CN210363481U

CN210363481U - Low-noise automobile seat backrest lock

Info

Publication number: CN210363481U
Application number: CN201921045115.7U
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: 2020-04-21
Anticipated expiration: 2029-07-05

Abstract

The utility model discloses a low-noise automobile seat backrest lock, which comprises a lock shell, a lock cover, a pawl, a ratchet wheel, a locking sheet and a rubber buffer piece, wherein an installation cavity is formed between the lock shell and the lock cover, the pawl comprises a pawl main body and a locking hook, the pawl main body, the ratchet wheel and the locking sheet are rotationally installed in the installation cavity, and the ratchet wheel is meshed with the pawl main body; the position department that the locking closure is close to the latch hook is provided with the locking district with latch hook cooperation locking car seat, and the groove is worn to be equipped with in the position department that the locking closure is close to the locking district, and the first end of rubber bolster is provided with the fastener, and the second end of rubber bolster is provided with the draw-in groove, and the first end of rubber bolster passes through groove and fastener and draw-in groove matching, rubber bolster cladding locking district. The utility model provides a car seat back lock of low noise can noise reduction through the rubber bolster, and it is not the form that adopts the package to mould moreover and carries out the noise reduction to improve the installation effectiveness, can not cause the influence to the japanning moreover.

Description

Low-noise automobile seat backrest lock

Technical Field

The utility model relates to a back lock especially relates to a car seat back lock of low noise.

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. The backrest lock is entirely made of metal material, and certain noise can be generated in the use process. As the demands of customers for sound inside automobiles become more stringent, the silencing of the back locks becomes more important. The existing noise elimination mode is to make full plastic-coating on the backrest lock. The backrest lock fully covered with plastic has low noise in working and produces little sound in the driving process. However, the efficiency of the plastic coating process of the backrest lock is low, and the heat treatment is required in the plastic coating process, which affects the painting of the backrest lock.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a car seat back lock of low noise, it is not the form that adopts the package to mould carries out the noise reduction, and the problem of inefficiency and influential to the japanning when having solved current car seat back and locking and assembling the relevant device of noise reduction.

In order to achieve the above purpose, the technical scheme of the utility model is as follows: a low-noise automobile seat backrest lock comprises a lock shell, a lock cover, a pawl, a ratchet wheel, a locking piece and a rubber buffer piece, wherein an installation cavity is formed between the lock shell and the lock cover, the pawl comprises a pawl main body and a locking hook, the pawl main body, the ratchet wheel and the locking piece are rotatably installed in the installation cavity, and the ratchet wheel is meshed with the pawl main body; the utility model discloses a rubber buffer spare, including lock cover, latch hook, rubber buffer spare, first end, the latch cover is close to the position department of latch hook be provided with the locking district of latch hook cooperation locking car seat, the lock cover is being close to the position department in locking district wears to be equipped with wears to wear the groove, the first end of rubber buffer spare is provided with the fastener, the second end of rubber buffer spare is provided with the draw-in groove, the first end of rubber buffer spare is passed wear the groove just the fastener with the draw-in groove matches, rubber buffer.

Preferably, a recessed area is arranged in the middle of the lower side of the lock cover, and the upper end surface of the recessed area is the locking area.

Preferably, the lock case and the lock cover are connected through a first pivot shaft and a second pivot shaft, the ratchet wheel and the locking piece are rotatably mounted on the first pivot shaft, and the pawl is rotatably mounted on the second pivot shaft.

Preferably, the ratchet wheel is provided with a first torsion spring, the first torsion spring is sleeved on the first pivot shaft, the pawl is provided with a second torsion spring, and the second torsion spring is sleeved on the second pivot shaft.

Preferably, a boss is arranged on the pawl main body, and one end of the locking piece abuts against the side edge of the boss.

Preferably, the side edges of the ratchet wheel and the side edges of the pawl body are fitted to each other.

Preferably, a hook groove is formed between the lock hook and the pawl main body, and the lock hook is located outside the installation cavity.

Preferably, the lock shell and the lock cover are adaptive in shape, and a plurality of reinforcing ribs are arranged inside the lock shell and the lock cover.

Preferably, the lock cover inner wall is provided with a boss at a position close to the pawl main body.

The utility model has the advantages that: the utility model provides a car seat back lock of low noise can noise reduction through the rubber bolster, and it is not the form that adopts the package to mould moreover and carries out the noise reduction to improve the installation effectiveness, can not cause the influence to the japanning moreover.

Drawings

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

fig. 2 is a schematic front structural view of the internal structure of the present invention;

fig. 3 is a schematic back structure view of the internal structure of the present invention;

fig. 4 is a schematic structural view of the lock cover of the present invention;

FIG. 5 is a schematic structural view of the rubber buffer of the present invention;

wherein: 1. the locking mechanism comprises a lock shell, 2 parts of a lock cover, 3 parts of a pawl, 301 parts of a pawl main body, 302 parts of a locking hook, 4 parts of a ratchet wheel, 5 parts of a locking sheet, 6 parts of a rubber buffer part, 601 parts of a clamping part, 602 parts of a clamping groove, 7 parts of a locking area, 8 parts of a through groove, 9 parts of a first pivot shaft, 10 parts of a second pivot shaft, 11 parts of a first torsion spring, 12 parts of a second torsion spring, 13 parts of a boss, 14 parts of a hook groove and 15 parts of a boss.

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 "middle", "upper", "lower", "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 and operated in a specific orientation, 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 low-noise car seat back lock, which includes a lock case 1, a lock cover 2, a pawl 3, a ratchet 4, a locking piece 5 and a rubber buffer 6.

The lock shell 1 and the lock cover 2 are adapted in shape. A mounting cavity is formed between the lock shell 1 and the lock cover 2 and is used for accommodating the pawl 3, the ratchet wheel 4 and the locking piece 5. The lock shell 1 and the lock cover 2 are internally provided with a plurality of reinforcing ribs for improving the strength of the lock shell 1 and the lock cover 2, so that the lock shell 1 and the lock cover 2 are prevented from being damaged in the using process. The lock shell 1 and the lock cover 2 are connected through a first pivot shaft 9 and a second pivot shaft 10, main bodies of the first pivot shaft 9 and the second pivot shaft 10 are arranged in the installation cavity, cover bodies are arranged at two ends of the first pivot shaft 9 and the second pivot shaft 10, and the cover bodies at the two ends are attached to the outer side surfaces of the lock shell 1 and the lock cover 2, so that the lock shell 1 and the lock cover 2 are connected.

The ratchet wheel 3, the ratchet wheel 4 and the locking sheet 5 are plate bodies. The pawl 3 comprises a pawl main body 301 and a lock hook 302, a hook groove 14 is arranged between the lock hook 302 and the pawl main body 301, and the lock hook 302 is positioned outside the installation cavity. The pawl body 301, ratchet 4 and locking piece 5 are rotatably mounted in the mounting cavity, wherein the ratchet 4 and locking piece 5 are rotatably mounted on the first pivot shaft 9 and the pawl 3 is rotatably mounted on the second pivot shaft 10. A first torsion spring 11 is arranged on the ratchet wheel 4, the first torsion spring 11 is sleeved on the first pivot shaft 9, a second torsion spring 12 is arranged on the pawl 3, and the second torsion spring 12 is sleeved on the second pivot shaft 10.

The ratchet wheel 4 is tightly attached to the plate surface of the locking sheet 5. The side of the ratchet wheel 4 is engaged with the side of the pawl body 301.

The surface of the pawl main body 301 is provided with a boss 13, and one end of the locking piece 5 is abutted against the side edge of the boss 13. The boss 13 is shaped as a rectangular parallelepiped and is obliquely disposed, and the edge of the boss 13 is provided with a chamfer. One end of the locking piece 5 abuts against one side surface of the boss 13, thereby providing a locking force. The side of the locking piece 5 far away from the boss 13 is provided with a bending part.

The latch hook 302 completes the locking by clamping the crossbar of the car seat together with the latch cover 2. The clamping of the crossbar to the car seat is prior art and is not described in detail here. When needs unblock, rotate ratchet 4, make pawl main part 301 break away from with the part of ratchet 4 meshing, ratchet 4 supports the kink that leans on locking piece 5 simultaneously, makes locking piece 5 rotate to the side that makes locking piece 5 does not support with boss 13 and leans on, and locking piece 5 cancels the locking function of pawl 3, and pawl 3 rotates under the effect of second torsional spring 13, accomplishes the unblock.

The upper sides of the lock housing 1 and the lock cover 2 are provided with openings, the upper side of the ratchet 4 is provided with an extension extending outwards, the extension passes through the openings, and the extension is provided with a through hole for connecting a transmission rod.

As shown in fig. 4, the lock cover 2 is provided with a locking area 7 which cooperates with the lock hook 302 to lock the car seat at a position close to the lock hook 302. The middle of the lower side of the lock cover 2 is provided with a recessed area, the lock hook 302 is arranged in the recessed area, and the upper end surface of the recessed area is a locking area 7. The underside of the lock cover 2 and the lock housing 1 are open to facilitate passage of the shackle 302. The inner wall of the lock cover 2 is provided with a boss 15 at a position close to the pawl main body 301, and the boss 15 is provided for eliminating a gap between the lock cover 2 and the pawl main body 301 and preventing the pawl 3 from shaking. The locking cover 2 is pierced with a through-groove 8 at a position near the locking zone 7 for the rubber buffer 6 to pass through.

Referring to fig. 5, the rubber buffer 6 is a strip made of rubber material, and due to the material property of rubber, the rubber buffer 6 is easy to deform, so that the rubber buffer 6 can be conveniently installed on the locking cover 2. The first end of the rubber buffer 6 is provided with a snap 601, and the width of the snap 601 is larger than that of the rubber buffer 6, so as to form a step with the main body of the rubber buffer 6. The second end of the rubber buffer 6 is provided with a snap groove 602.

When the rubber bumper 6 is mounted on the locking cap 2, the body of the rubber bumper 6 covers the locking region 7. The second end of the rubber buffer 6 is attached to the outer surface of the locking cap 2. The first end of the rubber buffer 6 starts from the inside of the locking cover 1 and penetrates through the through groove 8, the clamping piece 601 at the first end of the rubber buffer 6 also penetrates through the through groove to be matched with the clamping groove 302, namely the clamping piece 601 penetrates through the clamping groove 602, and the step part formed between the clamping piece 601 and the rubber buffer 6 clamps the second end of the rubber buffer 6.

Due to the effect of the rubber buffer piece 6, when the low-noise automobile seat backrest lock locks the backrest, the cross bar of the backrest cannot directly collide with the lock cover 2 to generate metal noise, and the cross bar is good in fixing effect under the filling effect of the rubber buffer piece 6 and cannot move, so that the cross bar and the lock hook 302 cannot generate metal noise generated by collision.

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 low-noise automobile seat backrest lock is characterized by comprising a lock shell (1), a lock cover (2), a pawl (3), a ratchet wheel (4), a locking piece (5) and a rubber buffer piece (6), wherein an installation cavity is formed between the lock shell (1) and the lock cover (2), the pawl (3) comprises a pawl main body (301) and a locking hook (302), the pawl main body (301), the ratchet wheel (4) and the locking piece (5) are rotatably installed in the installation cavity, and the ratchet wheel (4) and the pawl main body (301) are meshed with each other; locking closure (2) are close to the position department of latch hook (302) be provided with latch hook (302) cooperation locking car seat's locking district (7), locking closure (2) are being close to wear to be equipped with in the position department of locking district (7) and wear to be equipped with groove (8), the first end of rubber bolster (6) is provided with fastener (601), the second end of rubber bolster (6) is provided with draw-in groove (602), the first end of rubber bolster (6) is passed wear groove (8) just fastener (601) with draw-in groove (602) match, rubber bolster (6) cladding locking district (7).

2. A low noise automobile seat back lock according to claim 1, wherein a lower middle portion of the lock cover (2) is provided with a recessed area, and an upper end surface of the recessed area is the locking area (7).

3. A low noise automobile seat back lock according to claim 1, wherein the lock housing (1) and lock cover (2) are connected by a first pivot shaft (9) and a second pivot shaft (10), the ratchet wheel (4) and locking piece (5) are rotatably mounted on the first pivot shaft (9), and the pawl (3) is rotatably mounted on the second pivot shaft (10).

4. The car seat back lock with low noise according to claim 3, wherein the ratchet wheel (4) is provided with a first torsion spring (11), the first torsion spring (11) is sleeved on the first pivot shaft (9), the pawl (3) is provided with a second torsion spring (12), and the second torsion spring (12) is sleeved on the second pivot shaft (10).

5. A low noise automobile seat back lock according to claim 1, wherein a boss (13) is provided on the pawl main body (301), and one end of the locking piece (5) abuts against a side edge of the boss (13).

6. A low noise automotive seat back lock according to claim 1, characterized in that the side of the ratchet wheel (4) is interfitted with the side of the pawl body (301).

7. A low noise automobile seat back lock according to claim 1, wherein a hook groove (14) is provided between the latch hook (302) and the pawl body (301), the latch hook (302) being located outside the mounting cavity.

8. A low noise automobile seat back lock according to claim 1, wherein the lock case (1) and the lock cover (2) are adapted in shape, and a plurality of reinforcing ribs are provided inside the lock case (1) and the lock cover (2).

9. A low noise automobile seat back lock according to claim 1, wherein the inner wall of the lock cover (2) is provided with a boss (15) at a position close to the pawl body (301).