CN2756523Y - Brake device of baby tricycle push cart - Google Patents

Abstract

The utility model relates to a brake device of a baby tricycle push cart, which comprises rear shafts (4), a support base (1) of the two rear shafts, two rear wheels (10), two rotary arms (2) for brake, a transverse rod (5) for brake, a locking piece (6), a sleeve of the locking piece (7), a front stabilizer (14), a transverse shaft (16), a transmission steel wire (12) and a draw rod (8), wherein a brake wheel (11) is arranged on the rear wheels; a circle of wheel teeth (9) are uniformly distributed on the circumference; an insertion block (3) is arranged on the side wall of the rotary arm for brake. When the transverse rod for brake is pressed down, the rotary arm for brake moves downwards and the insertion block is inserted in a gullet on the brake wheel; thus, the push cart is in a brake state; the transverse rod for brake is locked by the sleeve of the locking piece and the front stabilizer is rotated to two stabilizers and is positioned at a sagging position, which prevents the baby push cart from being turned over. The sleeve of the locking piece is pushed forwards so that the transverse rod for brake exits from a notch of the sleeve of the locking piece; then the rotary shaft for brake raises up; the insertion piece exits from the gullet of the brake wheel; when the front stabilizer returns to the stabilizers and is positioned at a horizontal position, the baby tricycle push cart returns to the state which can be pushed.

Description

Baby's three wheel barrows brake gears

Technical field

The utility model relates to a kind of parts of doll carriage, a kind of baby's three wheel barrows brake gears.

Background technology

Baby's three wheel barrows are to be used to carry the instrument that the baby trots out, sitting infant wherein, the adult carries out in the back.Go-cart is moved voluntarily and is met accident when preventing to stop, and needs install on doll carriage brake gear.General brake gear is arranged on the trailing wheel of go-cart, introduced a kind of drg that is used for doll carriage as Chinese patent 94243089.1, a drg is respectively arranged on each trailing wheel, the control effort of two drgs transmits by steel wire, and the application force on the side brake equipment can directly be affacted on the opposite side brake equipment.This structure, because steel wire is flexible, when transmitting braking force by steel wire, the braking force size of two trailing wheels is not too consistent.

Summary of the invention

The utility model is intended to propose the consistent doll carriage brake gear of braking-force ratio that another kind can make two trailing wheels, and can guarantee that baby's three wheel barrows can stably park when being in braking mode, not prone to tip over, a kind of later-model baby's three wheel barrows brake gears.

This baby's three wheel barrows brake gears comprise rear axle, two rear axle supports, two trailing wheels, two brake pivoted arms.Rear axle support is contained in the both sides of rear axle.Trailing wheel is contained in the two ends of rear axle, and the rear axle support of the inboard of each trailing wheel and a corresponding side is adjacent, and the sides adjacent with rear axle support on the trailing wheel respectively has a brake wheel, is uniform-distribution with circle gear teeth on the circumference of brake wheel.The front portion and the rear axle support of brake pivoted arm are hinged, and on the brake pivoted arm sidewall abaculus are arranged, and this abaculus protrudes to the brake wheel side direction, the brake pivoted arm is when setting aside commentaries on classics, in the teeth groove on the abaculus embedding brake wheel, the brake pivoted arm is upwards dialled when changeing, and abaculus withdraws from from the teeth groove of brake wheel.It also comprises brake cross bar, locking plate, locking plate cover, front support leg, transverse axis, transmission steel wire and pull bar.The two ends of brake cross bar fix with two rear portions of braking pivoted arms respectively, the front end and the rear axle of locking plate fix, the locking plate cover is enclosed within the rear end of locking plate, the locking plate cover can slide with respect to locking plate, locking plate cover inwall has a cell, the inside has one to push away spring, and this pushes away spring the locking plate cover is outwards withstood.There is a recess that can embed the brake cross bar rear end of locking plate cover, and when the cross bar that brakes was in depressed position, the cross bar that brakes snapped in the above-mentioned recess.Front support leg be shaped as ∏ shape, its stage casing and transverse axis fix, the two ends of transverse axis are installed on the front-wheel support, two feets of front support leg both sides are positioned at the both sides of front-wheel, front support leg can be that axle turns to that two feets are horizontal or sagging position with the transverse axis.The front end of pull bar fixes with the brake cross bar, the rear end of pull bar links to each other with a linked block on the front support leg by the transmission steel wire, when the brake cross bar presses down, tension transmission steel wire, make front support leg turn to two feets and be in sagging position, when lifting on the brake cross bar, the transmission steel wire loosens, and front support leg relies on the elastic returning of the spring on it to be horizontal to two feets.

When this baby's three wheel barrows brake gears use, the cross bar that will brake presses down, the brake cross bar drives two brake pivoted arms to setting aside commentaries on classics, in the teeth groove on the abaculus embedding brake wheel, car is in braking mode, because the brake cross bar is a rigidity, be delivered to relatively unanimity of two braking force sizes on the brake pivoted arm.Simultaneously, the cross bar of stopping snaps in the recess that locking plate puts locked.On the other hand, the pull bar tension transmission steel wire on the brake cross bar makes front support leg turn to two feets and is in sagging position, and doll carriage is if having inclination slightly at this moment, and the feet of respective side just contacts with ground, guarantees that doll carriage can overturning.The locking plate cover is pushed away forward, the brake cross bar is withdrawed from from the recess that locking plate puts, spring on the front support leg rotates back into feet with front support leg and is horizontal, driving the transmission steel wire cross bar that will brake simultaneously upwards draws, lift on the brake pivoted arm, abaculus withdraws from from the teeth groove of brake wheel, and car promptly is returned to the state that can promote again.

Description of drawings

Accompanying drawing 1 is the constructional drawing of this baby's three wheel barrows brake gears;

Accompanying drawing 2 is the detailed structure of brake pivoted arm;

Accompanying drawing 3 is the structure of locking plate and locking plate cover;

Accompanying drawing 4 is the A-A cutaway view of Fig. 3.

The specific embodiment

As shown in Figure 1, this baby's three wheel barrows brake gears comprise rear axle 4, two rear axle supports 1, two trailing wheels 10, two brake pivoted arms 2.Rear axle support is contained in the both sides of rear axle.Trailing wheel is contained in the two ends of rear axle, and the rear axle support of the inboard of each trailing wheel and a corresponding side is adjacent.Sides adjacent with rear axle support on the trailing wheel respectively has a brake wheel 11, is uniform-distribution with circle gear teeth 9 on the circumference of brake wheel.As shown in Figure 2, front portion and the rear axle support 1 of brake pivoted arm 2 are hinged, and 17 are the rotating shaft that brake pivoted arm and rear axle support are hinged among the figure.On the brake pivoted arm sidewall abaculus 3 is arranged, this abaculus protrudes to brake wheel 11 (among the figure shown in the dotted line) side direction, and the brake pivoted arm is to setting aside when changeing, and abaculus embeds in the teeth groove between the gear teeth 9 of brake wheel.The brake pivoted arm is upwards dialled when changeing (among the figure shown in the long and short dash line), and abaculus 3 withdraws from from the teeth groove of brake wheel.As shown in Figure 1, this baby's three wheel barrows brake gears also comprise brake cross bar 5, locking plate 6, locking plate cover 7, front support leg 14, transverse axis 16, transmission steel wire 12 and pull bar 8.The two ends of brake cross bar 5 fix with two rear portions of braking pivoted arms 2 respectively.The front end of locking plate 6 and rear axle 4 fix, and locking plate cover 7 is enclosed within the rear end of locking plate 6, and the locking plate cover can slide with respect to locking plate.As shown in Figure 3 and Figure 4, the inwall of locking plate cover 7 has a cell 20, and the inside has one to push away spring 21, and the locking plate cover is outwards withstood.Be to fix with front end and locking plate 6 that pin 22 will push away spring 21 among the figure, the other end that pushes away spring 21 withstands on the rear wall of cell 20.There is a recess 19 that can embed brake cross bar 5 rear end of locking plate cover 7, and when the cross bar that brakes was in depressed position, the cross bar that brakes snapped in the above-mentioned recess.Referring to Fig. 1, front support leg 14 be shaped as ∏ shape, its stage casing and transverse axis 16 fix, the two ends of transverse axis are installed on the front-wheel support and (do not draw among the front-wheel support figure).Two feets 13 of front support leg 14 both sides are positioned at the both sides of front-wheel, and front support leg can serve as that axle turns to two feets 13 and is horizontal or sagging position with transverse axis 16.Feet among the figure shown in the solid line is sagging position, and the feet shown in the dotted line is a level attitude.The front end of pull bar 8 fixes with brake cross bar 5.The rear end of pull bar links to each other with linked block 15 on the front support leg by transmission steel wire 12.The transmission steel wire also is called " brake steel wire ", and it comprises the outer tube of a steel wire fuse and a flexibility, and the two ends of outer tube are separately fixed at the appropriate location of vehicle frame, and the two ends of steel wire fuse link to each other with pull bar 8 and linked block 15 respectively.When the brake cross bar presses down, rely on the transmission of transmission steel wire, front support leg can turn to two feets and be in sagging position.When lifting on the brake cross bar, the transmission steel wire loosens, and front support leg relies on the elastic returning of the spring 18 on it to be horizontal to two feets.

The working process of this baby's three wheel barrows brake gears is as follows: the cross bar 5 that will brake presses down, can use hand, also can tramp with one's feet, brake cross bar 5 drives two brake pivoted arms 1 to setting aside commentaries on classics, in the teeth groove that abaculus 3 embeds on the brake wheels 11, car is in braking mode, simultaneously, the cross bar 5 of stopping snaps in the recess 19 on the locking plate cover 7, and the locking plate cover is pushed away the effect of the thrust of spring 21, the locking plate cover is pressed on the brake cross bar, and the brake cross bar is locked.Pull bar 8 tension transmission steel wires 12 on the brake cross bar 5 (saying exactly, is the steel wire fuse in the tension transmission steel wire) make front support leg 14 turn to two feets 13 and are in sagging position, prevent the doll carriage rollover, guarantee safety.With hand or pin locking plate cover 7 is pushed away (promptly direction shown in the arrow pushes away in Fig. 3) forward, brake cross bar 5 is withdrawed from from the recess that locking plate puts, the brake cross bar is upwards lifted by the tension of transmission steel wire, lift on the brake pivoted arm, abaculus withdraws from from the teeth groove of brake wheel, and car promptly is returned to the state that can promote again.Spring 18 on the front support leg rotates back into feet with front support leg and is horizontal.

Claims (1)

1, a kind of baby's three wheel barrows brake gears, comprise rear axle (4), two rear axle supports (1), two trailing wheels (10), two brake pivoted arms (2), rear axle support is contained in the both sides of rear axle, trailing wheel is contained in the two ends of rear axle, the rear axle support of the inboard of each trailing wheel and a corresponding side is adjacent, sides adjacent with rear axle support on the trailing wheel respectively has a brake wheel (11), be uniform-distribution with circle gear teeth (9) on the circumference of brake wheel, the front portion and the rear axle support of brake pivoted arm are hinged, on the brake pivoted arm sidewall abaculus (3) is arranged, this abaculus protrudes to the brake wheel side direction, the brake pivoted arm is when setting aside commentaries on classics, in the teeth groove on the abaculus embedding brake wheel, the brake pivoted arm is upwards dialled when changeing, abaculus withdraws from from the teeth groove of brake wheel, it is characterized in that it also comprises brake cross bar (5), locking plate (6), locking plate cover (7), front support leg (14), transverse axis (16), transmission steel wire (12) and pull bar (8), the two ends of brake cross bar (5) fix with two rear portions of braking pivoted arms respectively, the front end of locking plate (6) and rear axle (4) fix, locking plate cover (7) is enclosed within the rear end of locking plate (6), the locking plate cover can slide with respect to locking plate, locking plate cover inwall has a cell (20), the inside has one to push away spring (21), this pushes away spring the locking plate cover is outwards withstood, there is a recess (19) that can embed the cross bar (5) that brakes the rear end of locking plate cover, when the brake cross bar is in depressed position, the brake cross bar snaps in the above-mentioned recess, front support leg (14) be shaped as ∏ shape, its stage casing and transverse axis (16) fix, the two ends of transverse axis are installed on the front-wheel support, two feets (13) of front support leg both sides are positioned at the both sides of front-wheel, front support leg can be that axle turns to that two feets are horizontal or sagging position with the transverse axis, the front end of pull bar (8) fixes with brake cross bar (5), the rear end of pull bar links to each other with linked block (15) on the front support leg by transmission steel wire (12), when the brake cross bar presses down, tension transmission steel wire, make front support leg turn to two feets and be in sagging position, when lifting on the brake cross bar, the transmission steel wire loosens, and front support leg relies on the elastic returning of the spring (18) on it to be horizontal to two feets.

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