CN217320139U - Quick unlocking device for knob type upper pull belt hook - Google Patents

Abstract

The utility model discloses a knob type quick unlocking device for an upper pull belt hook, which comprises an upper pull belt hook arranged at the end part of an upper pull belt of a safety seat, wherein the upper pull belt hook is connected with an unlocking assembly, the unlocking assembly is connected with a woven belt, the woven belt is connected with an adjusting hook assembly, and the adjusting hook assembly is used for connecting an anchor point on an automobile seat; the unlocking assembly comprises a shell, a U-shaped groove main body, a rivet, a braid, a bayonet lock, a cylinder slider, a spring and a knob, wherein the end part of the knob extends out of the shell; this quick unlocking device of knob formula stretching strap hook simple structure, convenient operation, locking intensity is reliable, can be on the basis that does not change whole seat structure just can be nimble convenient completion seat orientation or the regulation operation of every single move, has reduced the operation complexity, has promoted user experience and has felt, has stronger commonality moreover, can arrange multiple type children's safety seat and use.

Description

Quick unlocking device of knob formula upper stretching strap hook

Technical Field

The utility model relates to children's safety seat technical field, concretely relates to quick unlocking device of stretching strap hook on knob formula.

Background

For the child safety seat fixed by the upper pull belt, the upper pull belt is generally in a tensioning state, so that the safety seat is ensured to be installed and fixed correctly and stably, once the seat is installed, the direction or the pitching angle of the seat is adjusted, the traditional webbing adjusting device of the upper pull belt is close to an anchor point, the webbing is released to be inconvenient, the seat is also provided with the webbing adjusting device arranged at one end of the seat, and the webbing is required to be contracted and adjusted at each time, so that the convenience is realized. Some upper pull belts of belt retractors can solve the problem, but in actual operation, the problem that the belt stirring is blocked when facing the webbing take-up and pay-off opening can be solved.

For example, the chinese utility model patent (publication No. CN205951764U) discloses a motor vehicle child passenger restraint system in 2017, which includes a back plate and at least one safety webbing, the back plate is used to be attached to a seat of a motor vehicle, and the left and right sides of the back plate are respectively provided with a first guide hole, the horizontal distance between the first guide holes on the left and right sides can be adapted to the shoulder width of a child passenger, the at least one safety webbing includes the first safety webbing on the left and right sides, the first safety webbing passes through the first guide holes and is connected to a plurality of fixing points on the motor vehicle seat or a frame around the seat, so as to directly restrain the child passenger and the back plate on the seat of the motor vehicle; this system adjusts the length of the webbing by means of a length adjuster, but the orientation and pitch of the seat itself cannot be adjusted by means of it.

In practical use, the safety seat is often subjected to seat orientation adjustment or pitch angle adjustment during use, and in addition, in order to facilitate the fixing and removal of a child to and from the safety seat, the seat is also often adjusted to face the door when the child gets on and off the seat. However, the adjustment mode of the existing pull-up strap is undoubtedly inconvenient at this time, which can significantly increase the complexity of operation and reduce the user experience.

Disclosure of Invention

The utility model aims at providing a quick unlocking device of knob formula upper stretching strap hook to the problem that prior art exists.

In order to achieve the above object, the utility model adopts the following technical scheme:

a knob type quick unlocking device for an upper pull belt hook comprises the upper pull belt hook arranged at the end part of an upper pull belt of a safety seat, wherein the upper pull belt hook is connected with an unlocking assembly, the unlocking assembly is connected with a woven belt, the woven belt is connected with an adjusting hook assembly, and the adjusting hook assembly is used for connecting an anchor point on an automobile seat;

the unlocking assembly comprises a shell, a U-shaped groove main body is arranged in the shell, a rivet is arranged at one end of the U-shaped groove main body and connected with the woven belt through the rivet, a special hole is formed in the side wall of the other end of the U-shaped groove main body, a movable clamping pin is inserted into the special hole, and a reverse buckle matched with the special hole in use is arranged in the middle of the clamping pin; one end, far away from the U-shaped groove main body, of the bayonet lock is connected with a cylinder sliding piece, a spring is arranged between one end of the cylinder sliding piece and the side wall of the U-shaped groove main body, the other end of the cylinder sliding piece is connected with a knob, the end portion of the knob extends out of the shell, and the inner end portion of the knob is connected with the bayonet lock.

This quick unlocking device of knob formula stretching strap hook simple structure, convenient operation, locking intensity is reliable, can be on the basis that does not change whole seat structure just can be nimble convenient completion seat orientation or the regulation operation of every single move, has reduced the operation complexity, has promoted user experience and has felt, has stronger commonality moreover, can arrange multiple type children's safety seat and use.

This unlocking device just can unblock the pine fast through the knob and take off the stretching strap when safety seat is in the lock-out state for orientation or every single move are conveniently adjusted to the seat, and when children sat, during the seat return, taut block once more go up the stretching strap hook and accomplish the locking can, the adjustment hook assembly need not be taken off from car seat's anchor point, has reduced the operation degree of difficulty, has promoted the operation convenience.

The unlocking assembly is arranged through the matching of the knob, the cylinder sliding piece, the clamping pin, the spring and the U-shaped groove main body, only the knob is rotated to drive the clamping pin to rotate, insert or slide out the U-shaped groove main body, and unlocking and locking are completed. The back-off on the bayonet lock with the special hole cooperates, if work as the back-off can directly pass when being in the horizontality special hole just can block to rotatory certain angle, the elasticity that the spring provided can with the bayonet lock firmly blocks the terminal surface in the U type groove main part, provides the resilience after the knob unblock simultaneously and resets, and this kind of adjustment is comparatively simple, and the operation is also very convenient.

Furthermore, the bayonet lock is a T-shaped bayonet lock, and a pair of symmetrically arranged limiting columns is arranged at the end part of the bayonet lock; the end part of the bayonet lock penetrates through the cylinder sliding piece, the pair of limiting columns is located inside the cylinder sliding piece, and the end part of the knob is provided with a buckle and connects and fixes the limiting columns in the cylinder sliding piece.

The T-shaped bayonet lock is matched with the buckle at the end part of the knob in a buckling manner, so that the bayonet lock can be driven to rotate when the knob rotates, and meanwhile, the end part of the bayonet lock can be limited in the cylinder sliding piece, and the bayonet lock is prevented from being separated.

Furthermore, the knob comprises an outer knob part and an inner cylindrical part, the inner cylindrical part is sleeved in the cylindrical slider, a guide protrusion is arranged on the outer wall of the inner cylindrical part, a guide groove is arranged on the outer wall of the cylindrical slider, and the guide protrusion is arranged in the guide groove in a sliding manner.

The knob is matched with the cylinder sliding piece, so that the knob can slide in the cylinder sliding piece and rotate for a certain angle, and the functions of rotating and compressing the spring are achieved.

Further, the shell comprises an upper shell and a lower shell, the upper shell and the lower shell are fixedly connected through a plurality of screws, and the U-shaped groove main body is clamped and assembled between the lower shell and the upper shell; the upper shell and the lower shell are respectively provided with an arc-shaped supporting piece near the side wall of the shell, and the arc-shaped supporting pieces are used for supporting the cylinder sliding piece.

Further, still be equipped with in the casing and pass the spacing post of gluing of U type groove main part, it is right that spacing post of gluing is used for going up the stretching strap hook depth of insertion to carry on spacingly, prevents the stretching strap hook is crossed to insert and is collided with the harm casing inserted hole.

Further, the cylinder slider faces the end of the U-shaped groove main body and is provided with a spring seat, one end of the spring is sleeved on the spring seat, the other end of the spring is abutted against the U-shaped groove main body, and the spring is sleeved outside the bayonet lock.

Furthermore, the adjusting hook assembly comprises an adjusting hook movably connected with the mesh belt, a clamping plate and a protective shell for controlling the clamping plate are arranged at the joint of the adjusting hook and the mesh belt, an elastic sheet is connected to the middle of the adjusting hook through a half-round head rivet, and the elastic sheet is matched with the hook part of the adjusting hook for use.

The tip of meshbelt passes the regulation clearance of adjusting the hook assembly, meshbelt length can manually be adjusted, meshbelt regulation length satisfies the car anchor point to vapour seat headrest position. The protective shell is divided into an upper part and a lower part, the adjusting hook and the clamping plate are fixed in the protective shell through ultrasonic fusion, and the adjusting hook fixes the elastic sheet together through the half-round rivet.

Compared with the prior art, the beneficial effects of the utility model are that: 1. the knob type quick unlocking device for the upper pull belt hook is simple in structure, convenient to operate and reliable in locking strength, can flexibly and conveniently finish the adjustment operation of the seat orientation or pitching on the basis of not changing the whole seat structure, reduces the operation complexity, improves the user experience, has strong universality, and can be matched with various types of child safety seats for use; 2. when the safety seat is in a locked state, the unlocking device can quickly unlock and release the upper pull belt through the knob, so that the seat can be conveniently adjusted to face or pitch; 3. the unlocking assembly is arranged by matching the knob, the cylinder sliding piece, the bayonet lock, the spring and the U-shaped groove main body, and the bayonet lock is driven to rotate to insert into or slide out of the U-shaped groove main body only by rotating the knob to complete unlocking and locking; 4. the back-off on the bayonet lock with the special hole cooperates, if work as the back-off can directly pass when being in the horizontality special hole just can block to rotatory certain angle, the elasticity that the spring provided can with the bayonet lock firmly blocks the terminal surface in the U type groove main part, provides the resilience after the knob unblock simultaneously and resets, and this kind of adjustment is comparatively simple, and the operation is also very convenient.

Drawings

Fig. 1 is a schematic view of the overall structure of a knob type quick unlocking device for an upper pull belt hook of the present invention;

fig. 2 is an exploded view of the knob type quick unlocking device for the upper pull belt hook of the present invention;

fig. 3 is an exploded view of a knob, a cylinder slider, a spring and a bayonet lock of the quick unlocking device for the knob type upper pull belt hook of the present invention;

fig. 4 is a schematic view of a cross-sectional structure (opened state) of an unlocking assembly of the quick unlocking device for the knob-type upper pull belt hook according to the present invention;

fig. 5 is a schematic view of a cross-sectional structure (locked state) of an unlocking assembly of the knob type quick unlocking device for the upper pull belt hook according to the present invention;

in the figure: 1. a pull-up strap hook; 2. an unlocking assembly; 21. a knob; 2101. an outer knob portion; 2102. an inner cylindrical portion; 2103. a guide projection; 22. a cylinder slider; 2201. a guide groove; 23. a bayonet lock; 2301. reversing; 2302. a limiting column; 24. a spring; 25. a lower housing; 26. a U-shaped groove main body; 2601. a specific pore; 27. an upper housing; 28. a screw; 29. riveting; 3. weaving a belt; 4. an adjustment hook assembly; 41. protecting the shell; 42. a spring plate; 43. an adjusting hook; 44. a half-round head rivet; 45. clamping a plate; 5. and (6) pulling the belt upwards.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 5, a knob type quick unlocking device for an upper pull belt hook comprises an upper pull belt hook 1 arranged at the end of an upper pull belt of a safety seat, wherein the upper pull belt hook 1 is connected with an unlocking assembly 2, the unlocking assembly 2 is connected with a woven belt 3, the woven belt 3 is connected with an adjusting hook assembly 4, and the adjusting hook assembly 4 is used for connecting an anchor point on an automobile seat;

the unlocking assembly 2 comprises a shell, a U-shaped groove main body 26 is arranged in the shell, one end of the U-shaped groove main body 26 is provided with a rivet 29 and is connected with the mesh belt 3 through the rivet 29, a special hole 2601 is arranged on the side wall of the other end of the U-shaped groove main body 26, the special hole 2601 is a circular structure with a rectangular section, a movable bayonet 23 is inserted into the special hole 2601, and an inverted buckle 2301 matched with the special hole 2601 for use is arranged in the middle of the bayonet 23; one end of the bayonet 23 far away from the U-shaped groove main body 26 is connected with a cylinder sliding piece 22, a spring 24 is arranged between one end of the cylinder sliding piece 22 and the side wall of the U-shaped groove main body 26, the other end of the cylinder sliding piece is connected with a knob 21, the end part of the knob 21 extends out of the shell, and the inner end part of the knob 21 is connected with the bayonet 23.

This quick unlocking device of knob formula stretching strap hook simple structure, convenient operation, locking intensity is reliable, can be on the basis that does not change whole seat structure just can be nimble convenient completion seat orientation or the regulation operation of every single move, has reduced the operation complexity, has promoted user experience and has felt, has stronger commonality moreover, can arrange multiple type children's safety seat and use.

This unlocking device just can unblock fast through knob 21 and take off pull-up strap 5 when safety seat is in the lock-out state for orientation or every single move are conveniently adjusted to the seat, and when the children sat, during the seat return, taut block once more pull-up strap hook 1 accomplish the locking can, adjusting hook assembly 4 need not take off from car seat's anchor point, has reduced the operation degree of difficulty, has promoted the operation convenience.

The unlocking assembly 2 is matched with the knob 21, the cylinder sliding piece 22, the clamping pin 23, the spring 24 and the U-shaped groove main body 26, only the knob 21 is rotated to drive the clamping pin 23 to rotate, insert or slide out of the U-shaped groove main body 26, and unlocking and locking are completed. The reverse buckle 2301 on the bayonet lock 23 is matched with the special hole 2601, if the reverse buckle 2301 is in a horizontal state, the special hole 2601 can be directly penetrated, the special hole can be clamped by rotating a certain angle, the bayonet lock 23 can be firmly clamped on the inner end face of the U-shaped groove main body 26 by the elastic force provided by the spring 24, and meanwhile, the rebound resetting after the knob is unlocked is provided, so that the adjusting mode is simple and the operation is very convenient.

Open and locked state as shown in fig. 4 and 5, locking process: the upper pull belt hook 1 is inserted, the knob 21 is pressed to the limit position, and then the knob 21 is rotated clockwise by 90 degrees to be loosened, so that the upper pull belt hook 1 can be locked; an opening state: the knob 21 is rotated to the bottom counterclockwise, the reverse buckle 2301 of the bayonet 23 just can pass through the special hole 2601 on the side end face of the U-shaped groove main body 26, and the unlocking is realized under the spring force.

Further, the bayonet 23 is a T-shaped bayonet, and a pair of symmetrically arranged limiting columns 2302 is arranged at the end part; the end of the bayonet 23 passes through the cylinder slide 22 and makes the pair of the limiting columns 2302 located inside the cylinder slide 22, and the end of the knob 21 is provided with a snap and connects and fixes the limiting columns 2302 inside the cylinder slide 22.

The T-shaped bayonet lock is matched with the end part of the knob in a buckling mode, so that the bayonet lock 23 can be driven to rotate when the knob 21 rotates, and meanwhile, the end part of the bayonet lock 23 can be limited in the cylinder sliding piece 22, and the bayonet lock is prevented from being separated.

Further, the knob 21 includes an outer knob portion 2101 and an inner cylinder portion 2102, the inner cylinder portion 2102 is sleeved in the cylinder slider 22, a guide protrusion 2103 is disposed on an outer wall of the inner cylinder portion 2102, a guide slot 2201 is disposed on an outer wall of the cylinder slider 22, and the guide protrusion 2103 is slidably disposed in the guide slot 2201.

The cooperation between the knob 21 and the cylinder slider 22 enables the knob 21 to slide in the cylinder slider 22 and rotate a certain angle, thereby acting as a turning and compression spring 24.

Further, the housing comprises an upper housing 27 and a lower housing 25, the upper housing 27 and the lower housing 25 are connected and fixed through a plurality of screws, and the U-shaped groove main body 26 is clamped and assembled between the lower housing 25 and the upper housing 27; arc-shaped supporting pieces are further respectively arranged at the positions, close to the side walls of the shell, of the upper shell 27 and the lower shell 25, and the arc-shaped supporting pieces are used for supporting the cylinder sliding pieces.

Further, still be equipped with in the casing and pass the spacing post of gluing of U type groove main part 26, it is right that spacing post of gluing is used for going up stretching strap hook 1 depth of insertion carries on spacingly, prevents it collides with the harm casing inserted hole to go up stretching strap hook 1 and cross inserting.

Further, a spring seat is arranged at the end part of the cylinder sliding piece 22 facing the U-shaped groove main body 26, one end of the spring 24 is sleeved on the spring seat, the other end of the spring is abutted against the outer side of the side wall of the U-shaped groove main body 26, and the spring is sleeved outside the bayonet.

Further, the adjusting hook assembly 4 comprises an adjusting hook 43 movably connected with the mesh belt 3, a snap-gauge 45 and a protective shell 41 for controlling the snap-gauge 45 are arranged at the joint of the adjusting hook 43 and the mesh belt 3, a spring plate 42 is connected to the middle of the adjusting hook 43 through a half-round rivet 44, and the spring plate 42 is matched with the hook part of the adjusting hook 43 for use.

The end part of the mesh belt 3 penetrates through the adjusting gap of the adjusting hook assembly 4, the length of the mesh belt 3 can be manually adjusted, and the length of the mesh belt 3 is adjusted to meet the requirement that the automobile anchor point reaches the position of the automobile seat headrest. The protective shell 41 is divided into an upper part and a lower part, an adjusting hook 43 and a clamping plate 45 are fixed in the protective shell 41 through ultrasonic fusion, and the adjusting hook 43 fixes the elastic sheet 42 together through a half-round head rivet 44.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. A knob type quick unlocking device for an upper pull belt hook comprises the upper pull belt hook arranged at the end part of an upper pull belt of a safety seat, and is characterized in that the upper pull belt hook is connected with an unlocking assembly, the unlocking assembly is connected with a woven belt, the woven belt is connected with an adjusting hook assembly, and the adjusting hook assembly is used for being connected with an anchor point on an automobile seat;

the unlocking assembly comprises a shell, a U-shaped groove main body is arranged in the shell, a rivet is arranged at one end of the U-shaped groove main body and connected with the woven belt through the rivet, a special hole is formed in the side wall of the other end of the U-shaped groove main body, a movable clamping pin is inserted into the special hole, and a reverse buckle matched with the special hole in use is arranged in the middle of the clamping pin; one end, far away from the U-shaped groove body, of the bayonet lock is connected with a cylinder sliding piece, a spring is arranged between one end of the cylinder sliding piece and the side wall of the U-shaped groove body, the other end of the cylinder sliding piece is connected with a knob, the end portion of the knob extends out of the shell, and the inner end portion of the knob is connected with the bayonet lock.

2. The knob type quick unlocking device for the upper pull belt hook according to claim 1, wherein the bayonet is a T-shaped bayonet, and a pair of symmetrically arranged limiting columns is arranged at the end part of the bayonet; the end part of the bayonet lock penetrates through the cylinder sliding piece, the pair of limiting columns is located inside the cylinder sliding piece, and the end part of the knob is provided with a buckle and connects and fixes the limiting columns in the cylinder sliding piece.

3. The knob type quick unlocking device for a pull-up strap hook according to claim 1, wherein the knob comprises an outer knob portion and an inner cylindrical portion, the inner cylindrical portion is sleeved in the cylinder slider, a guide protrusion is arranged on an outer wall of the inner cylindrical portion, a guide groove is arranged on an outer wall of the cylinder slider, and the guide protrusion is slidably arranged in the guide groove.

4. The knob type quick unlocking device for the upper pull belt hook according to claim 1, wherein the shell comprises an upper shell and a lower shell, the upper shell and the lower shell are fixedly connected through a plurality of screws, and the U-shaped groove main body is assembled between the lower shell and the upper shell in a clamping manner; the upper shell and the lower shell are respectively provided with an arc-shaped supporting piece near the side wall of the shell, and the arc-shaped supporting pieces are used for supporting the cylinder sliding piece.

5. The knob type quick unlocking device for the upper pull belt hook according to claim 1, wherein a limiting rubber column penetrating through the U-shaped groove main body is further arranged in the shell and used for limiting the insertion depth of the upper pull belt hook.

6. The knob type quick unlocking device for the upper pull belt hook according to claim 1, wherein a spring seat is arranged at the end part of the cylinder sliding piece facing the U-shaped groove main body, one end of the spring is sleeved on the spring seat, the other end of the spring is abutted against the U-shaped groove main body, and the spring is sleeved outside the bayonet pin.

7. The knob type quick unlocking device for the upper pull belt hook according to claim 1, wherein the adjusting hook assembly comprises an adjusting hook movably connected with the mesh belt, a clamping plate and a protective shell for controlling the clamping plate are arranged at the joint of the adjusting hook and the mesh belt, an elastic sheet is connected to the middle of the adjusting hook through a half-round head rivet, and the elastic sheet is matched with the hook part of the adjusting hook.

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