CN218750427U - Two grades of back locks of push type unblock - Google Patents

Abstract

The utility model provides a two grades of back lock devices of push type unblock, on the spring bolt, the left side of second bayonet socket is provided with the turn-ups, the bottom surface of spring bolt sets up to the curved surface, on apron down, the left of spring bolt is provided with the second rivet, it has the unlocking plate to articulate on the second rivet, be provided with the second torsional spring between unlocking plate and the second rivet, the second torsional spring will unlock the plate toward counter clockwise offset, the one end of unlocking plate is provided with the transmission rivet, the transmission rivet sets up on the turn-ups right side, the other end of unlocking plate is connected with the connecting rod. The utility model discloses a two shelves locks have increased the unblock mode of push type, have improved the suitability of two shelves locks. And the transmission rivet of the unlocking plate moves on the flanging of the lock tongue in the unlocking process, the larger the rotation angle is, the more the contact position of the transmission rivet and the flanging is right, the farther the distance from the rotation axis of the lock tongue is, the larger the force arm is, the smaller the locking force value is, the smaller the required force is, and the easier the unlocking is.

Description

Two grades of back locks of push type unblock

Technical Field

The utility model relates to the field of machinary, especially, relate to car seat part, two shelves back locking device of push type unblock.

Background

The two-gear backrest lock device has two gears, and can realize the adjustment of two angles of the automobile seat backrest. However, in the prior art, the unlocking mode of the two-gear lock is controlled by the pull cable and the connecting rod, the pull cable and the connecting rod are pulled outwards to realize unlocking, the unlocking mode is limited, the adaptability is low, the force required by a user during unlocking is large, and the comfort is not enough.

Disclosure of Invention

An object of the utility model is to provide a two grades of back lock device of push type unblock, two grades of back lock device of this kind of push type unblock solve among the prior art two grades of lock unblock modes and compare limitation, the not enough technical problem of unblock travelling comfort.

The utility model discloses a two grades of back lock device of push type unblock, including lower apron and upper cover plate, lower apron in be provided with the downward notch of opening, on the apron down, the top of notch is provided with first rivet, it has the spring bolt to articulate on the first rivet, be provided with first torsional spring between spring bolt and the first rivet, first torsional spring is with the spring bolt biasing to anticlockwise, be provided with first bayonet socket and the second bayonet socket that the opening is right in the spring bolt, first bayonet socket is located the top of second bayonet socket, on the spring bolt, the left side of second bayonet socket is provided with the turn-ups, the bottom surface of spring bolt sets up to the curved surface, on the apron down, the left of spring bolt is provided with the second rivet, it has the unlocking plate to articulate on the second rivet, be provided with the second torsional spring between unlocking plate and the second rivet, the second torsional spring will unlock the plate toward anticlockwise biasing, the one end of unlocking plate is provided with the transmission rivet, the transmission rivet sets up on the turn-ups right side, the other end of unlocking plate is connected with the connecting rod.

Furthermore, the connecting rod is connected with the unlocking plate through a buckle.

Compared with the prior art, the utility model, its effect is positive and obvious. The utility model discloses a two grades of locks have increased the unblock mode of push type, through changing spring bolt structure, increase parts such as unlocking plate, connecting rod, and when pressing the connecting rod, the unlocking plate atress is rotatory, and the transmission rivet on the unlocking plate drives the spring bolt toward unblock direction motion, realizes the mode unblock of pressing, has improved the suitability of two grades of locks. And the transmission rivet of the unlocking plate moves on the flanging of the lock tongue in the unlocking process, the larger the rotation angle is, the more the contact position of the transmission rivet and the flanging is right, the farther the distance from the rotation axis of the lock tongue is, the larger the force arm is, the smaller the locking force value is, the smaller the required force is, and the easier the unlocking is.

Drawings

Fig. 1 is a schematic diagram of the two-gear backrest lock device with the push-type unlocking mechanism of the present invention.

Fig. 2 is an exploded schematic view of the two-gear backrest lock device with the push-type unlocking mechanism of the present invention.

Fig. 3 is a schematic view of a lock tongue in the two-position backrest lock device with the push-type unlocking mechanism of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments, but the present invention is not limited to this embodiment, and the protection scope of the present invention should be included in all similar structures and similar variations thereof. The utility model provides an upper and lower, preceding, back, left and right equidirectional use only for the description convenience, it is not right the technical scheme's of the utility model restriction.

As shown in fig. 1-3, the utility model discloses a two grades of back lock devices of push type unblock, including lower apron 2 and upper cover plate 1, lower apron 2 in be provided with the downward notch 20 of opening, on lower apron 2, the top of notch 20 is provided with first rivet 5, it has spring bolt 3 to articulate on first rivet 5, be provided with first torsion spring 4 between spring bolt 3 and the first rivet 5, first torsion spring 4 is with spring bolt 3 to the anticlockwise biasing, be provided with opening first bayonet 21 and second bayonet 22 to the right in the spring bolt 3, first bayonet 21 is located the top of second bayonet 22, on spring bolt 3, the left side of second bayonet 22 is provided with turn-ups 6, the bottom surface of spring bolt 3 sets up to curved surface 23, on lower apron 2, the left of spring bolt 3 is provided with second rivet 9, it has unblock board 7 to articulate on the second rivet 9, be provided with second torsion spring 8 between unblock board 7 and the second rivet 9, second torsion spring 8 is with unblock board 7 toward the anticlockwise biasing, the one end of unblock board 7 is provided with transmission 10, the right side of rivet is connected with connecting rod 25 of rivet 7, the other end of rivet is connected with the connecting rod.

Further, the connecting rod 25 is connected with the unlocking plate 7 through a buckle 28.

Specifically, the torsion spring, the rivet, the flanging 6 and the like in the embodiment all adopt the known schemes in the prior art, which are known by those skilled in the art and are not described herein again.

The working principle of the embodiment is as follows:

the lower cover plate 2 is connected with the seat support, the lock pin is connected with the seat backrest, and a first fixture block 27 and a second fixture block 26 are arranged on the lock pin. In an initial state, the backrest and the seat support are 0 degrees, the angle of the backrest is adjusted for the first time, the backrest is manually rotated upwards, the backrest drives the lock pin to be pushed in along the notch 20, the lock pin moves upwards along the curved surface 23 of the lock pin 3 to push the lock pin 3 to overcome the pressure of the first torsion spring 48 and rotate clockwise by taking the first rivet 5 as a rotating shaft, the first clamping block 27 of the lock pin is clamped into the second clamping opening 22, the lock pin is located at a first gear position at the moment, the backrest and the seat support are 90 degrees to 95 degrees, and the lock pin is locked by the lock pin 3 under the torsion of the first torsion spring 4. Then, the angle of the backrest is adjusted for the second time, the connecting rod 25 is pressed, the unlocking plate 7 is driven to overcome the pressure of the second torsion spring 8, the second rivet 9 serves as a rotating shaft to rotate clockwise, the unlocking plate 7 drives the lock tongue 3 through the transmission rivet 10 and the flanging 6, the lock tongue 3 overcomes the pressure of the first torsion spring 4, the first rivet 5 serves as a rotating shaft to rotate clockwise, the lock tongue 3 is unlocked when rotating to a proper position, the backrest is rotated again, the first clamping block 27 of the lock pin is clamped into the first clamping opening 21, the second clamping block 26 is clamped into the second clamping opening 22, the connecting rod 25 is loosened again, the lock pin is locked by the lock tongue 3 under the torsion of the first torsion spring 4, the lock pin is located at the second gear position, and the backrest and the seat support are in an angle of about 95-100 degrees.

The utility model discloses a two grades of locks have increased the unblock mode of push type, through changing 3 structures of spring bolt, increase parts such as unblock board 7, connecting rod 25, when pressing down connecting rod 25, 7 atress rotations of unblock board, the last transmission rivet 10 of unblock board 7 drives 3 toward unblock direction movements of spring bolt, realizes the mode unblock of pressing, has improved the suitability of two grades of locks. Moreover, in the unlocking process, the transmission rivet 10 of the unlocking plate 7 moves on the flanging 6 of the bolt 3, the position of the transmission rivet 10 contacting with the flanging 6 is more right along with the larger rotation angle, the farther the distance from the rotation axis of the bolt 3 is, the larger the formed force arm is, the smaller the locking force value is, the smaller the required force is, and the easier the unlocking is.

Claims (2)

1. The utility model provides a two shelves back locking device of push type unblock, includes lower apron and upper cover plate, its characterized in that: the lower cover plate is provided with a notch with a downward opening, the lower cover plate is provided with a lower cover plate, a first rivet is arranged above the notch, a spring bolt is hinged to the first rivet, a first torsion spring is arranged between the spring bolt and the first rivet, the spring bolt is biased towards the counterclockwise direction by the first torsion spring, a first bayonet and a second bayonet, the opening of which is towards the right, are arranged in the spring bolt, the first bayonet is positioned above the second bayonet, the spring bolt is arranged on the left side of the second bayonet, the bottom surface of the spring bolt is set to be a curved surface, a second rivet is arranged on the lower cover plate and on the left side of the spring bolt, an unlocking plate is hinged to the second rivet, a second torsion spring is arranged between the unlocking plate and the second rivet, the second torsion spring biases the unlocking plate towards the counterclockwise direction, one end of the unlocking plate is provided with a transmission rivet, the transmission rivet is arranged on the right side of the turned edge, and the other end of the unlocking plate is connected with a connecting rod.

2. The push-to-unlock two-position back lock device of claim 1, wherein: the connecting rod is connected with the unlocking plate through a buckle.

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