Quick unlocking device and unlocking method for upper pull belt hook
Technical Field
The invention relates to the technical field of child safety seats, in particular to a quick unlocking device and an unlocking method for an upper pull belt hook.
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 pull-up belts of belt retractors can solve the problem, but in actual operation, the problem that the belt stirring at the webbing take-up and pay-off opening is blocked can be met.
For example, in 2017, the chinese utility model patent (publication No. CN 205951764U) discloses a motor vehicle child passenger restraint system, which comprises a back plate and at least one safety webbing, wherein the back plate is used for being attached to a seat of a motor vehicle, and left and right sides are respectively provided with a first guide hole, a horizontal distance between the first guide holes on the left and right sides can be adapted to a shoulder width of a child passenger, the at least one safety webbing comprises the first safety webbing on the left and right sides, and after passing through the first guide holes, the first safety webbing is connected to a plurality of fixing points on a 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 this.
Also like the child safety seat disclosed in the Chinese utility model patent (publication number: CN 211166550U) in 2020, the child safety seat comprises a base, a seat body and a webbing adjusting device, wherein the webbing adjusting device is arranged at the rear of the seat, and is inconvenient to use and adjust.
In practical use, the safety seat may be subjected to seat orientation adjustment or pitch angle adjustment during use, and in addition, in order to facilitate the fixing or removing of a child on or from the safety seat, the seat may be adjusted to face the door when the child gets on or off the seat. However, the adjustment mode of the existing upper pull belt is undoubtedly inconvenient at this time, which can significantly increase the operation complexity and reduce the user experience.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a quick unlocking device and an unlocking method for an upper pull belt hook.
In order to realize the purpose, the invention adopts the technical scheme that:
a quick unlocking device for an upper pull belt hook comprises an upper pull belt connected with a safety seat body, wherein an upper pull belt hook is arranged at the end part of the upper pull belt, the upper pull belt hook is detachably connected with an unlocking assembly, the unlocking assembly is connected with a woven belt, an adjusting hook assembly is arranged at the end part of the woven belt, 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 used for connecting the woven belt is arranged at one end of the U-shaped groove main body, a movable bayonet lock is arranged at the other end of the U-shaped groove main body, and the bayonet lock is used for connecting the upper pull belt hook; the both sides of U type groove main part are still symmetrical to be equipped with and are used for control the button that the bayonet lock removed, the middle part of button is rotated and is set up in the casing, the one end joint of button the bayonet lock, the inboard of the other end of button with be equipped with between the U type groove main part for the bayonet lock provides the spring of closing force, expose in the outside of button the casing.
This unlocking device simple structure, the operation is reliable, sets up through the anchor point at last stretching strap hook and car seat unlocking assembly, meshbelt and regulation hook assembly make its regulation operation that just can be nimble convenient completion seat orientation or every single move on the basis that does not change whole seat structure, reduced the operation complexity, promoted user experience and felt, had stronger commonality moreover, can arrange multiple type children's safety seat and use.
This unlocking device can unblock the pine fast and take off the stretching strap when safety seat is in the locking state for orientation or every single move are conveniently adjusted to the seat, then block once more the locking of stretching strap hook completion can, the adjustment hook assembly need not take off from car seat's anchor point, has reduced the operation degree of difficulty, has promoted the operation convenience. If the seat needs to be adjusted in the direction to enable a child to get on or off the seat, the traditional upper pull belt hook can be quickly loosened, and when the child Tong Zuohao returns to the seat, the traditional upper pull belt hook can be directly tightened and locked.
According to the unlocking device, the unlocking hook can be realized by pressing the buttons on the two sides of the unlocking assembly, the hook can be locked by releasing the buttons, and the operation is simple; the unlocking assembly is an independent part and can be matched with the upper pull belt hook for use, and the button can control the opening and closing of the clamping pin so as to unlock and lock the hook; the U-shaped groove body is arranged to form a space for hook clamping connection in the shell, the other end of the U-shaped groove body can be connected with the woven belt through the rivet, meanwhile, the U-shaped groove body also provides a guiding space and a moving space for the clamping pins, and the clamping pins are mutually closed to form a pin shaft for hooking the hook in the U-shaped groove body. The rotatable button is matched with the spring to form an automatic reset function, so that the pair of clamping pins can be automatically closed.
Furthermore, one end of the U-shaped groove main body, which is close to the upper drawstring hook, is provided with a pair of symmetrically arranged front end holes, a pair of the bayonet locks are respectively sleeved in the front end holes, the U-shaped groove main body positioned above the front end holes is provided with an open slot, and a U-shaped chute crossing the U-shaped groove main body is arranged in the open slot; the bayonet lock is clamped between the structural branches of the button and slides in the sliding groove of the shell and the U-shaped sliding groove in a limiting manner.
The U-shaped sliding groove is a metal piece, so that the deflection resistance can be provided for the clamping pins on two sides, and the locking strength of the unlocking assembly is improved; meanwhile, the U-shaped sliding groove and the sliding groove in the shell are matched to provide guiding and limiting effects for the clamping pin, so that the clamping pin can complete reciprocating motion in the groove limited by the sliding groove. The open slot is used for fixing and clamping the U-shaped sliding groove.
Furthermore, the bayonet lock is a T-shaped bayonet lock, and the end part of the bayonet lock is provided with a pair of limiting cylinders which are symmetrically arranged, so that the bayonet lock can be matched with the structural branch of the button for use.
Furthermore, one end of the button is provided with a structural branch, the structural branch is provided with a cross clamping groove, and the main body part of the clamping pin and the limiting cylinder are respectively clamped in the cross clamping groove. The structural branch with the cross-groove-shaped section can simultaneously accommodate the axial main body part and the limiting cylinder part of the bayonet lock, so that the structural branch can drive the bayonet lock to do linear reciprocating motion in the rotating process of the button.
Furthermore, a rubber column is arranged in the shell, a rotary central hole is formed in the middle of the button, and the rotary central hole is sleeved on the rubber column, so that the button can rotate around the rubber column.
Furthermore, the button is symmetrically arranged on two sides of the shell, and anti-skid grains are arranged on the outer side of the main body of the button. The outer side of the button is exposed out of the shell, so that fingers can press the button conveniently, and the knob is rotated by pressing; the strip-shaped anti-skidding lines arranged outside the button can play a role in increasing friction force and preventing skidding, and the hand feeling of pressing is improved.
Furthermore, the rear end of the U-shaped groove body is provided with a pair of rear end holes, two ends of the rivet are fixed in the rear end holes, and the rivet penetrates through the mesh belt ring to fix one end of the mesh belt.
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, the U-shaped groove main body is assembled between the upper shell and the lower shell, and an upper notch of the U-shaped groove main body faces the upper shell; 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 gluey post is used for go up the stretching strap hook depth of insertion to carry on spacingly, prevents to go up the stretching strap hook and cross to insert to collide with the harm casing inserted hole.
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, the middle of the adjusting hook is connected with an elastic sheet 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.
Further, an unlocking method of the quick unlocking device for the upper pull belt hook is characterized in that a safety seat is fixedly installed on an automobile seat and is in a locked state, the upper pull belt hook is clamped and locked in an unlocking assembly at the moment, the unlocking assembly is fixedly connected with an adjusting hook assembly through a woven belt, and the adjusting hook assembly is fixed at an anchor point above the automobile seat;
when the orientation or the pitch of the safety seat needs to be adjusted, the unlocking method comprises the following steps: pressing a pair of buttons on two sides of the shell, wherein the buttons rotate to drive the clamping pins to be separated from the U-shaped groove main body, after the pair of clamping pins are separated, the upper pull belt hook is automatically separated from the unlocking assembly to finish unlocking, the pair of buttons are released, and the pair of clamping pins slide into the U-shaped groove main body again to finish resetting;
when the safety seat is adjusted, the upper pull belt hook is directly inserted into the U-shaped groove main body to hook the clamping pin, and then locking can be completed.
Compared with the prior art, the invention has the beneficial effects that: 1. the unlocking device is simple in structure and reliable in operation, the unlocking assembly, the braid and the adjusting hook assembly are arranged between the upper pull belt hook and the anchor point of the automobile seat, so that the adjustment operation of the seat orientation or pitching can be flexibly and conveniently completed on the basis of not changing the whole seat structure, the operation complexity is reduced, the user experience is improved, and the unlocking device 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, so that the seat can be conveniently adjusted in the direction or in the pitching direction, and then the hook of the upper pull belt is clamped again to complete locking, and the adjusting hook assembly does not need to be taken down from an anchor point of the automobile seat, so that the operation difficulty is reduced, and the operation convenience is improved; 3. the unlocking device can unlock the hook by pressing the buttons on the two sides of the unlocking assembly, and the hook can be locked by releasing the buttons, so that the operation is simple; the rotatable button is matched with the spring to form an automatic reset function, so that the pair of clamping pins are automatically closed; 4. the U-shaped sliding groove can provide anti-deflection capability for the clamping pins on two sides, and the locking strength of the unlocking assembly is improved; 5. the setting of spacing glue column can be right go up the stretching strap hook depth of insertion and carry on spacingly, prevent that the stretching strap hook from crossing to insert to collide with the harm casing inserted hole.
Drawings
FIG. 1 is a schematic view of the overall structure of a quick unlocking device for an upper pull belt hook according to the present invention;
FIG. 2 is a schematic axial side structure diagram of a quick unlocking device for an upper pull belt hook according to the invention;
FIG. 3 is an exploded view of a quick release device for an upper pull belt hook according to the present invention;
FIG. 4 is a schematic structural diagram of a bayonet lock of the quick unlocking device for the upper pull belt hook of the invention;
FIG. 5 is a schematic view of a button structure of the quick unlocking device for the upper pull belt hook according to the present invention;
FIG. 6 is a schematic structural view of a lower shell of the quick unlocking device for the upper pull belt hook of the invention;
FIG. 7 is a schematic view of a connection structure of a quick unlocking device for an upper pull belt hook according to the present invention;
in the figure: 1. a pull-up strap hook; 2. an unlocking assembly; 21. a lower housing; 2101. a chute; 2102. glue columns; 22. a U-shaped groove main body; 2201. a front end aperture; 2202. a rear end hole; 2203. an open slot; 23. a U-shaped chute; 24. an upper housing; 25. a button; 2501. structural branching; 2502. a rotating center hole; 2503. anti-skid lines; 26. a bayonet lock; 2601. a limiting column body; 27. a spring; 28. 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. pulling the belt upwards; 6. a safety seat.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, 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 those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The first embodiment is as follows:
as shown in fig. 1 to 7, the quick unlocking device for the upper pull belt hook comprises an upper pull belt 5 connected with a safety seat 6, wherein an upper pull belt hook 1 is arranged at the end part of the upper pull belt 5, an unlocking assembly 2 is detachably connected to the upper pull belt hook 1, the unlocking assembly 2 is connected with a mesh belt 3, an adjusting hook assembly 4 is arranged at the end part of the mesh belt 3, and the adjusting hook assembly 4 is used for being connected with an anchor point on the automobile seat;
the unlocking assembly 2 comprises a shell, a U-shaped groove main body 22 is arranged in the shell, a rivet 28 used for connecting the mesh belt 3 is arranged at one end of the U-shaped groove main body 22, a movable bayonet 26 is arranged at the other end of the U-shaped groove main body 22, and the bayonet 26 is used for connecting the upper pull belt hook 1; u type groove main part 22's both sides are still symmetrical be equipped with and are used for control the button 25 that bayonet lock 26 removed, the middle part of button 25 is rotated and is set up in the casing, the one end joint of button 25 bayonet lock 26, the inboard of the other end of button 25 with be equipped with between the U type groove main part 22 for bayonet lock 26 provides the spring 27 of closing force, the outside of button 25 exposes the casing.
This unlocking device simple structure, the operation is reliable, sets up through the anchor point at last stretching strap hook 1 and car seat unlocking assembly 2, meshbelt 3 and adjustment hook assembly 4 make its regulation operation that just can be nimble convenient completion seat orientation or every single move on the basis that does not change whole seat structure, reduced the operation complexity, promoted user experience and felt, had stronger commonality moreover, can arrange multiple type children's safety seat and use.
This unlocking device can unblock the pine fast and take off pull-up strap 5 when safety seat is in the locking state for orientation or every single move are conveniently adjusted to the seat, then 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. If the seat needs to be adjusted in the direction to enable a child to get on or off the seat, the traditional upper pull belt hook 1 can be quickly loosened, and when the child Tong Zuohao returns to the seat, the traditional upper pull belt hook can be directly tightened and locked.
According to the unlocking device, the hook can be unlocked by pressing the buttons 25 on the two sides of the unlocking assembly 2, the hook can be locked by releasing the buttons, and the operation is simple; the unlocking assembly 2 is an independent component and can be matched with the upper pull belt hook 1 for use, and the button 25 can control the opening and closing of the bayonet 26 so as to complete the unlocking and locking of the hook; the U-shaped groove main body 22 is arranged to form a space for hook clamping connection in the shell, the other end of the U-shaped groove main body can be connected with the mesh belt 3 through the rivet 28, meanwhile, the U-shaped groove main body 22 also provides a guiding and moving space for the bayonet pins 26, and a pair of bayonet pins 26 are mutually closed to form a pin shaft for hooking a hook in the U-shaped groove main body 22. The rotatable button 25 is matched with the spring 27 to form an automatic resetting function, so that the pair of clamping pins 26 are automatically closed.
Further, one end of the U-shaped groove main body 22 close to the pull-up strap hook 1 is provided with a pair of front end holes 2201 which are symmetrically arranged, a pair of the bayonet locks 26 are respectively sleeved in the front end holes 2201, the U-shaped groove main body 22 above the front end holes 2201 is provided with an open groove 2203, and a U-shaped chute 23 which stretches across the U-shaped groove main body 22 and has a downward notch is arranged in the open groove 2203; the detent 26 is trapped between the structural branches 2501 of the button 25 and slides in a limited manner in the slide groove of the housing and in the U-shaped slide groove 23.
The U-shaped sliding groove 23 is a metal part and can provide anti-deflection capability for the clamping pins 26 on two sides, so that the locking strength of the unlocking assembly is improved; meanwhile, the U-shaped sliding groove 23 and the sliding groove 2101 in the shell are matched to provide a guiding and limiting effect for the clamping pin 26, so that the clamping pin 26 can complete reciprocating motion in the groove defined by the sliding groove. The open slot 2203 is provided for fixing and engaging the U-shaped sliding slot 23.
Further, the detent 26 is a T-shaped detent having a pair of symmetrically disposed retention posts 2601 at its ends to mate with the structural branches 2501 of the button 25.
Further, one end of the button 25 is provided with a structural branch 2501, the structural branch 2501 is provided with a cross slot, and the main body part of the latch 26 and the limiting column 2601 are respectively clamped in the cross slot. The structural branch 2501 with a cross-sectional shape is adopted to accommodate the axial main part and the position-limiting cylindrical part of the latch 26 at the same time, so that the structural branch 2501 can drive the latch 26 to make a linear reciprocating motion during the rotation of the button 25, and the latch 26 does not separate from the structural branch 2501.
Further, the button 25 is symmetrically arranged on two sides of the housing, and the outer side of the main body of the button 25 is provided with anti-slip threads 2503. The outer side of the button 25 is exposed out of the shell, so that the pressing of fingers is facilitated, and the knob is rotated by pressing; the strip-shaped anti-skid lines arranged outside the button 25 can play a role in increasing friction force and preventing skid, and the pressing hand feeling is improved.
Further, a pair of rear end holes 2202 are formed in the rear end of the U-shaped groove main body 22, two ends of the rivet 28 are fixed in the rear end holes 2202, and the rivet 28 penetrates through a mesh belt ring to fix one end of the mesh belt.
Further, the shell comprises an upper shell 24 and a lower shell 21, the upper shell 24 and the lower shell 21 are fixedly connected through a plurality of screws, the U-shaped groove main body 22 is assembled between the upper shell 24 and the lower shell 21, and an upper notch of the U-shaped groove main body 22 faces the upper shell 24; still be equipped with on the casing 21 down and pass the spacing post of gluing of U type groove main part 22, it is right that spacing post of gluing is used for go up stretching strap hook 1 depth of insertion carries on spacingly, prevents that the stretching strap hook from crossing to insert to collide with the harm casing inserted hole.
Further, a rubber column 2102 is arranged in the lower housing 21, a rotary central hole 2502 is arranged in the middle of the button 25, and the rotary central hole 2502 is sleeved on the rubber column 2102, so that the button 25 can rotate around the rubber column 2102.
Further, the adjusting hook assembly 4 comprises an adjusting hook 43 movably connected with the mesh belt 3, a clamping plate 45 and a protective shell 41 for controlling the clamping plate 45 are arranged at the joint of the adjusting hook 43 and the mesh belt 3, the middle part of the adjusting hook 43 is connected with a spring plate 42 through a half-round head 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.
The second embodiment:
the embodiment provides an unlocking method of a quick unlocking device for an upper pull belt hook, and as shown in fig. 3 and 7, when a safety seat 6 is fixedly installed on an automobile seat and is in a locked state, at this time, the upper pull belt hook 1 is clamped and locked in the unlocking assembly 2, the unlocking assembly 2 is fixedly connected with an adjusting hook assembly 4 through a webbing 3, and the adjusting hook assembly 4 is fixed at an anchor point above the automobile seat;
when the orientation or the pitch of the safety seat 6 needs to be adjusted, the unlocking method comprises the following steps: pressing a pair of buttons 25 on two sides of the shell, wherein the buttons 25 rotate to drive the clamping pins 26 to be separated from the U-shaped groove main body 22, after the pair of clamping pins 26 are separated, the upper pull belt hook 1 is automatically separated from the unlocking assembly 2 to finish unlocking, the pair of buttons 25 are released, and the pair of clamping pins 26 slide into the U-shaped groove main body again to finish resetting;
when the safety seat is adjusted, the upper pull belt hook 1 is directly inserted into the U-shaped groove main body 22 to hook the bayonet 26, so that the locking can be completed.
The unlocking method is simple to operate, does not need to be operated at the anchor point behind the headrest of the vehicle seat, and is good in convenience.
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.