CN210337658U

CN210337658U - Small-size automobile seat backrest lock

Info

Publication number: CN210337658U
Application number: CN201921044193.5U
Authority: CN
Inventors: 何梦阳
Original assignee: SUZHOU HONGLI AUTO PARTS CO Ltd
Current assignee: SUZHOU HONGLI AUTO PARTS CO Ltd
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2020-04-17
Anticipated expiration: 2029-07-05

Abstract

The utility model discloses a small car seat back lock, including first casing, second casing, ratchet, pawl, lock piece and extension spring, first casing with be provided with first pivotal axis and second pivotal axis between the second casing, the ratchet with the lock piece rotates to be installed on the first pivotal axis, the pawl includes pawl main part and latch hook, the pawl main part rotates to be installed on the second pivotal axis, the ratchet with the pawl main part meshes mutually, one side of lock piece supports and leans on the side of pawl main part, the lock piece is kept away from the side of pawl main part is provided with the kink, the first end of extension spring with the kink is connected, the second end of extension spring with first casing is connected. The utility model provides a small car seat back lock, it provides the locking power of lock plate through the extension spring to make the volume reduce, improved space utilization, simple structure moreover, the cost is lower.

Description

Small-size automobile seat backrest lock

Technical Field

The utility model relates to a car seat back lock especially relates to a small car seat back lock.

Background

The backrest lock applied to the rear seat of the automobile generally hooks a lock rod on the seat through a lock hook so as to realize locking. In a backrest lock, a locking piece, a ratchet wheel, a pawl and the like are rotatably mounted, wherein the purpose of the locking piece is to make the locking more stable. In order to improve the locking effect of the locking piece, the locking piece is connected with a torsional spring. But because the thickness of torsional spring is thicker, lead to the back lock thickness of locking piece connection torsional spring thicker, holistic volume is great, and space utilization is low.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a small car seat back lock, it provides the locking power of lock plate through the extension spring to make the volume reduce, solve the problem that space utilization is low.

In order to achieve the above purpose, the technical scheme of the utility model is as follows: the utility model provides a small car seat back lock, includes first casing, second casing, ratchet, pawl, lock piece and extension spring, first casing with be provided with first pivotal axis and second pivotal axis between the second casing, the ratchet with the lock piece rotates to be installed on the first pivotal axis, the pawl includes pawl main part and latch hook, the pawl main part rotates to be installed on the second pivotal axis, the ratchet with the pawl main part meshes mutually, one side of lock piece supports and leans on the side of pawl main part, the lock piece is kept away from the side of pawl main part is provided with the kink, the first end of extension spring with the kink is connected, the second end of extension spring with first casing is connected.

Preferably, the first housing and the second housing are plate bodies, and the first housing and the second housing are connected through a first pivot shaft and a second pivot shaft.

Preferably, the pawl main body, the ratchet wheel and the lock piece are disposed between the first housing and the second housing.

Preferably, the first housing is provided with a locking area at a region close to the locking hook, and the locking area is matched with the locking hook to lock the automobile seat.

Preferably, the locking region is covered with a buffer sleeve.

Preferably, the side edge of the first housing, which is far away from the locking area, is connected with an extension portion, the extension portion extends from the edge of the first housing to the direction far away from the first housing, a through hole is formed in the extension portion, and the second end of the tension spring is sleeved on the through hole.

Preferably, the edges of two sides of the bending part are provided with grooves, and the first end of the tension spring is sleeved on the grooves.

Preferably, the side edges of the ratchet wheel are engaged with the side edges of the pawl body.

Preferably, the pawl main body is connected with a torsion spring, and the torsion spring is sleeved on the second pivot shaft.

The utility model has the advantages that: the utility model provides a small car seat back lock, it provides the locking power of lock plate through the extension spring to make the volume reduce, improved space utilization, simple structure moreover, the cost is lower.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic front view of the ratchet, pawl and locking plate of the present invention;

FIG. 3 is a schematic view of the back structure of the ratchet, pawl and locking plate of the present invention;

wherein: 1. the ratchet wheel locking device comprises a first shell, 2, a second shell, 3, a ratchet wheel, 4, a locking piece, 5, a pawl, 501, a pawl main body, 502, a locking hook, 6, a first pivot shaft, 7, a second pivot shaft, 8, a tension spring, 9, a bent part, 10, a groove, 11, an extending part, 12, a through hole, 13, a locking area, 14, a buffer sleeve and 15 a torsion spring.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 3, the present embodiment provides a small-sized car seat back lock including a first housing 1, a second housing 2, a ratchet 3, a pawl 5, a locking piece 4, and a tension spring 8.

The first shell 1 and the second shell 2 are plate bodies and are arranged oppositely, and a space is reserved between the first shell and the second shell. A first pivot shaft 6 and a second pivot shaft 7 are provided between the first housing 1 and the second housing 2, and the first housing 1 and the second housing 2 are connected by the first pivot shaft 6 and the second pivot shaft 7.

The ratchet 3 and the locking piece 4 are both sheet-shaped plate bodies and are arranged between the first shell 1 and the second shell 2. The plate bodies of the ratchet wheel 3 and the locking piece 4 are rotatably mounted on the first pivot shaft 6, and the ratchet wheel 3 and the locking piece 4 rotate around the axis of the first pivot shaft 6. The pawl 5 includes a pawl main body 501 and a latch hook 502, wherein the pawl main body 501 is between the first housing 1 and the second housing 2, the latch hook is below the first housing 1 and the second housing 2, and a latch slot is provided between the pawl main body 501 and the latch hook 502. The pawl body 501 is rotatably mounted on the second pivot shaft 7, and the pawl body 501 rotates about the axis of the second pivot shaft 7.

The ratchet wheel 3 is located on the right side of the pawl body 501. The ratchet 3 is provided with a recess on the left side and the pawl body 501 is provided with a projection on the right side, and the recess and the projection cooperate when the small-sized car seat back lock locks the back, that is, the ratchet 3 is engaged with the pawl body 501. The ratchet 3 is provided with a hole at the upper right for connecting a transmission rod, and the rotation of the ratchet 3 is controlled by the transmission rod (belonging to the prior art and not shown in the figure).

The function of the locking piece 4 is to provide a locking force. The left side of the locking piece 4 abuts against the right side of the pawl main body 501. The side of the locking piece 4 away from the pawl body 501 is provided with a bent portion 9 bent in the direction approaching the ratchet 3. The edges of the two sides of the bending part 9 are provided with grooves 10,

the first housing 1 is provided with a locking area 13 which cooperates with the locking hook 502 to lock the vehicle seat in an area close to the locking hook 502, i.e., a lower side of the first housing 1. The locking portion 13 and the locking hook 502 clamp a crossbar of a car seat back to lock the seat back (which belongs to the prior art and is not described in detail herein). The locking region 13 is covered with a buffer 14 for reducing a buffering force, and the buffer 14 can reduce noise.

The side of the first housing 1 remote from the locking area 13, i.e. the upper side of the first housing 1, is connected with an extension 11. The extension 11 extends upward of the first housing 1 from the edge of the first housing 1. The extension 11 is provided with a through hole 12.

The first end of extension spring 8 is connected with kink 9, and the second end of extension spring 8 is connected with first casing 1. In this embodiment, the first end of the tension spring 8 is preferably sleeved on the groove 10, and the second end of the tension spring 8 is sleeved on the through hole 12, so as to improve the connection stability.

The torsion spring 15 is connected to the pawl main body 501, the torsion spring 15 is sleeved on the second pivot shaft 7, and the torsion spring 15 is used for providing a driving force for clockwise rotation of the pawl 5 during unlocking.

When the small-size automobile seat back lock is in a locked state, the concave part of the ratchet wheel 3 is matched with the convex part of the pawl 5, namely the ratchet wheel 3 is meshed with the pawl main body 501, the left side of the locking piece 4 abuts against the right side of the pawl main body 501, the tension spring 8 is in a stretching state, and the locking hook 502 is matched with the first shell 1 and the second shell 2 to clamp a cross bar of an automobile seat back.

During the unblock, rotate ratchet 3, make ratchet 3's depressed part and bellying separation, the right side of ratchet 3 makes locking piece 4 rotate through the kink 9 that leans on locking piece 4 simultaneously to make locking piece 4 cancel the locking effect to pawl 5.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.

Claims

1. The car seat back lock with small volume is characterized by comprising a first shell (1), a second shell (2), a ratchet wheel (3), a pawl (5), a locking piece (4) and a tension spring (8), wherein a first pivot shaft (6) and a second pivot shaft (7) are arranged between the first shell (1) and the second shell (2), the ratchet wheel (3) and the locking piece (4) are rotatably installed on the first pivot shaft (6), the pawl (5) comprises a pawl main body (501) and a locking hook (502), the pawl main body (501) is rotatably installed on the second pivot shaft (7), the ratchet wheel (3) is meshed with the pawl main body (501), one side of the locking piece (4) is abutted against the side of the pawl main body (501), and a bent part (9) is arranged on the side of the pawl piece (4) far away from the pawl main body (501), the first end of extension spring (8) with kink (9) are connected, the second end of extension spring (8) with first casing (1) are connected.

2. A low-profile vehicle seat back lock according to claim 1, wherein the first housing (1) and the second housing (2) are plate bodies, and the first housing (1) and the second housing (2) are connected by a first pivot shaft (6) and a second pivot shaft (7).

3. A small-sized car seat back lock according to claim 1, wherein the pawl body (501), ratchet wheel (3) and locking piece (4) are all disposed between the first housing (1) and the second housing (2).

4. A low-profile vehicle seat back lock according to claim 1, characterized in that the first housing (1) is provided with a locking area (13) in the area close to the locking hook (502) for locking the vehicle seat in cooperation with the locking hook (502).

5. A low-profile vehicle seat back lock according to claim 4, wherein the locking region (13) is coated with a damping sleeve (14).

6. The car seat back lock with small volume according to claim 4, characterized in that an extension (11) is connected to a side of the first shell (1) far away from the locking region (13), the extension (11) extends from an edge of the first shell (1) to a direction far away from the first shell (1), a through hole (12) is provided on the extension (11), and the second end of the tension spring (8) is sleeved on the through hole (12).

7. The small-sized automobile seat back lock according to claim 6, wherein two side edges of the bending part (9) are provided with grooves (10), and the first end of the tension spring (8) is sleeved on the grooves (10).

8. A low profile vehicle seat back lock according to claim 1, wherein the ratchet wheel (3) has sides which engage with the sides of the pawl body (501).

9. A small-sized car seat back lock according to claim 1, wherein a torsion spring (15) is connected to the pawl body (501), and the torsion spring (15) is sleeved on the second pivot shaft (7).