bracket; the retractable fixing seat is sleeved on the front bracket and positioned with the front bracket through the first pin shaft, and the retractable sliding sleeve is provided with a second pin Shaft, two first waist-shaped holes are arranged at the position corresponding to the retractable sliding sleeve of the push handle bracket, and the two first waist-shaped holes are symmetrically distributed on the left and right sides of the push handle bracket, so The middle section of the second pin shaft is passed through the two first waist-shaped holes, the front lower end of the push handle bracket and the protrusion of the fixing seat are hinged and fixed by the fourth rotating shaft; one end of the hinged rod seat The third rotating shaft is hinged with the rear upper end of the cockpit bracket, and the other end is sleeved on the push handle bracket and positioned through the sixth pin shaft. 9. The wide-body folding trolley according to claim 2, wherein the rotation locking assembly comprises a lower gear fixing seat, an upper gear fixing seat, a clutch seat, a limit gear, a sleeve and a clutch pull wire, the lower The gear fixing seat is fixed on the rear upper end of the front bracket, the upper gear fixing seat is fixed on the front lower end of the push handle bracket, and the rear upper part of the lower gear fixing seat is aligned with the front lower part of the upper gear fixing seat. The left and the right are rotatably combined, and the rear upper part of the lower gear fixing seat is provided with a lower gear groove on the side facing the front lower part of the upper gear fixing seat, and the front lower part of the upper gear fixing seat is facing the One side of the rear upper part of the lower gear fixing seat is provided with a clutch mounting groove and an upper gear groove, and the clutch mounting groove is located on a side of the upper gear groove far away from the lower gear groove, and the clutch seat is rotatably installed In the clutch installation groove, the groove bottom of the clutch installation groove and the contact surface of the clutch seat and the groove bottom are all provided with inclined surfaces for matching use, and the limit gear can be horizontally slidable and meshed and installed on both sides. In the first gear groove, when the clutch seat rotates at a certain angle, the limit gear will be pushed out of the upper gear groove by the clutch seat so that the limit gear and the upper gear groove are no longer meshed, and the sleeve can slide The ground is sleeved outside the push handle bracket, the clutch pull wire is passed through the push handle bracket, one end of the clutch pull wire is connected to the sleeve, and the other end is fixed to the peripheral side of the clutch seat, When the sleeve slides upwards, the clutch cable pulls the clutch seat to rotate the clutch seat, and then the clutch seat pushes the limit gear out of the upper gear groove; the frame body also includes A hinged rod seat, one end of the hinged rod seat is hinged to the rear upper end of the cockpit bracket, and the other end is fixed to the push handle bracket. 10. The wide-body folding trolley according to claim 9, wherein the rotation locking assembly further comprises a fifth rotating shaft and a return spring, and the fifth rotating shaft is arranged transversely and is located behind and below the axis of the front bracket , the rear upper part of the lower gear holder and the front lower part of the upper gear holder are hinged and fixed through the fifth rotating shaft, and the clutch seat, the limit gear and the return spring are all movably sleeved on the fifth rotating shaft, The return spring is located between the lower gear slot and the limit gear; the lower front part of the lower gear holder is sleeved on the rear upper end of the front bracket and positioned by the third pin shaft, and the upper gear The rear upper part of the fixed seat is sleeved on the front lower end of the push handle bracket and is positioned by the fourth pin shaft. There are two second waist-shaped holes, and the two second waist-shaped holes are symmetrically distributed on the left and right sides of the push handle bracket, and the middle section of the fifth pin shaft is passed through the two second waist-shaped holes. One end of the clutch pull wire is connected to the fifth pin shaft through a ring, and the other end is clamped in a slot on the peripheral side of the clutch seat through a chuck; one end of the hinged rod seat is connected to The rear upper end of the cockpit bracket is hinged, and the other end is sleeved on the push handle bracket and positioned by the sixth pin shaft.

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