DE202023100708U1 - Buckle device for a safety seat - Google Patents

Abstract

Buckle device for a safety seat, comprising a buckle housing, characterized in that in the buckle housing there is provided a mounting plate on which a locking iron plate is rotatably provided, which is connected at an end close to the pivot point to a first spring which is inserted in a through hole of the Mounting plate is arranged, wherein the other end of the locking iron plate is provided with a locking tongue, which is used for connection with a tongue; a plurality of limiting bores being provided at an end of the locking iron plate close to the locking tongue, and a plurality of movable limiting rods being connected to the mounting plate, each via a second spring, which are located below the locking iron plate and cooperate with the limiting bore; a movable slide button being provided above the locking iron plate, the two side walls of which are each provided with a wedge-shaped recess, the wedge-shaped recesses cooperating with lateral delimiting rods on two sides of the locking iron plate, an end section of the sliding button being connected to a third spring for resetting, and wherein the top portion of the slide button is exposed from the buckle housing.

Description

TECHNICAL AREA

The present utility model relates to the technical field of child safety seats, specifically a buckle device for a safety seat.

STATE OF THE ART

With the improvement of safety consciousness, child safety seats are increasingly used in vehicles for domestic use. To ensure the safety of children when using a child safety seat, a seat belt or other buckle-up system is required. For fastening, such buckle-on systems are typically used in conjunction with snap buckles of various types to facilitate operation for users.

For example, the Chinese utility model patent (publication number: CN212500025 U) disclosed a buckle for a child seat in 2021. In this case, by using a buckle made of a plastic material, possible damage caused by a metal element can be avoided for babies and children. Actually, the body of a buckle is usually made of a plastic material, while metal members are used as the important fasteners, springs, screws, etc. provided therein to ensure the overall strength and stability. In other words, in addition to taking safety into account, the convenience of plugging in and unplugging, stability and durability are also of great importance for a buckle device.

CONTENT OF THE UTILITY MODEL

The object of the present utility model is to provide a buckle device for a safety seat in view of the problem in the prior art.

• Eine Steckschnallenvorrichtung für einen Sicherheitssitz umfasst ein Steckschnallengehäuse, wobei in dem Steckschnallengehäuse eine Montageplatte vorgesehen ist, an der ein Verriegelungseisenplättchen drehbar vorgesehen ist, das an einem nahe an dem Drehpunkt liegenden Ende mit einer ersten Feder verbunden ist, die in einer Durchgangsbohrung der Montageplatte angeordnet ist, wobei das andere Ende des Verriegelungseisenplättchens mit einer Verriegelungszunge versehen ist, die zum Verbinden mit einer Steckzunge dient; wobei an einem nahe an der Verriegelungszunge liegenden Ende des Verriegelungseisenplättchens mehrere Begrenzungsbohrungen vorgesehen sind und an der Montageplatte jeweils über eine zweite Feder mehrere bewegliche Begrenzungsstäbchen angeschlossen sind, die sich unterhalb des Verriegelungseisenplättchens befinden und mit der Begrenzungsbohrung zusammenwirken; wobei oberhalb des Verriegelungseisenplättchens ferner eine bewegliche Schiebetaste vorgesehen ist, deren zwei Seitenwände jeweils mit einer keilförmigen Aussparung versehen sind, wobei die keilförmigen Aussparungen mit seitlichen Begrenzungsstäbchen an zwei Seiten des Verriegelungseisenplättchens zusammenwirken, wobei ein Endabschnitt der Schiebetaste mit einer dritten Feder zum Rücksetzen verbunden ist, und wobei der obere Bereich der Schiebetaste aus dem Steckschnallengehäuse freiliegt.

According to the present utility model, the task is solved by the following configuration:

• A buckle device for a safety seat comprises a buckle housing, in which buckle housing a mounting plate is provided, on which a locking iron plate is rotatably provided, which is connected at an end lying close to the pivot point with a first spring, which is arranged in a through hole of the mounting plate wherein the other end of the locking iron plate is provided with a locking tongue for connection with a tongue; a plurality of limiting bores being provided at an end of the locking iron plate close to the locking tongue, and a plurality of movable limiting rods being connected to the mounting plate, each via a second spring, which are located below the locking iron plate and cooperate with the limiting bore; a movable slide button being provided above the locking iron plate, the two side walls of which are each provided with a wedge-shaped recess, the wedge-shaped recesses cooperating with lateral delimiting rods on two sides of the locking iron plate, an end section of the sliding button being connected to a third spring for resetting, and wherein the top portion of the slide button is exposed from the buckle housing.

The buckle device is characterized by a simple structure and good user-friendliness. The tongue can be released simply by pressing the external sliding button, which ensures good user-friendliness. Furthermore, the tongue can be locked quickly, which ensures high stability and safety.

The mounting plate is fixed in the buckle housing and can provide a platform for mounting other components. Furthermore, it can cooperate with the rotatable locking iron plate to achieve locking or unlocking of the buckle. The first spring is arranged in such a way that, in the normal state, it can lift one end of the locking iron plate and thus keep it substantially parallel to the mounting plate. Thus, the locking tongue at the front end can lock the tongue. By providing the restriction rod and the restriction hole, the lock iron plate can be further restricted and kept in its locked state.

The sliding button is arranged in such a way that it can be conveniently actuated by the user from outside the buckle housing and thus set in sliding motion and as it slides backwards the wedge-shaped recess can change the position of the lateral limit rod so that the locking iron plate is pressed and set in rotation . The third spring can automatically reset the slide button.

Functional principle of the buckle device: to lock the buckle when the buckle is unlocked, the tongue of the buckle is moved. The tongue thus sets the limit rod in motion. When the limiter rod moves to a certain position, the locking iron plate rotates under the action of the spring and locks the tongue; to unlock the buckle, the sliding button is pressed and moved, which then rotates the locking iron plate, the front end of which is raised. The limit bar is no longer limited and moves forward under the action of the second spring, causing the tongue to move outwards, thus completing the unlocking.

It is further contemplated that the tongue is a pair of symmetrically arranged structures and comprises a left tongue and a right tongue cooperating with each other, the left tongue and the right tongue being mated and inserted and locked together in the buckle housing. If only the left or right tongue is inserted, the buckle cannot be locked.

Further, it is provided that the mounting plate is fixed in the buckle body, and an inward bulging part is provided in the middle of the mounting plate, the inward bulging part is provided with a rotary shaft connected with lugs on two sides of the locking iron plate; wherein the front half of the mounting plate is provided with a restricting sliding hole through which one end of the restricting rod passes, one end of the restricting sliding hole being provided with a through hole receiving the second spring, and an end portion of the through hole being provided with a stopper plate attached to the second spring rests, is provided.

By providing the concave part, the arrangement of the rotating shaft is facilitated so that the locking iron plate can rotate around the shaft. By providing the limiter sliding groove serving for guiding and limiting, reciprocating movement of the second spring and the limiter rod is facilitated. By providing the stopper plate, the end portion of the second spring can be restricted and fixed.

Furthermore, it is provided that an alternative recess, which accommodates the locking tongue, is also provided in the front area of the mounting plate. In the locked state, the lower area of the locking tongue can pass through the escape recess, which increases the locking ability.

Further, it is provided that under the through hole within the buckle housing, a cross bar connected to and fixed to the first spring is provided, wherein an end portion of the slide button is also provided with a cross bar connected to and fixed to the third spring and wherein the central axis of the third spring is perpendicular to the central axis of the first spring. The provision of the cross-bar facilitates the connection or attachment of the respective spring and, in the locked state, the third spring and the first spring are held essentially perpendicular to one another.

Furthermore, it is provided that the wedge-shaped recess has an upwardly sloping part, so that the lateral limit rod on the locking iron plate can move in the oblique direction, thus achieving the turning of the locking iron plate.

Furthermore, it is provided that an arcuate pressure plate is provided on the slide button, which is exposed from the buckle housing in order to facilitate actuation with a finger.

Furthermore, it is provided that the buckle housing comprises an upper housing, a lower housing and a bottom cover, the bottom cover being detachably fastened under the lower housing via a snap fastener and a screw, the lower housing being connected to the upper housing via a plurality of screws, and wherein the mounting plate is fixed in the lower case. By detachably assembling the upper case, the lower case, and the bottom cover, assembly of internal components is facilitated.

Compared to the prior art, the present utility model is characterized by the following advantageous effects. 1. The buckle device features simple structure and good usability. The tongue can be released simply by pressing the external sliding button, which ensures good user-friendliness. Furthermore, the tongue can be locked quickly, which ensures high stability and safety. 2. The mounting plate is fixed in the buckle housing and can provide a platform for mounting other components. Furthermore, it can cooperate with the rotatable locking iron plate to lock or unlock to reach the buckle. 3. The sliding button is arranged in such a way that it can be conveniently operated by the user from outside the buckle housing and thus set in sliding motion, and when it slides backwards, the wedge-shaped recess can change the position of the side limit rod, so that the locking iron plate is pressed and rotated is transferred. The third spring can automatically reset the slide button.

character list

• 1 a schematic representation of the overall structure of a buckle device for a safety seat according to the present utility model;
• 2 a schematic representation of the internal structure of the buckle device for a safety seat according to the present utility model;
• 3 a schematic structural exploded view of the buckle device for a safety seat according to the present utility model;
• 4 a first schematic representation of the buckle device for a safety seat according to the present utility model in the locked state of the buckle;
• 5 a second schematic representation of the buckle device for a safety seat according to the present utility model in the locked state of the buckle; and
• 6 a schematic representation of the buckle device for a safety seat according to the present utility model in the unlocked state of the buckle.

DETAILED DESCRIPTION

In the following, the configurations according to the present utility model are fully and clearly explained in the utility model with reference to accompanying drawings, it being understood that the described embodiments represent only a part of the embodiments of the present utility model rather than all embodiments. All other embodiments, which can be obtained from the embodiments of the utility model by those skilled in the art without inventive activities, also belong to the scope of protection of the utility model.

In the description of the present utility model, the terms "center", "top", "bottom", "left", "right", "inside", "outside" etc. are used in relation to the illustrated orientation or positional relationship in FIG respective drawing is used only to describe the utility model and, if necessary, to simplify the description. In other words, these terms do not imply or explicitly indicate the positioning or the design and operation of the device or element in question in a predetermined position, so that the utility model is not restricted here either. Furthermore, it should be noted that the terms "first", "second", etc. should not be construed as an implied or explicit indication of relative importance and rather are used for descriptive purposes only.

How out 1 until 6 results, a buckle device for a safety seat comprises a buckle housing 1. In the buckle housing 1 is provided a mounting plate 2 on which a locking iron plate 3 is rotatably provided, which is connected at an end lying close to the pivot point to a first spring 8, which is in a through hole 201 of the mounting plate 2 is arranged. The other end of the locking iron plate 3 is provided with a locking tongue 301 which is used for connecting to a tongue 5. FIG. Several limiting bores 302 are provided at an end of the locking iron plate 3 close to the locking tongue 301, and several movable limiting rods 6 are connected to the mounting plate 2 via a second spring 7, which are located below the locking iron plate 3 and interact with the limiting bore 302. Also provided above the locking iron plate 3 is a movable sliding button 4 whose two side walls are each provided with a wedge-shaped recess 401 . The wedge-shaped recesses 401 interact with lateral delimiting rods 303 on two sides of the locking iron plate 3 . The rear end portion of the slide button 4 is connected to a third spring 9 for reset. The upper area of the sliding button 4 is exposed from the buckle housing 1 .

The buckle device is characterized by a simple structure and good user-friendliness. The tongue can be released simply by pressing the external sliding button 4, which ensures good user-friendliness. Furthermore, the tongue can be locked quickly, which ensures high stability and safety.

The mounting plate 2 is fixed in the buckle housing 1 and can provide a platform for mounting other components. Furthermore, it can cooperate with the rotatable locking iron plate 3 in order to achieve locking or unlocking of the buckle. The first spring 8 is arranged so that it can keep an end of the locking iron plate 3 substantially parallel to the mounting plate 2 in a normal state. Thus, the locking tongue 301 at the front end can lock the tongue 5 . By providing the restriction rod 6 and the restriction hole 302, the lock iron chip 3 can be further restricted and kept in its locked state.

The sliding button 4 is arranged in such a way that it can be conveniently actuated by the user from outside the buckle housing 1 and can thus be set in sliding motion and during its sliding movement backwards the wedge-shaped recess 401 can change the position of the lateral limiting rod 303 so that the locking iron plate 3 is pressed and set in rotation. The third spring 9 can automatically reset the slide button.

Functional principle of the buckle device: for locking with the buckle unlocked, the tongue 5 of the buckle is moved. The tongue 5 thus sets the delimiting rod 6 in motion. When the limit rod 6 moves to a certain position, the locking iron plate 3 rotates under the action of the spring and locks the tongue 5. To unlock the buckle, the sliding button 4 is pressed and moved, which then rotates the locking iron plate 3, the front one of which is end is raised. The limiting bar 6 is no longer limited and moves forward under the action of the second spring 7, causing the tongue 5 to move outwards and thus unlocking is completed.

The tongue 5 is formed as a pair of symmetrically arranged structures. Locking can only be achieved by mating and simultaneously inserting the pair, while no locking can be achieved when inserting a separate part.

Furthermore, it is provided that the mounting plate 2 is fastened in the buckle housing 1 and in the middle of the mounting plate 2 an inwardly curved part 202 is provided. The inwardly curved portion 202 is provided with a rotary shaft 10 connected to lugs on two sides of the locking iron plate 3. The front half of the mounting plate 2 is provided with a limit slide hole 203 through which one end of the limit rod 6 passes. One end of the limit slide hole 203 is provided with a through hole that accommodates the second spring 7 . An end portion of the through hole is provided with a stop plate 204 which abuts against the second spring 7 .

Providing the inwardly bulging part 202 facilitates the arrangement of the rotating shaft 10 so that the lock iron plate 3 can rotate around the shaft. By providing the restriction sliding groove 203 serving for guiding and restricting, reciprocating movement of the second spring 7 and the restriction rod 6 is facilitated. By providing the stopper plate 204, the end portion of the second spring 7 can be restricted and fixed.

Furthermore, it is provided that in the front area of the mounting plate 2 there is also an alternative recess 205, which serves to accommodate the locking tongue. In the locked state, the lower portion of the locking tongue 301 can pass through the avoidance recess 205, which increases the locking ability.

Furthermore, it is provided that under the through-hole 201 within the buckle housing 1, a cross-bar is provided, which is connected to the first spring 8 and fastens it. An end portion of the slide key 4 is also provided with a cross bar 402 which is connected to the third spring 9 and fixes it. In the locked state, the center axis of the third spring 9 is kept substantially perpendicular to the center axis of the first spring 8 .

Further, the wedge-shaped recess 401 is designed to have an upwardly inclined part, so that the lateral limit rod 303 on the locking iron plate 3 can move in the oblique direction, thereby achieving the turning of the locking iron plate 3 .

Furthermore, it is provided that an arcuate pressure plate is provided on the slide button 4, which is exposed from the buckle housing 1 in order to facilitate operation with a finger.

It is further provided that the buckle housing 1 comprises an upper housing 102 , a lower housing 101 and a bottom cover 103 . The bottom cover 103 is detachably fixed under the lower case 101 by a snap fastener and a screw. The lower case 101 is connected to the upper case 102 with a plurality of screws. The mounting plate 2 is in attached to the lower case 101. By detachably assembling the upper case 102, the lower case 101, and the bottom cover 103, assembly of internal components is facilitated.

Notwithstanding the illustrated and described embodiments of the present utility model, it will be understood by those of ordinary skill in the art that various alterations, modifications, substitutions and variations can be made without departing from the principles and spirit of the utility model and that the scope of the present utility model is defined by the appended claims and their Equivalent is defined.

reference list

1

buckle housing

101

lower case

102

upper case

103

bottom cover

2

mounting plate

201

through hole

202

inwardly curved part

203

limit slide recess

204

stop plates

205

evasive exception

3

locking iron plate

301

locking tongue

302

limiting bore

303

side border stick

4

slide button

401

wedge-shaped recess

402

cross stick

5

tongue

6

Boundary Sticks

7

second spring

8th

first spring

9

third spring

10

rotary shaft

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• CN212500025 [0003]

Claims (8)

Buckle device for a safety seat, comprising a buckle housing, characterized in that a mounting plate is provided in the buckle housing, on which a locking iron plate is rotatably provided, which is connected at an end lying close to the pivot point to a first spring, which is in a through hole of the Mounting plate is arranged, wherein the other end of the locking iron plate is provided with a locking tongue, which is used for connection with a tongue; a plurality of limiting bores being provided at an end of the locking iron plate close to the locking tongue, and a plurality of movable limiting rods being connected to the mounting plate, each via a second spring, which are located below the locking iron plate and cooperate with the limiting bore; a movable slide button being provided above the locking iron plate, the two side walls of which are each provided with a wedge-shaped recess, the wedge-shaped recesses cooperating with lateral delimiting rods on two sides of the locking iron plate, an end section of the sliding button being connected to a third spring for resetting, and wherein the top portion of the slide button is exposed from the buckle housing. Buckle device for a safety seat claim 1 characterized in that the tongue is a pair of symmetrically arranged structures and comprises a left tongue and a right tongue cooperating with each other, the left tongue and the right tongue being mated and inserted and locked together in the buckle housing. Buckle device for a safety seat claim 1 characterized in that the mounting plate is fixed in the buckle body and an inwardly bulging part is provided in the middle of the mounting plate, the inwardly bulging part being provided with a rotary shaft connected to lugs on two sides of the locking iron plate; wherein the front half of the mounting plate is provided with a restricting sliding hole through which one end of the restricting rod passes, one end of the restricting sliding hole being provided with a through hole receiving the second spring, and an end portion of the through hole being provided with a stopper plate attached to the second spring rests, is provided. Buckle device for a safety seat claim 1 , characterized in that in the front area of the mounting plate there is also an alternative recess which accommodates the locking tongue. Buckle device for a safety seat claim 1 , characterized in that under the through-hole inside the buckle housing, a cross-bar connected to and fixed to the first spring is provided, wherein an end portion of the slide button is also provided with a cross-bar connected to and fixed to the third spring and wherein the central axis of the third spring is perpendicular to the central axis of the first spring. Buckle device for a safety seat claim 1 , characterized in that the wedge-shaped recess has an upwardly inclined part. Buckle device for a safety seat claim 1 , characterized in that an arcuate pressure plate is provided on the slide button, which is exposed from the buckle housing. Buckle device for a safety seat claim 1 , characterized in that the buckle housing comprises an upper housing, a lower housing and a bottom cover, the bottom cover being detachably fixed under the lower housing via a snap fastener and a screw, the lower housing being connected to the upper housing via a plurality of screws, and wherein the mounting plate is fixed in the lower case.

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