CN102424066A

CN102424066A - Locking device for folding child cart

Info

Publication number: CN102424066A
Application number: CN2011103721959A
Authority: CN
Inventors: 徐银昌
Original assignee: GROUP OF NINGBO SHENGMA CO Ltd
Current assignee: GROUP OF NINGBO SHENGMA CO Ltd
Priority date: 2011-11-21
Filing date: 2011-11-21
Publication date: 2012-04-25
Anticipated expiration: 2031-11-21
Also published as: CN102424066B

Abstract

The invention relates to a locking device for a folding child cart. Two ends of the locking device are connected to the folding child cart in a rotating mode. The locking device comprises a first support strip, a second support strip, a latch, a pressure torsion spring, an isolating sleeve and a rivet, wherein the rivet passes through the isolating sleeve, a hole on the second support strip and a hole on the first support strip in turn; the isolating sleeve passes through the pressure torsion spring and a waist hole of the latch in turn; the first support strip is provided with a right-angle bending part; notches are formed at two ends of the right-angle bending part; the second support strip is connected to the inner side of the right-angle bending part of the first support strip in the rotating mode; the latch is provided with a hook part which is a bidirectional U-shaped hook; the latch is provided with a semispherical bulge; a limit lug is locally turned out on the lower edge of the latch; two flanges stretch out of the upper edge of the latch and correspond to the notches at the two ends of the right-angle bending part of the first support strip; and the second support strip is provided with a positioning hole corresponding to the semispherical bulge of the latch. The locking device for the folding child cart is provided with only one independent locking mechanism, so that the structure of the whole cart is simplified.

Description

The blocking device of Foldable baby trolley

Technical field

The invention belongs to children trolley manufacturing technology field, be specifically related to a kind of blocking device of Foldable baby trolley.

Background technology

GB is following for the regulation of the folding blocking device of children trolley: folding blocking device will prevent that children from embracing out or putting into unexpected the folding of process vehicle of go-cart in car and with children.Be not intended to operation and cause the unexpected folding danger of go-cart for fear of adult or children, vehicle should be installed a blocking device at least, and discharges this blocking device and should meet one of following requirement: 1, two independently actions act on two independently in the mechanism; 2, two continuous actions, and when carrying out second action, first element should be at maintained state.For fear of the danger of not exclusively opening generation, vehicle should have a blocking device when opening go-cart, to come into force automatically at least.Existing Foldable baby trolley all adopts the latch-up structure of two independent agencies, realizes discharging purpose through the self contained function of two independent agencies.But, as far as children trolley, adopting two independent agencies, it is comparatively complicated that its structure seems.

Summary of the invention

The invention discloses a kind of blocking device of Foldable baby trolley, it has an independently lockout mechanism, and is simple in structure, and this lockout mechanism meets the security requirement of GB for children trolley.

The present invention takes following technical scheme: the blocking device of Foldable baby trolley; The two ends of this blocking device are rotationally connected with Foldable baby trolley; Blocking device comprises first stay, second stay, snap close, pressure torsion spring, spacer, rivet; Described rivet passes hole and the hole on first stay on spacer, second stay successively, and spacer passes the waist hole of pressing torsion spring and snap close successively; First stay is provided with a right angle bending part, and the two ends of this right angle bending part respectively are provided with a breach; The right angle bending part that is connected in first stay inboard the second stay rotary type; Snap close is provided with a hook portion, and this hook portion is that two-way U-shaped is hook-shaped, and snap close is provided with hemispherical projections, and a position-limiting ear is routed up in the part, lower edge of snap close, and two flanges are stretched out in the upper edge, and these two flanges are corresponding with the two ends breach of the right angle bending part of first stay; Second stay is provided with the hemispherical projections corresponding positioning hole with snap close.

Preferably, being provided with one in the hook portion lower edge of nearly snap close turns over to opposite flange with position-limiting ear.

Preferably, press torsion spring to be the truncated cone spiral fashion, its two ends are respectively stretched out and are reversed the limit, press the both ends of the surface of torsion spring to contact mutually with rivet, snap close respectively, and two reverse the limit and contact mutually with snap close upper edge, the first stay lower edge respectively.

The blocking device of Foldable baby trolley of the present invention only has an independently lockout mechanism, has simplified the structure of car load, and this lockout mechanism meets the security requirement of GB for children trolley.

Description of drawings

Fig. 1 is the structural representation of blocking device and frame for baby cart.

Fig. 2 is the blast constructional drawing of blocking device.

Fig. 3 is the front view that blocking device is in the lock state.

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

Fig. 5 is the B-B cutaway view of Fig. 3.

Fig. 6 is the birds-eye view that blocking device is in the lock state.

Fig. 7 is the back view that blocking device is in the lock state.

Fig. 8 is the front view that blocking device is in release position.

Fig. 9 is the C-C cutaway view of Fig. 8.

Figure 10 is the birds-eye view that blocking device is in release position.

Figure 11 is the back view that blocking device is in release position.

The specific embodiment

Below in conjunction with accompanying drawing the embodiment of the invention is elaborated.

Shown in Fig. 1-11; The blocking device A of present embodiment Foldable baby trolley comprises first stay 1, second stay 2, snap close 3, presses torsion spring 4, spacer 5, rivet 6; The right side back of the body frame pipe 8 of the outer end of first stay 1 and handle of umbrella type children trolley vehicle frame B is hinged, and the left side back of the body frame pipe 9 of the outer end of second stay 2 and handle of umbrella type children trolley vehicle frame B is hinged.

The inner of first stay 1 has a hole, corresponding ground, and the inner of second stay 2 also has a hole 2-1, and rivet 6 passes the interior stomidium 2-1 of spacer 5, second stay 2 and the interior stomidium of first stay 1 successively.Second stay 2 pastes with the inner part of first stay 1 mutually, and the two ends of spacer 5 peak at the head back side, second stay 2 of rivet 6 respectively.Can relatively rotate between second stay 2, first stay 1 and the rivet 6.

The upper side of first stay 1 forms right angle bending part 1-1 towards second stay, 2 bendings, 90 degree, and it is breach 1-2,1-3 that two ends, the curved end of this bending part 1-1 respectively are provided with a breach.This right angle bending part 1-1 is in the top of second stay 2, and the distance of second stay, 2 upper sides to rivet 6 is less than below the bending of first stay 1 distance to rivet 6.

Press torsion spring 4 to be the truncated cone spiral fashion, its two ends are respectively stretched out and are reversed limit 4-2,4-3.

The upper edge of snap close 3 forms two flange 3-1,3-2, and the distance between this two flange is a bit larger tham two breach 1-2 of first stay 1, the distance between 1-3.Have a waist hole 3-3 on the snap close 3.Snap close 3 has a hook portion, and this hook portion is the hook-shaped of two-way U-shaped, promptly hook portion positive with the coupler body back side relatively and dislocation, make hook portion from positive and the side surface direction shape that all takes the shape of the letter U.A position-limiting ear 3-6 is routed up in the part, lower edge of snap close 3, and has one to turn over to opposite flange 3-7 with position-limiting ear 3-6 in the lower edge of nearly hook portion.Spacer 5 passes the waist hole 3-3 that presses on torsion spring 4 and the snap close 3, and the both ends of the surface difference roof pressure of pressing torsion spring 4 is in the head back side of snap close 3 with rivet 6.Snap close 3 pastes with second stay 2 mutually, can relatively rotate between snap close 3 and the spacer 5.Snap close 3 also forms a hemispherical projections 3-4 towards second stay, 2 one sides, and is suitable therewith and accordingly, have a knock hole 2-2 on second stay 2.Press the upper edge 3-5 that limit 4-2 is positioned snap close 3 that reverses of torsion spring 4, reverse the lower edge 1-4 that limit 4-3 is positioned first stay 1.

When launching the perambulator operation: launch perambulator earlier, press down the middle part of blocking device again,, contact mutually with first stay, 1 right angle bending part 1-1 until second stay, 2 upper edges with its expansion.In the process of the middle part that presses down blocking device with its expansion: first stay, 1 right angle bending part promotes the flange 3-2 end face on the snap close 3; Contact mutually with first stay, 1 right angle bending part 1-1 until second stay, 2 upper edges; Meanwhile; Protruding 3-4 on the snap close 3 slips in the knock hole 2-2 on second stay 2 under the pressure effect of pressing torsion spring 4; And the flange 3-2 on the snap close 3 slips in the breach 1-3 of right angle bending part of first stay 1 under the elastic force effect of pressing torsion spring 4, two reverses under the twisting resistance effect on limit what press torsion spring 4 simultaneously, and the flange 3-1 on the snap close 3 is positioned at another breach of the right angle bending part of first stay 1; And the front of second stay 2, lower edge and the back side are positioned at the two-way U-shaped hook of snap close 3.This moment, this blocking device was in the lock state, in that do not have can't folding baby carrier under the release action situation.

During the folding baby carrier operation; Flange 3-7 on the pulling snap close 3 rotates snap close 3 downwards, has broken away from the lower edge 2-3 of second stay 2 until its hook portion; Again snap close 3 is promoted towards pressure torsion spring 4 directions; Leave plane, second stay, 2 place until its hook portion, at this moment, second stay 2 just can rotate along clockwise direction.Referring to Fig. 8-11, under this state, perambulator has been removed locking, can carry out folding operation.

This blocking device is in the release folding process: the protruding 3-4 on the snap close 3 breaks away from the knock hole 2-2 of second stay 2, contact mutually with 2 corresponding of second stays, and flange 3-2 end face contacts with the right angle bending part inner face of first stay 1 mutually.Flange 3-1 on the snap close 3 is positioned at the indentation, there of the right angle bending part of first stay 1 all the time.

When this blocking device during at the release folded state: snap close 3 receives under the effect of unexpected power, and the breach of right angle bending part 1-1 one end on the flange 3-1 on the snap close 3 and first stay 1 contacts mutually, and the position-limiting ear 3-6 on the snap close 3 contacts with the rivet 6 head back sides mutually.Its objective is in order to prevent that snap close 3 from receiving that the flange 3-2 on the snap close 3 slips in the breach of right angle bending part 1-1 one end on first stay 1 under the effect of unexpected power, thereby cause the blocking device lockout of described Foldable baby trolley.

Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining the present invention; And be not as to qualification of the present invention, as long as within the scope of the invention, all will drop on protection scope of the present invention to variation, the modification of above embodiment.

Claims

1. the blocking device of Foldable baby trolley; The two ends of this blocking device are rotationally connected with Foldable baby trolley; It is characterized in that: described blocking device comprises first stay, second stay, snap close, pressure torsion spring, spacer, rivet; Described rivet passes hole and the hole on first stay on spacer, second stay successively, and spacer passes the waist hole of pressing torsion spring and snap close successively;

Described first stay is provided with a right angle bending part, and the two ends of this right angle bending part respectively are provided with a breach; The right angle bending part that is connected in first stay inboard the described second stay rotary type;

Described snap close is provided with a hook portion; This hook portion is that two-way U-shaped is hook-shaped, and snap close is provided with hemispherical projections, and a position-limiting ear is routed up in the part, lower edge of snap close; Two flanges are stretched out in the upper edge, and these two flanges are corresponding with the two ends breach of the right angle bending part of first stay;

Described second stay is provided with the hemispherical projections corresponding positioning hole with snap close.

2. according to the blocking device of the said Foldable baby trolley of claim 1, it is characterized in that: be provided with one in the hook portion lower edge of nearly snap close and turn over to opposite flange with position-limiting ear.

3. according to the blocking device of the said Foldable baby trolley of claim 1; It is characterized in that: described pressure torsion spring is the truncated cone spiral fashion; Its two ends are respectively stretched out and are reversed the limit; Press the both ends of the surface of torsion spring to contact mutually with rivet, snap close respectively, and two reverse the limit and contact mutually with snap close upper edge, the first stay lower edge respectively.