TWM471781U - Locking device for seat belt - Google Patents

Description

Seat belt buckle device

This creation is related to seat belts; in particular, a buckle for a seat belt.

The seat belt plays an important role in maintaining the safety of driving. Because its restraining effect can offset the inertia of the occupants in the accident, it can effectively prevent the occupants from being seriously injured. Strict and mandatory regulations apply; in addition to being used on the most common vehicles, seat belts are also widely found in any situation where it is necessary to limit the position of personnel to ensure safety, including aircraft, marine equipment, rides, and certain high-risk Sexual work environment provides the protection that users need. In fact, seat belts have become an indispensable part of everyday life for many people.

Generally speaking, the seat belt is fixed by using a buckle device, but the conventional buckle lock device usually can be released by pressing a single button. Although it is convenient to use, it is also common to cause the seat belt to be loose due to malfunction. The situation occurs, and the way of unlocking is too simple, even children can easily unfasten the seat belt, which inevitably adds a lot of safety concerns, so that the protective effect that the seat belt can provide is greatly reduced.

In view of this, the purpose of the present invention is to provide a buckle for a seat belt, which can prevent the situation from being unraveled due to malfunction.

In order to achieve the above object, the buckle device of the safety belt provided by the present invention comprises a buckle seat, a hook body, a stopper and a fastener, wherein the buckle seat has an inner space and an opening, and the inner space borrows The hook system is disposed in the inner space of the buckle seat, and is movable between a first position and a second position, wherein the hook body is in the first position in a normal state; The blocking member is disposed in the inner space of the buckle seat and is movable between a third position and a fourth position. The blocking member is normally located in the third position, and the stopping member comprises a pressing button, the pressing button has a force receiving surface exposed outside the buckle seat, and when the stopping member is located in the third position, the stopping member has a position on the moving path of the hook body, and the limitation The hook body moves from the first position to the second position; and includes a tongue plate, the tongue plate is inserted into the inner space from the opening, and the hook body located at the first position hooks the tongue plate so that the hook body The fastener cannot be separated from the buckle.

Thereby, pressing the force receiving surface of the pressure button to retract the stopping member from the third position to the fourth position, the hook body can be moved to the second position, so that the tongue plate is not When the hook body is hooked, the fastener can be pulled away from the buckle seat; in other words, if the fastener is to be pulled out of the buckle seat, the push button must be pushed first, and the hook body is moved to the first The two positions can be completed, so the possibility of unfastening the seat belt due to malfunction can be ruled out.

100‧‧‧Lock device

10‧‧‧ buckle seat

12‧‧‧ top board

14‧‧‧ pedestal

16‧‧‧Internal space

18‧‧‧ openings

20‧‧‧

22‧‧‧Hook

24‧‧‧ Force Department

26‧‧‧ end face

30‧‧‧stops

32‧‧‧ push block

32a‧‧‧ card stop

32b‧‧‧Bevel

34‧‧‧ Press button

342‧‧‧ force surface

36‧‧‧stop surface

40‧‧‧fasteners

42‧‧‧ tongue plate

422‧‧‧retracting the neck

424‧‧‧ 容 部

424a‧‧‧ wall

50‧‧‧ Spring

60‧‧‧Flexible parts

P1‧‧‧ first position

P2‧‧‧ second position

P3‧‧‧ third position

P4‧‧‧ fourth position

F1‧‧‧ first force

F2‧‧‧second force

C‧‧‧ scheduled trajectory

1 is a perspective view of a preferred embodiment of the present invention; FIG. 2 is a front exploded view of the preferred embodiment of FIG. 1; FIG. 3 is a rear exploded view of the preferred embodiment of FIG. A schematic diagram of the internal structure of the preferred embodiment discloses a situation in which the fastener and the buckle are tightly coupled; FIG. 5 is a cross-sectional view of FIG. 4, revealing that the stopper is in the third position. Figure 6 is a perspective view of another internal structure of the preferred embodiment of Figure 1, revealing the case where the fastener can be separated from the buckle; Figure 7 is a cross-sectional view of Figure 6 showing the position of the stop in the fourth position .

For a better illustration of the present invention, the preferred embodiment will be described in detail with reference to the accompanying drawings. Referring to FIG. 1 to FIG. 7 , a locking device 100 for a safety belt according to a preferred embodiment is provided. The utility model comprises a buckle seat 10, two hook bodies 20, a stopper 30, a fastener 40, two springs 50 and two elastic members 60. The buckle seat 10 has a top plate 12 and a base 14, the top plate An internal space 16 is defined by the base 14 and the internal space 16 is communicated with the outside through an opening 18; the fastener 40 includes a tongue 42 having a converging neck portion 422 and An accommodating portion 424 can enter the inner space 16 from the opening 18 of the buckle seat 10.

The two internal bodies 16 of the buckle seat 10 are provided with the same hook body 20, and each of the hook bodies 20 can be moved between the first position P1 shown in FIG. 4 and the second position P2 shown in FIG. In the preferred embodiment, each of the hooks 20 is pivotally moved between the first position P1 and the second position P2. The hook body 20 has a hook portion 22 at one end and a force receiving portion 24 at the other end. The two force receiving portions 24 protrude from the buckle seat 10 and can be driven by an external force to drive the hook body 20 to pivot. And when the two hook bodies 20 are located at the first position P1, the hook portions 22 respectively hook the two sides of the converging neck section 422 of the tongue plate 42. In addition, the two springs 50 are disposed in the inner space 16 of the buckle seat 10, respectively for pushing the hook body 20 to maintain the direction of the first position P1, where the hook body 20 is defined as normal. The lower system is located at the first position P1; the two springs 50 are used by the two springs 50 The force is applied to ensure that each of the hook portions 22 can tightly hook the two sides of the converging neck portion 422 of the tongue plate 42.

The stopper 30 is disposed in the inner space 16 and is movable between a third position P3 shown in FIG. 4 (and FIG. 5) and a fourth position P4 shown in FIG. 6 (and FIG. 7); More specifically, the stopper 30 moves between the third position P3 and the fourth position P4 in a direction perpendicular to the top plate 12. The stopper 30 includes a push block 32, a push button 34, and a two-stop surface 36 symmetrically disposed, wherein the push button 34 protrudes outside the buckle seat 10 in the preferred embodiment, and has an exposed portion. The force receiving surface 342 can move the blocking member 30 from the third position P3 to the fourth position P4 by pressing the force receiving surface 342 of the pressing button 34. In addition, the two elastic members 60 are disposed. In the inner space 16 of the buckle seat 10, the stopper 30 is pushed to move in the third position P3, and the stopper 30 is defined to be in the third position P3 in a normal state.

Each of the hooks 20 has an end face 26 which is pivoted along the predetermined position C along a hook 20 between the first position P1 and the second position P2 (ie, the hypothesis seen in FIG. 4) The line, in the preferred embodiment, is an arc) movement. When the blocking member 30 is located at the third position P3, the two stopping surfaces 36 are respectively located on the predetermined trajectory C of the hook body 20 and are connected to the end surface 26 of the hook body 20, The two hooks 20 are thus restricted from moving from the first position P1 to the second position P2; at the same time, the pushing block 32 of the blocking member 30 is received in the receiving portion of the tongue 42 Preferably, the accommodating portion 424 has a wall surface 424a. The pushing block 32 has a locking surface 32a. The locking surface 32a abuts the wall surface 424a, so that the tongue 42 cannot be directed toward the fastener 10. The opening 18 moves, which also helps to limit the fastener 40 from the buckle seat 10. Please refer to FIG. 4 and FIG. 5 . When the blocking member 30 is located at the third position P3 , the two hooks 20 stay at the first position P1 , and the two hook portions 22 closely hook the tongue 42 . Converging neck section 422 The accommodating portion 424 of the tongue plate 42 and the pushing block 32 of the blocking member 30 are respectively abutted against the locking surface 32a by the wall surface 424a, so that the fastening member 40 cannot be engaged with the buckle portion. 10 separation.

Referring to FIG. 6 and FIG. 7 , when the fastener 40 is to be taken out of the buckle 10 , the stopper 30 is moved from the third position P3 to the force receiving surface 342 of the pressing button 34 . In the fourth position P4, the pushing block 32 of the stopping member 30 is disengaged from the receiving portion 424 of the tongue plate 42, and the end surface 26 of the two hook body 20 no longer abuts the two of the blocking member 30. The blocking surface 36 can be pivoted from the first position P1 to the second position P2 by applying a first force F1 to the two force receiving portions 24, the tongue 42 The bundle neck portion 422 is then disengaged from the two hook portions 22, and the fastener 40 can be pulled away from the buckle seat 10 by applying a second force F2 to the fastener 40.

Further, the side of the push block 32 of the stopping member 30 can be further formed with a sloped surface 32b, and the inclined direction of the inclined surface 32b is such that the thickness of the pushing block 32 is gradually reduced toward the opening 18 of the buckle seat 10. Therefore, when the tongue 42 enters the inner space 16 from the opening 18 of the fastener 10, the tongue 42 presses against the inclined surface 32b to push the push block 32, so that the stop member 30 is temporarily retracted. The second stop surface 36 is not in contact with each of the end faces 26 of the two hook bodies 20, that is, the two hook bodies 20 can enter with the tongue plate 42. Pivoting to the second position P2, the tongue plate 42 can be unobstructed to reach its predetermined joint position; when the tongue plate 42 is positioned, the push block 32 can be accommodated in the receiving portion of the tongue plate 42 In the portion 424, the push block 32 is no longer pushed by the tongue plate 42, and the stop member 30 is restored to the third position P3. Here, according to the relative relationship between the components of the locking device 100 of the present invention, the fastener 40 can be firmly coupled with the buckle 10.

It should be particularly noted that the hook body 20 and the block of the preferred embodiment The number of the stop surface 36, the spring 50 and the elastic member 60 of the stopper 30 are two and are symmetrically arranged, but the number and arrangement positions of the components are not limited by the present invention. In other preferred embodiments, The shackle lock device can be designed to include only one of the above-mentioned components, but the collocation and actuation of the components are similar to those of the shackle device 100 of the preferred embodiment. .

According to the previous description, the buckle device 100 of the present invention can not be easily separated after the buckle 10 is coupled with the fastener 40. The user needs to push the button 34 and cooperate with the pivot of the hook body 20. The action can be made to disengage the fastener 40 from the buckle seat 10, thereby preventing the safety belt from being untied due to malfunction, thereby effectively ensuring safety. The above description is only for the preferred embodiment of the present invention, and the equivalent structural changes of the present invention and the scope of the patent application are intended to be included in the scope of the patent.

100‧‧‧Lock device

12‧‧‧ top board

14‧‧‧ pedestal

16‧‧‧Internal space

18‧‧‧ openings

20‧‧‧

22‧‧‧Hook

24‧‧‧ Force Department

26‧‧‧ end face

30‧‧‧stops

32‧‧‧ push block

32a‧‧‧ card stop

32b‧‧‧Bevel

34‧‧‧ Press button

342‧‧‧ force surface

36‧‧‧stop surface

40‧‧‧fasteners

42‧‧‧ tongue plate

422‧‧‧retracting the neck

50‧‧‧ Spring

Claims (7)

A buckle device for a seat belt, comprising: a buckle seat having an inner space and an opening, the inner space communicating with the outside through the opening; a hook body disposed in the inner space of the buckle seat, and The first position and the second position are movable, and the hook body is located in the first position in a normal state; a stopper is disposed in the inner space of the buckle seat, and is in a third position Moving between a position and a fourth position, the stopper is in the third position in a normal state, the stopper includes a pressing button, and the pressing button has a force receiving surface exposed outside the buckle seat, and When the blocking member is in the third position, the blocking member has a portion located on the moving path of the hook body, and restricts the hook body from moving from the first position to the second position; a fastener includes a a tongue plate, the tongue plate is inserted into the inner space from the opening, and the hook body located at the first position hooks the tongue plate so that the fastener cannot be separated from the buckle seat; thereby pressing the button The force receiving surface to retract the stopper from the third position to the fourth position The hook member can be moved to the second position, such that the tongue plate is not hooked to the hook member, the fastener can be pulled out relative to the buckle. The buckle device of the safety belt of claim 1, wherein the stopper has a push block, the tongue of the fastener has a receiving portion, and the stopper in the third position is pushed It is placed in the housing. The buckle device of the seat belt of claim 2, wherein the receiving portion has a wall surface, the pushing block has a locking surface; and the blocking portion is located at the third position And the locking surface of the push block abuts the wall surface to restrict the tongue from moving toward the opening of the buckle seat. The buckle device of the seat belt according to claim 2, wherein one side of the push block forms a slope, and the inclined direction of the slope causes the thickness of the push block to gradually decrease toward the opening of the buckle. The buckle device of the seat belt according to claim 1, wherein the stopper has a stopper surface, the hook body has an end surface along a predetermined trajectory along the hook body at the first position and the first Moving between the two positions, the stopping member located at the third position, the stopping surface is located on the predetermined trajectory and abutting the end surface to restrict movement of the hook body from the first position to the second position. The buckle device of the seat belt of claim 1 further includes an elastic member disposed in the inner space of the buckle seat for pushing the stopper to maintain the third position. The buckle device of the seat belt of claim 1, wherein the buckle seat further comprises a top plate and a base, the top plate and the base jointly define the inner space; the stop member is perpendicular to the top plate The direction moves between the third position and the fourth position.