CN102390419B - Fully folding handcart - Google Patents

Abstract

The invention discloses a fully-foldable trolley, which comprises a front wheel set, a rear wheel set, a wheel set connecting rod, a T-shaped diagonal rod and a hand push rod, wherein the front end of the wheel set connecting rod is connected with the front wheel set, the rear wheel set is provided with a rear wheel shaft, the rear wheel shaft is provided with an installation seat, the installation seat is provided with a connecting rod connecting groove, and the rear end of the wheel set connecting rod is inserted into the connecting rod connecting groove of the installation seat, and the fully-foldable trolley is characterized in that: the T-shaped inclined rod and the hand push rod can be collected and folded; this kind of handcart only through the collection folding mechanism who sets up T type down tube and handspike, can realize full folding effect, moreover, during folding operation, the accessible is pedal twice gently and once is pulled up the handspike lower extreme, can realize, and the operation of opening of handcart, only need open the support body can open automatically, very simple and easy, swift, simple structure, reasonable moreover, the part of involving is very little, but reduce cost is favorable to the using widely of product.

Description

Fully Foldable Trolley

technical field

The invention relates to the technical field of trolleys, in particular to a fully foldable trolley which can be conveniently carried and stored.

Background technique

Existing trolleys, such as: baby trolleys, golf carts, etc., are designed to be foldable for easy carrying and storage; such as Chinese invention patent number: 201120076462.3, named: baby trolley folding mechanism, this type The folding mechanism of the baby stroller mainly has a folding sliding seat, which is hollow inside and fixed to the frameworks on both sides of the stroller. It has an assembly seat, which is embedded in the folding sliding seat, and is used for inserting a locking plate and a folding control button, wherein the middle of the locking plate is pivotally connected, the front end has a locking hook, and the other rear end is connected to a The return spring is connected to the retracting control button with another return spring. When the retracting control button is released, the return spring connected to it can drive the retracting control button to reset. It has a fastening seat, which is fixed on the top of the central tube of the baby trolley frame. The top of the central tube passes through the hollow inner side of the retractable sliding seat, and then is consolidated with the fastening seat. The fastening seat corresponds to the fastening plate The snap hook position has a snap hole. Using these settings, the effect of opening, positioning and closing the baby stroller can be achieved.

Yet; The trolley folding mechanism of above-mentioned structure still has the following deficiencies: (1) it involves many accessories and extremely complex structure, therefore, the manufacturing cost of the product is caused to be higher, which is unfavorable for the popularization and use of the product; (2) When the trolley is opened, positioned and folded, it is limited by its multiple engaging position structures, which makes the operation complicated and inconvenient, and it is difficult to achieve a real full folding structure.

Contents of the invention

The object of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a handcart with simple and reasonable structure, simple and fast folding and unfolding operations, and can truly achieve a fully folded structure.

The purpose of the present invention is achieved like this:

Fully foldable trolley, including front wheel set, rear wheel set, wheel set connecting rod, T-shaped oblique bar and hand push rod. There is a mounting seat on the top, and a connecting rod connecting groove is opened on the mounting seat, and the rear end of the wheel group connecting rod is inserted into the connecting rod connecting groove of the mounting seat. The characteristics are:

The mounting seat of the rear wheel axle is also respectively provided with a connecting groove for the inclined rod and a pedal groove, the lower end of the T-shaped inclined rod is inserted into the connecting groove for the inclined rod, and a spring and its pedal for the inclined rod are placed in the pedal groove. The rod pedal is placed on the upper part of the spring and exposed outside the pedal groove. There is a positioning groove at the lower end of the T-shaped inclined rod. One end of the inclined rod pedal is clamped in the positioning groove of the T-shaped inclined rod. The movable bracket is equipped with a bracket seat on the connecting rod of the wheel group. The bracket pedal and its spring, the bracket pedal and the bottom end of the movable bracket, so that by stepping on the tilt rod pedal, one end of the tilt rod pedal inserted into the positioning groove will be separated, so that the lower end of the T-shaped tilt rod is not limited. When stepping on the bracket pedal, make the T-shaped diagonal bar with the movable bracket clockwise close to the connecting rod of the wheel set, and fold the T-shaped diagonal bar;

The lower end of the push rod is installed on the upper part of the movable bracket of the T-shaped oblique rod in the form of a flexible shaft connection. The lower end of the push rod, make the lower end of the push rod leave the push rod positioning groove of the movable bracket, and then apply a clockwise force to the push rod, so that the push rod is close to the T-shaped inclined bar, so that the push rod can be stored and folded.

This type of trolley can be fully folded only by setting the T-shaped inclined bar and the folding mechanism of the hand push bar. Moreover, when folding, it can be gently stepped on twice and the hand push bar is pulled up once. The lower end can be realized, and the opening operation of the trolley can be opened automatically only by opening the frame, which is very simple and fast, and the structure is simple and reasonable, and the parts involved are small, which can reduce the cost and facilitate the promotion of the product use.

The present invention can also adopt the following technical measures to solve:

As a more specific solution, the telescopic control mechanism at the lower end of the push rod is installed on the push rod, which is mainly composed of a sliding sleeve, a pull bar and an inner sleeve. and the inner sleeve are placed in the rod body, one end of the tie bar is connected to the sliding sleeve, and the other end is connected to the lower end of the hand push rod, and the upper part of the lower end of the hand push rod is set in the sleeve hole of the inner sleeve; by lifting or pressing down the sliding sleeve, That is to say, the lower end of the push rod can be driven to slide up and down along the inner cavity of the push rod under the guidance of the inner sleeve, so as to realize the telescopic effect of the lower end of the push rod so as to fold or unfold the push rod.

As a better solution, the lower end of the hand push rod is tied with an independent positioning block, the end face of the positioning block inserted into the positioning groove of the hand push rod is an inclined plane, and the lower end of the hand push rod is inclined, so that it can be aligned with the hand push rod. The matching of the rod positioning groove is reasonable, and the effect of positioning and detachment is better.

As a more detailed solution, two fixed pieces are installed on the upper part of the lower end of the hand push rod, and the lower end of the pull bar is connected with the two fixed pieces.

The lower end of the T-shaped oblique rod is an independent plug-in block, the positioning groove is arranged on the front end of the plug-in block, and the rear end of the plug-in block passes through the movable bracket and is inserted into the body of the T-shaped oblique rod.

The movable bracket includes a horizontal part and a vertical part. The horizontal part is similar to the shaft shape of a T-shaped inclined bar and has an axial sleeve hole. The lower end of the hand push rod passes through the axial sleeve hole of the horizontal part. The vertical part includes a left , the right side lug and its rear side stopper, the bottom ends of the left and right side lugs protrude from the bottom of the movable bracket and are offset against the pedal of the bracket, and the shaft of the lower section of the hand push rod is installed on the left and right sides through the rotating shaft on the lugs, so that the movable bracket is flexibly connected with the bracket seat.

The bracket seat is sleeved on the rear section of the wheel group connecting rod, and the mounting seat extends upwards out of the lug seat, which is movably connected with the left and right side lugs of the movable bracket. Groove, a spring and a bracket pedal are placed in the installation groove, and the bracket pedal is pressed on the spring and protrudes upwards.

The beneficial effects of the present invention are as follows:

(1) The trolley of the present invention can realize the function of full folding only by setting the storage and folding mechanism of the T-shaped oblique bar and the hand push rod. It can be realized by pushing the lower end of the stalk with the hand, and the opening operation of the trolley only needs to open the frame to automatically open, which is very simple and fast, and the structure is simple and reasonable, and the parts involved are small, which can reduce the cost and effectively Conducive to the promotion and use of products.

Description of drawings

Fig. 1 is the perspective view of invention trolley;

Fig. 2 is another perspective view of the trolley in Fig. 1;

Fig. 3 is an exploded view of the invention trolley;

Figure 4 is an exploded view of the folded state of the handcart of the present invention;

Fig. 5 is a schematic diagram of the folding state of the trolley of the present invention.

Detailed ways

As shown in Figures 1 to 5, a fully foldable trolley includes a front wheel set 1, a rear wheel set 2, a wheel set connecting rod 3, a T-shaped oblique bar 4 and a hand push rod 5, and the front end of the wheel set connecting rod 3 Connected with the front wheel set 1, the rear wheel set 2 is equipped with a rear wheel axle 21, the rear wheel axle 21 is provided with a mounting seat 6, and the mounting seat 6 is provided with a connecting rod connection groove 61, and the rear end of the wheel set connecting rod 3 is inserted into the In the connecting rod connecting groove 61 of the mounting seat 6, the feature is that: the mounting seat 6 of the rear axle 21 is also provided with a diagonal rod connecting groove 62 and a pedal groove 63 respectively, and the lower end 41 of the T-shaped diagonal rod is inserted into the inclined rod. In the rod connection groove 62, the spring 7 and its inclined rod pedal 8 are placed in the pedal groove 63. The inclined rod pedal 8 is placed on the upper part of the spring 7 and exposed outside the pedal groove 63. The lower end 41 of the T-shaped oblique rod has a Positioning groove 9, one end of the inclined rod pedal 8 is clamped in the positioning groove 9 of the T-shaped inclined rod, the lower part of the T-shaped inclined rod 4 is equipped with a movable bracket 10, and the wheel group connecting rod 3 is equipped with a bracket seat 11, T-shaped Slant bar 4 is installed on the support base 11 of wheel group connecting rod with the shaft movable mode by its movable support 10 bottom ends, and support pedal 12 and its spring 13 are also installed beside the support seat 11 of wheel group connecting rod, and support pin Step 12 and movable support 10 bottoms, so that by stepping on the inclined bar foot pedal 8, one end of the inclined bar foot pedal 8 inserted into the positioning groove 9 is allowed to leave, so that the lower end 41 of the T-shaped inclined bar is not limited. By stepping on the bracket pedal 12, the T-shaped oblique bar 4 with the movable bracket 10 approaches the wheel set connecting rod 3 clockwise, and the T-shaped oblique bar 4 is stored and folded; the lower part 51 of the hand push rod is movably connected with a shaft installed on the upper part of the movable bracket 10 of the T-shaped inclined bar, the lower end 51 of the hand push rod is telescopic, and is inserted into the hand push rod positioning groove 1001 of the movable bracket 10, so that by pulling up the lower end 51 of the hand push rod, the The push rod lower end 51 leaves the push rod positioning groove 1001 of the movable bracket, and then applies a clockwise force to the push rod 5, so that the push rod 5 is close to the T-shaped inclined bar 4, and the push rod 5 is folded.

The telescopic control mechanism 13 of the lower end of the push rod is installed on the push rod 5, which is mainly composed of a sliding sleeve 131, a pull bar 132 and an inner sleeve 133. The sliding sleeve 131 is arranged on the shaft surface of the push rod 5, and the pull The bar 132 and the inner sleeve 133 are placed in the shaft. One end of the tie bar 132 is connected to the sliding sleeve 131, and the other end is connected to the lower end 51 of the hand push rod.

The lower end 51 of the push rod is an independent positioning block, and the end face inserted into the positioning groove 1001 of the push rod on the positioning block is an inclined plane 511; 132 lower ends are connected with two fixed pieces 134.

The lower end 41 of the T-shaped oblique rod is an independent plug-in block, the positioning groove 9 is arranged on the front end of the plug-in block, and the rear end of the plug-in block passes through the movable bracket 10 and is inserted into the shaft of the T-shaped oblique rod 4 .

Described movable bracket 10 comprises horizontal portion and vertical portion, and horizontal portion approximates the shaft shape of T-shaped oblique rod 4, and has axial sleeve hole, and hand push rod lower end 51 passes through the axial sleeve hole of horizontal portion, and its vertical It includes left and right side lugs 1002, 1003 and its rear side block 1004. The bottom ends of the left and right side lugs 1002, 1003 protrude from the bottom of the movable bracket 10 and are against the bracket pedal 12. The hand push rod 5. The shaft of the lower section is installed on the left and right lugs 1002, 1003 through the rotating shaft.

The support seat 11 is sleeved on the rear section of the wheel group connecting rod 3, and the support seat 11 extends upwards out of the lug seat 111, and the support lug seat 111 is movably connected with the left and right side lugs 1002 and 1003 of the movable support. , Also have installation groove 112 on the support base 11, be placed with spring 13 and support pedal 12 in the installation groove 112, support pedal 12 is pressed on the spring 13, and protrudes upwards.

Working principle: When folding, by stepping on the inclined rod pedal 8, one end of the inclined rod pedal 8 that is inserted into the positioning groove 9 is left, so that the lower end 41 of the T-shaped inclined rod is not limited. At this time, by stepping on the bracket pedal 12. Make the T-shaped diagonal bar 4 with the movable bracket 10 approach the wheel set connecting rod 3 in the clockwise direction, and fold the T-shaped diagonal bar 4; then, pull up the lower end 51 of the push rod to make the push rod The lower end 51 leaves the hand push rod positioning groove 1001 of the movable support, and then applies a clockwise force to the hand push rod 5, so that the hand push rod 5 is close to the T-shaped inclined bar 4, and the hand push rod 5 is folded. When opening, it is only necessary to open (pull) the T-shaped oblique bar 4 and the hand push rod to realize the opening operation.

Claims (4)

1. Full-foldable trolley, comprise front wheels (1), rear wheels (2), wheels connecting rod (3), T-shaped brace (4) and handspike (5), wheels connecting rod (3) front end is connected with front wheels (1), hind axle (21) is installed on rear wheels (2), be provided with mount pad (6) on hind axle (21), have connecting rod access slot (61) on mount pad (6), pegging graft in the connecting rod access slot (61) of mount pad (6) in wheels connecting rod (3) rear end, it is characterized in that:

Also have brace access slot (62) and foot-operated groove (63) on the mount pad (6) of described hind axle (21), peg graft in brace access slot (62) in T-shaped brace lower end (41), lay spring (7) and brace foot-operated (8) thereof in foot-operated groove (63), brace foot-operated (8) is placed in spring (7) top and exposes to outside foot-operated groove (63), T-shaped brace lower end (41) has positioning groove (9), one end holding of brace foot-operated (8) is in the positioning groove (9) of T-shaped brace, T-shaped brace (4) hypomere is equipped with travel(l)ing rest (10), carrier base (11) is installed on wheels connecting rod (3), T-shaped brace (4) is arranged on the carrier base (11) of wheels connecting rod by its travel(l)ing rest (10) bottom with the axle manner, and the carrier base of wheels connecting rod (11) side also is equipped with support foot-operated (12) and spring (13) thereof, support foot-operated (12) offsets with travel(l)ing rest (10) bottom, so that by trampling brace foot-operated (8), foot-operated (8) one ends of brace that allow holding enter positioning groove (9) leave, make not circumscribed of T-shaped brace lower end (41), now, again by trampling support foot-operated (12), make with the past clockwise direction of the T-shaped brace (4) of travel(l)ing rest (10) near wheels connecting rod (3), and make T-shaped brace (4) collection folding,

Handspike lower end (51) is arranged on travel(l)ing rest (10) top of T-shaped brace with the axle movable connection method, in the handspike positioning groove (1001) of handspike lower end (51) for telescoping the travel(l)ing rest of planting (10), so that by pull-up handspike lower end (51), make handspike lower end (51) leave the handspike positioning groove (1001) of travel(l)ing rest, apply clockwise direction power to handspike (5) again, make handspike (5) near T-shaped brace (4), realize that handspike (5) collection is folding;

Described handspike lower end (51) is a locating piece independently, and on this locating piece, planting into the end face in handspike positioning groove (1001) is inclined-plane (511);

The flexible operating-controlling mechanism (13) of handspike lower end is installed on described handspike (5), it mainly consists of sliding sleeve (131), tie rod (132) and inner sleeve (133), sliding sleeve (131) is arranged on the shaft surface of handspike (5), tie rod (132) and inner sleeve (133) are placed in shaft, tie rod (132) one ends connect sliding sleeve (131), the other end and handspike lower end (51) join, and the top quilt cover of handspike lower end (51) fixes in the trepanning of inner sleeve (133).

The top of described handspike lower end (51) is equipped with two fixed plates (134), and tie rod (132) lower end is connected with two fixed plates (134).

2. Full-foldable trolley according to claim 1, it is characterized in that, described T-shaped brace lower end (41) is the piece of independently pegging graft, and positioning groove (9) is arranged on the front end of grafting piece, on the shaft of the rear end of grafting piece through travel(l)ing rest (10) T-shaped brace (4) of planting.

3. Full-foldable trolley according to claim 2, it is characterized in that, described travel(l)ing rest (10) comprises transverse part and vertical part, the shaft shape of the approximate T-shaped brace (4) of transverse part, and have an axial trepanning, handspike lower end (51) is through the axial trepanning of transverse part, its vertical part comprises a left side, right side journal stirrup (1002, 1003) and rear side block (1004), a described left side, right side journal stirrup (1002, 1003) travel(l)ing rest (10) bottom is protruded in bottom, and offset with support foot-operated (12), the shaft of handspike (5) hypomere is arranged on a left side by rotating shaft, right side journal stirrup (1002, 1003) on.

4. Full-foldable trolley according to claim 3, it is characterized in that, described carrier base (11) is nested with the back segment in wheels connecting rod (3), carrier base (11) extends journal stirrup seat (111) upward, journal stirrup seat (111) is flexibly connected for axle with the left and right side journal stirrup (1002,1003) of travel(l)ing rest, also have mounting groove (112) on carrier base (11), be placed with spring (13) and support foot-operated (12) in mounting groove (112), support foot-operated (12) pressure is put at spring (13) upper, also protruding upward.

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