阅读说明：本技术 一种两级防飞出卡扣 (Two-stage anti-flying fastener ) 是由 石宽 付兆阳 王斯思 罗晓兰 于 2019-12-02 设计创作，主要内容包括：本发明公开了一种两级防飞出卡扣,包括卡夹外盖和卡夹底座,卡夹外盖的顶部设有一级台阶,一级台阶的顶部设有二级卡扣,卡夹底座的顶部外壁上对应一级台阶的位置设有与一级台阶相配合的卡块,卡夹底座的顶部内壁上对应一级台阶的位置设有用于顶紧一级台阶的顶臂,初始状态时,一级台阶卡接在卡块上且顶臂顶在一级台阶的内壁上,侧气帘弹出时,二级卡扣卡接在卡块上且顶臂顶在二级卡扣的内壁上；卡夹底座的底部设有卡子,卡夹外盖的底部对应卡子的位置设有与卡子相配合的反卡口,初始状态时,卡子卡接在反卡口内,侧气帘弹出时,卡子从反卡口内脱出。适用于汽车。(The invention discloses a two-stage anti-flying-out buckle, which comprises a clamping outer cover and a clamping base, wherein a first-stage step is arranged at the top of the clamping outer cover, a second-stage buckle is arranged at the top of the first-stage step, a clamping block matched with the first-stage step is arranged at the position, corresponding to the first-stage step, on the outer wall of the top of the clamping base, a jacking arm used for jacking the first-stage step is arranged at the position, corresponding to the first-stage step, on the inner wall of the top of the clamping base, the first-stage step is clamped on the clamping block and the jacking arm jacks the inner wall of the first-stage step in an initial state, the first-stage step is clamped on; the bottom of clamping base is equipped with the checkpost, and the position that the bottom of clamping enclosing cover corresponds the checkpost is equipped with the anti-bayonet socket with checkpost matched with, and during initial condition, the checkpost joint is in anti-bayonet socket, and when the side air curtain popped out, the checkpost was deviate from in the anti-bayonet socket. The automobile is suitable for automobiles.)

1. The utility model provides a buckle is prevented flying out by two-stage, includes clamping enclosing cover (1) and clamping base (2), its characterized in that: the clamp is characterized in that a first-stage step (3) is arranged at the top of the clamp outer cover (1), a second-stage buckle (4) is arranged at the top of the first-stage step (3), a jacking arm (6) used for jacking the first-stage step (3) is arranged at a position, corresponding to the first-stage step (3), on the outer wall of the top of the clamp base (2), a jacking arm (6) used for jacking the first-stage step (3) is arranged at a position, corresponding to the first-stage step (3), on the inner wall of the top of the clamp base (2), the first-stage step (3) is clamped on the clamping block (5) and the jacking arm (6) is jacked on the inner wall of the first-stage step (3) in an initial state, and when the side air curtain is popped out, the second-stage buckle (4) is clamped on the clamping block (5) and the jacking arm (6);

the bottom of clamping base (2) is equipped with checkpost (7), the bottom of clamping enclosing cover (1) corresponds the position of checkpost (7) be equipped with anti-bayonet socket (8) of checkpost (7) matched with, during initial condition, checkpost (7) joint is in anti-bayonet socket (8), when the side gas curtain pops out, checkpost (7) are followed deviate from in anti-bayonet socket (8).

2. A two-stage anti-fly clasp of claim 1, wherein: and the top arm (6) is provided with an elastic top block (6a) which is obliquely arranged.

3. A two-stage anti-fly snap as in claim 2, wherein: and a guide inclined plane (3a) is arranged on the inner wall of the first-stage step (3) corresponding to the elastic ejecting block (6 a).

4. A two-stage anti-fly clasp of claim 1, wherein: the top of clamping enclosing cover (1) is equipped with and is used for preventing one-level step (3) stretch into too much spacing tang (1a), the top of clamping base (2) be equipped with spacing tang (1a) matched with limit stop (2 a).

5. A two-stage anti-fly clasp of claim 1, wherein: the bottom of the clamping outer cover (1) is provided with a back pressure cantilever (9) corresponding to the position of the clamp (7) and used for pressing the clamp (7).

6. A two-stage anti-fly snap as in claim 5 wherein: the back pressure cantilever (9) is connected with the clamp outer cover (1) through a weakening arc-shaped connecting part (10).

7. A two-stage anti-fly clasp of claim 1, wherein: the number of the clips (7) is two.

8. A two-stage anti-fly clasp of claim 1, wherein: and the outer side wall of the clamping base (2) is provided with an installation clamping tongue (11) for installation.

Technical Field

The invention relates to the technical field of automobiles, in particular to a two-stage anti-flying-out buckle.

Background

At present, a side curtain safety system of an automobile is a protection system with passive safety (namely automobile safety performance), and the side curtain safety system is matched with a seat belt for use, so that effective anti-collision protection can be provided for passengers. When an automobile collides from the side, the head injury rate of the safety system of the side air curtain of the automobile can be reduced by 25%, the face injury rate can be reduced by about 80%, when the side air curtain is popped up, some buckles are easy to fly out due to insecure connection, and harm is caused to a human body.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a two-stage anti-flying-out buckle which has the advantages of anti-flying-out and the like, and solves the problem that some buckles are easy to fly out due to loose connection when a side air curtain is popped up, so that the human body is injured.

(II) technical scheme

In order to achieve the purpose of preventing the flying-out, the invention provides the following technical scheme: a two-stage anti-flying-out buckle comprises a clamp outer cover and a clamp base, wherein a first-stage step is arranged at the top of the clamp outer cover, a second-stage buckle is arranged at the top of the first-stage step, a clamping block matched with the first-stage step is arranged at the position, corresponding to the first-stage step, on the outer wall of the top of the clamp base, a jacking arm used for jacking the first-stage step is arranged at the position, corresponding to the first-stage step, on the inner wall of the top of the clamp base, the first-stage step is clamped on the clamping block, the jacking arm jacks the inner wall of the first-stage step, and when a side air curtain is popped out, the second-stage buckle is clamped on the clamping block, and the jacking arm jacks the;

the bottom of clamping base is equipped with the checkpost, the bottom of clamping enclosing cover corresponds the position of checkpost be equipped with the anti-bayonet socket of checkpost matched with, during initial state, the checkpost joint is in the anti-bayonet socket, when the side gas curtain pops out, the checkpost is followed deviate from in the anti-bayonet socket.

Through designing two-stage joint structure, can the absorbed energy when the first order buckle is deviate from behind the buckle atress when the side gas curtain expandes, reduce the rate of motion of clamping enclosing cover, because second level buckle joint force ratio is great again, just so can avoid the buckle because of connecting inseparable easy departure, cause the problem of injury to the human body, on the other hand can guarantee the normal of side gas curtain to pop out again. Simple structure, safe and reliable, simple to operate and with low costs.

Preferably, the top arm is provided with an elastic top block which is obliquely arranged. The elastic jacking block is additionally arranged, so that the jacking effect is improved.

Preferably, a guide inclined plane is arranged on the inner wall of the first-stage step corresponding to the elastic ejecting block. The guide inclined plane is additionally arranged, so that the secondary buckle and the primary step can be conveniently clamped in.

Preferably, the top of the clamp outer cover is provided with a limiting spigot for preventing the first-level step from extending into too much, and the top of the clamp base is provided with a limiting stop block matched with the limiting spigot. The added limit spigot and the limit stop block are matched with each other, so that the one-stage step can be prevented from extending too much.

Preferably, a back pressure cantilever for pressing the clip is arranged at the position, corresponding to the clip, of the bottom of the clip outer cover. The added back pressure cantilever plays a role of compressing the clip.

Preferably, the back pressure cantilever is connected with the clamp outer cover through a weakening arc-shaped connecting part. The weakening arc-shaped connecting part is beneficial to the deformation of the back pressure cantilever, so that the clip can be conveniently separated.

Preferably, the number of the clips is two.

Preferably, the outer side wall of the clamp base is provided with an installation clamping tongue for installation. The additional installation clamping tongue facilitates the installation of the clamping base.

Compared with the prior art, the invention provides a two-stage anti-flying-out buckle, which has the following beneficial effects:

1. through designing two-stage joint structure, can the absorbed energy when the first order buckle is deviate from behind the buckle atress when the side gas curtain expandes, reduce the rate of motion of clamping enclosing cover, because second level buckle joint force ratio is great again, just so can avoid the buckle because of connecting inseparable easy departure, cause the problem of injury to the human body, on the other hand can guarantee the normal of side gas curtain to pop out again. Simple structure, safe and reliable, simple to operate and with low costs.

2. The additional guide inclined plane facilitates the clamping of the secondary buckle and the primary step;

3. the additional limiting spigot is matched with the limiting stop block, so that the first-stage step can be prevented from being excessively stretched;

4. the added back pressure cantilever plays a role of compressing the clip;

5. the added weakened arc-shaped connecting part is beneficial to the deformation of the back pressure cantilever, so that the clip is convenient to be taken off;

6. the additional installation clamping tongue facilitates the installation of the clamping base.

Drawings

FIG. 1 is a schematic structural view of the present invention in an initial state;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;

FIG. 3 is an enlarged view of the invention at B in FIG. 2;

FIG. 4 is an enlarged view of E in FIG. 3 according to the present invention;

FIG. 5 is a schematic diagram of the structure of the present invention in the pop-up state;

FIG. 6 is a cross-sectional view taken along line C-C in FIG. 5 in accordance with the present invention;

FIG. 7 is another schematic structural diagram of the present invention in an initial state;

FIG. 8 is a cross-sectional view taken along line D-D of FIG. 7 in accordance with the present invention.

Wherein: the clamp comprises a clamp outer cover 1, a limiting spigot 1a, a clamp base 2, a limiting stop block 2a, a first-level step 3, a guide inclined plane 3a, a second-level buckle 4, a clamping block 5, a top arm 6, an elastic top block 6a, a clamp 7, a reverse bayonet 8, a reverse pressure cantilever 9, a weakening arc-shaped connecting part 10 and an installation clamping tongue 11.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-4, the embodiment discloses a two-stage anti-flying-out buckle, which includes a clamp outer cover 1 and a clamp base 2, wherein a first-stage step 3 is arranged at the top of the clamp outer cover 1, a second-stage buckle 4 is arranged at the top of the first-stage step 3, a clamping block 5 matched with the first-stage step 3 is arranged on the outer wall of the top of the clamp base 2 corresponding to the first-stage step 3, a top arm 6 for tightly propping against the first-stage step 3 is arranged on the inner wall of the top of the clamp base 2 corresponding to the first-stage step 3, the first-stage step 3 is clamped on the clamping block 5 and the top arm 6 is propped against the inner wall of the first-stage step 3 in an initial state, and when a side air curtain is popped out, the second-stage buckle 4 is clamped on the clamping block 5 and the top arm 6 is propped; the bottom of clamping base 2 is equipped with checkpost 7, the bottom of clamping enclosing cover 1 corresponds the position of checkpost 7 be equipped with 7 matched with anti-bayonet socket 8 of checkpost, during initial condition, 7 joints of checkpost are in anti-bayonet socket 8, when the side gas curtain pops out, checkpost 7 is followed deviate from in the anti-bayonet socket 8. Through designing two-stage joint structure, can the absorbed energy when the first order buckle is deviate from behind the buckle atress when the side gas curtain expandes, reduce the rate of motion of clamping enclosing cover, because second level buckle joint force ratio is great again, just so can avoid the buckle because of connecting inseparable easy departure, cause the problem of injury to the human body, on the other hand can guarantee the normal of side gas curtain to pop out again. Simple structure, safe and reliable, simple to operate and with low costs.

The top arm 6 is provided with an elastic top block 6a arranged obliquely. The elastic jacking block 6a is additionally arranged to increase the jacking effect. And a guide inclined plane 3a is arranged on the inner wall of the first-stage step 3 corresponding to the elastic jacking block 6 a. The additional guide inclined plane 3a facilitates the clamping of the second-level buckle 4 and the first-level step 3. The top of the clamp outer cover 1 is provided with a limiting spigot 1a for preventing the first-stage step 3 from extending into too much, and the top of the clamp base 2 is provided with a limiting stop block 2a matched with the limiting spigot 1 a. The added limit spigot 1a is matched with the limit stop 2a, so that the one-stage step 3 can be prevented from being stretched too much.

And a back pressure cantilever 9 for pressing the clip 7 is arranged at the bottom of the clip outer cover 1 corresponding to the clip 7. The added counter-pressure cantilever 9 plays a role of pressing the card 7. The back pressure cantilever 9 is connected with the clamp outer cover 1 through a weakening arc-shaped connecting part 10. The addition of the weakened arc-shaped connecting portion 10 facilitates the deformation of the counter-pressure cantilever 9, thereby facilitating the disengagement of the clip 7. The number of the clips 7 is two, and the number of the corresponding reverse bayonet 8 and the corresponding reverse cantilever 9 is also two. And the outer side wall of the clamping base 2 is provided with an installation clamping tongue 11 for installation. The additional installation clamping tongue 11 facilitates the installation of the clamping base 2.

This embodiment is through designing two-stage joint structure, can the absorbed energy when the first-level buckle is deviate from behind the buckle atress when the side gas curtain expandes, reduces the rate of motion of clamping enclosing cover, again because second level buckle joint force ratio is great, just so can avoid the buckle because of connecting inseparable easy departure, causes the problem of injury to the human body, and on the other hand can guarantee the normal of side gas curtain to pop out again. Simple structure, safe and reliable, simple to operate and with low costs. The added guide inclined plane 3a facilitates the clamping of the secondary buckle 4 and the primary step 3; the added limit spigot 1a is matched with the limit stop 2a, so that the first-stage step 3 can be prevented from being excessively stretched; the added back pressure cantilever 9 plays a role of pressing the clamp 7; the added weakened arc-shaped connecting part 10 is beneficial to the deformation of the back pressure cantilever 9, thereby facilitating the separation of the clamp 7; the additional installation clamping tongue 11 facilitates the installation of the clamping base 2.

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.