CN209833430U

CN209833430U - Automobile seat backrest lock

Info

Publication number: CN209833430U
Application number: CN201920291657.6U
Authority: CN
Inventors: 王军喜; 汤小生
Original assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Geely Automobile Research Institute Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Geely Automobile Research Institute Co Ltd
Priority date: 2019-03-07
Filing date: 2019-03-07
Publication date: 2019-12-24
Anticipated expiration: 2029-03-07

Abstract

The utility model provides a car seat back lock belongs to automobile parts technical field. It has solved the big and heavy problem of weight of installation space that current back lock occupied. This car seat back lock is including locking frame, ratchet, pawl, first location axle and second location axle, and the ratchet articulates in the locking frame through first location axle, and the pawl articulates in the locking frame through the second location axle, and ratchet and pawl cooperate, and the one end of first location axle and second location axle all has the fixed part that is used for linking firmly mutually with car seat, and the fixed part is located outside the locking frame. The lock for the automobile seat backrest has the advantages of small occupied installation space and light weight.

Description

Automobile seat backrest lock

Technical Field

The utility model belongs to the technical field of automobile parts, a car seat back lock is related to.

Background

With the development of society and the improvement of living standard of people, automobiles become more and more important transportation tools for people to go out. Automotive vehicles include seats having backrests, and for most automotive users, it is desirable for the seat to have a fold-over function, which involves a vehicle seat backrest lock.

A conventional lock for a seat back of an automobile, for example, a lock for a seat back of an automobile disclosed in chinese patent literature [ application No.: 200820137905.3, respectively; authorization notice number: CN201287649Y ], which comprises a lock frame, a lock core, lock core rivets, and lock frame rivet sleeves, wherein the lock core is fixed between the two lock frames by the lock core rivets, and the lock frame rivet sleeves are hollow tubes, are located below the lock, and are fixed between the two lock frames; the lock core is composed of a ratchet wheel, a ratchet shaft, a pawl shaft, a ratchet return spring, a pawl position-dependent spring and a lock shell, the ratchet wheel and the pawl are respectively connected to the lock shell through the ratchet shaft and the pawl shaft, the ratchet return spring and the pawl return spring are respectively wound and installed on the ratchet shaft and the pawl shaft, one end of the ratchet return spring is buckled on the ratchet wheel, and the other end of the ratchet return spring is buckled on the lock shell; one end of the pawl return spring is buckled at the tail end of the pawl, and the other end of the pawl return spring is buckled on the lock shell.

The automobile seat backrest lock with the structure passes through the lock frame rivet sleeve through the bolt to fix the backrest lock on the automobile seat, namely, the lock frame is required to be provided with a pair of installation spaces of the lock frame rivet sleeve besides the installation spaces of the ratchet shaft and the pawl shaft, so that the whole volume of the lock frame is large, the lock frame is required to occupy a large installation space, the structure is not compact enough, and the weight is heavy.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a car seat back lock, the technical problem of solution makes the installation space that the back lock occupied little, light in weight.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a car seat back lock, includes lock frame, ratchet and pawl, its characterized in that, back lock still includes first location axle and second location axle, the ratchet articulates in the lock frame through first location axle, the pawl articulates in the lock frame through second location axle, ratchet and pawl cooperate, the one end of first location axle and second location axle all has the fixed part that is used for linking firmly mutually with car seat, the fixed part is located outside the lock frame. The first positioning shaft and the second positioning shaft of the backrest lock are respectively provided with a fixing part, the backrest lock is directly and fixedly connected with the automobile seat through the fixing parts, namely, fixing holes for inserting fasteners such as bolts and the like do not need to be formed in the lock frame, the lock frame can be made to be correspondingly small, namely, the overall structure of the backrest lock can be correspondingly small, and the reduction of the installation space is small; through with original articulated shaft and fastener integration to the location epaxial, reduce spare part, make the lock frame can be corresponding make a little simultaneously, make the holistic light in weight of this back lock, be favorable to realizing the lightweight of car.

In foretell car seat back lock, the lateral wall of fixed part has the external screw thread, perhaps the inside wall of fixed part has the internal thread, perhaps the joint constant head tank has on the fixed part. The fixed part can be fixedly connected with the automobile seat through a mode of fixedly connecting with threads, and can also be fixedly connected with the automobile seat through a mode of fixedly connecting with a joint, so that the fixed part is convenient to fixedly connect.

In foretell car seat back lock, all have the bellying of outside protrusion setting on the lateral wall of first location axle and second location axle, the external diameter of bellying is greater than the external diameter of first location axle and the rest of second location axle, through the bellying makes first location axle and second location axle axial positioning in the lock frame. This kind of structure makes first location axle and second location axle can the rotation in circumference, but can not axial displacement, can make back lock and car seat link firmly mutually through rotatory first location axle and second location axle, and it is convenient to link firmly.

In the above-mentioned car seat back lock, be equipped with gasket and dog in the lock frame, gasket and dog are located the both ends of bellying respectively and make first locating shaft and second locating shaft axial positioning in the lock frame. The positioning effect is good, and the positioning firmness degree is high.

In the automobile seat backrest lock, the backrest lock further comprises an unlocking rod and an elastic piece, one end of the unlocking rod is connected with the pawl, and the elastic piece is connected with the ratchet wheel and the pawl. The unlocking rod realizes the unlocking of the ratchet wheel and the pawl, and the elastic piece realizes the linkage of the ratchet wheel and the pawl.

In the above-mentioned car seat back lock, the elastic component is the extension spring, the front end of extension spring links to each other with the ratchet, the rear end of extension spring links to each other with the pawl. The structure is simple, and the elastic part can also be a torsion spring.

In the automobile seat backrest lock, one side of the pawl is provided with the connecting portion which is arranged in a protruding mode, the connecting portion is provided with the connecting hole which penetrates through the connecting portion, one end of the unlocking rod is bent to form the unlocking portion, the unlocking portion is embedded into the connecting hole to enable the unlocking rod to be connected with the pawl, and the front end of the elastic piece is hung on the unlocking portion. The structure can reduce the space at the joint of the unlocking rod and the pawl, thereby reducing the installation space of the backrest lock; the unlocking rod is a hard rod, and the pawl and the ratchet wheel can be rotated by pressing the unlocking rod and matching an elastic piece such as a tension spring, so that the unlocking function is realized.

In the above-described vehicle seat back lock, the front end of the elastic member is located between the lock release lever and the connecting portion. The structure ensures that the elastic piece is not easy to fall off like a tension spring and has good stability.

In the above-mentioned car seat back lock, one side of the ratchet wheel has a protruding attachment portion, the attachment portion has a recessed groove, the rear end of the elastic member is attached to the attachment portion, and the rear end of the elastic member is embedded into the groove. The structure ensures that the elastic piece can not fall off after being hung and leaned like a tension spring and has good stability.

In the above-mentioned car seat back lock, the recessed holding tank that sets up is had on the inside wall of lock frame, the part that the unblock pole stretched into in the lock frame is located the holding tank. The setting of holding tank makes the unblock pole stretch to and can not take place to touch with other spare parts in the lock frame, the rational utilization space.

In the above-mentioned car seat back lock, the first positioning shaft and the second positioning shaft are arranged on the same horizontal plane. The structure enables the matching effect of the ratchet wheel and the pawl to be good, and simultaneously enables the fixing part to be better fixedly connected with the automobile seat.

Compared with the prior art, the utility model provides a car seat back tool to lock has following advantage:

1. this backrest lock's first location axle and second location are epaxial all to have the fixed part, make this backrest lock directly link to each other with car seat through the fixed part, need not to open again on the lock frame promptly and supply the fastener like bolt etc. male fixed orifices, the lock frame can make corresponding a little, and the overall structure of backrest lock promptly can be corresponding a little, and it is little to reduce installation space.

2. This back lock is with original articulated shaft and the integrated location axle of fastener, reduces spare part, makes the lock frame can make corresponding little simultaneously, makes the holistic light in weight of this back lock, is favorable to realizing the lightweight of car.

Drawings

Fig. 1 is a sectional view of the entire structure of a first embodiment of the lock for a seat back of an automobile.

Fig. 2 is a partial structural schematic view of a first embodiment of the vehicle seat back lock.

In the figure, 1, a lock frame; 2. a ratchet wheel; 21. a hanging part; 22. a groove; 3. a pawl; 31. a connecting portion; 32. connecting holes; 4. an unlocking lever; 41. an unlocking portion; 5. a first positioning shaft; 6. a second positioning shaft; 7. an elastic member; 8. a fixed part; 9. a boss portion; 10. a gasket; 11. a stopper; 12. and (6) accommodating the tank.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1 and 2, the car seat back lock includes a lock frame 1, a ratchet 2, a pawl 3, an unlocking lever 4, a first positioning shaft 5, a second positioning shaft 6, and an elastic member 7.

All have the bellying 9 of outside protrusion setting on the lateral wall of first locating shaft 5 and second locating shaft 6, the external diameter of bellying 9 is greater than the external diameter of first locating shaft 5 and the other parts of second locating shaft 6, be equipped with gasket 10 and dog 11 in the lock frame 1, gasket 10 and dog 11 are located the both ends of bellying 9 respectively and make first locating shaft 5 and the 6 axial positioning of second locating shaft in lock frame 1, the same horizontal plane setting of first locating shaft 5 and second locating shaft 6. Ratchet 2 cover is outside the bellying 9 of first location axle 5, and pawl 3 covers outside the bellying 9 of second location axle 6, and ratchet 2 articulates in lock frame 1 through first location axle 5, and pawl 3 articulates in lock frame 1 through second location axle 6, and the one end of first location axle 5 and second location axle 6 all has the fixed part 8 that is used for linking to each other with car seat, and fixed part 8 is located outside lock frame 1, has the external screw thread on the lateral wall of fixed part 8.

The inner side wall of the lock frame 1 is provided with a concave accommodating groove 12, and the part of the unlocking rod 4 extending into the lock frame 1 is positioned in the accommodating groove 12. In this embodiment, the elastic member 7 is a tension spring, and in actual production, the elastic member 7 may be a torsion spring. One side of the pawl 3 is provided with a connecting part 31 which is convexly arranged, the connecting part 31 is provided with a through connecting hole 32, the inner end of the unlocking rod 4 is bent to form an unlocking part 41, the unlocking part 41 is embedded into the connecting hole 32 to enable the unlocking rod 4 to be connected with the pawl 3, the front end of the tension spring is hung on the unlocking part 41, and the front end of the tension spring is positioned between the unlocking rod 4 and the connecting part 31. One side of the ratchet wheel 2 is provided with a convex hanging part 21, the hanging part 21 is provided with a concave groove 22, the rear end of the tension spring is hung on the hanging part 21, and the rear end part of the tension spring is embedded into the groove 22.

Have first lug on the pawl 3, have the second lug on the ratchet 2, first lug and second lug counterbalance are leaned on, make ratchet 2 and 3 looks joints of pawl, when unblanking, press unlocking lever 4, make pawl 3 clockwise rotation, make first lug cross the second lug, under the effect of elastic component 7, ratchet 2 clockwise rotation makes ratchet 2 no longer block up the spring bolt and realize the unblock. The lock bolt of the lock cylinder of the backrest lock is realized by the way that the lock bolt impacts the second lug to enable the second lug to pass through the first lug and enable the ratchet 2 and the pawl 3 to return to the original position.

Example two

The structure and principle of this embodiment are substantially the same as those of the first embodiment, except that in this embodiment, the inner side wall of the fixing portion 8 has an internal thread.

EXAMPLE III

The structure and the principle of this embodiment with embodiment one are the same basically, and the difference lies in, in this embodiment, has the joint constant head tank on the fixed part 8, and the mode that fixed part 8 linked firmly through the joint links firmly on car seat.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the lock frame 1, the ratchet 2, the engaging portion 21, the groove 22, the pawl 3, the connecting portion 31, the connecting hole 32, the unlocking lever 4, the unlocking portion 41, the first positioning shaft 5, the second positioning shaft 6, the elastic member 7, the fixing portion 8, the protruding portion 9, the spacer 10, the stopper 11, the receiving groove 12, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides an automobile seat back lock, includes lock frame (1), ratchet (2) and pawl (3), its characterized in that, back lock still includes first location axle (5) and second location axle (6), ratchet (2) articulate in lock frame (1) through first location axle (5), pawl (3) articulate in lock frame (1) through second location axle (6), ratchet (2) and pawl (3) cooperate, the one end of first location axle (5) and second location axle (6) all has fixed part (8) that are used for linking firmly mutually with automobile seat, fixed part (8) are located outside lock frame (1).

2. The car seat backrest lock according to claim 1, characterized in that the outer side wall of the fixing part (8) is provided with an external thread, or the inner side wall of the fixing part (8) is provided with an internal thread, or the fixing part (8) is provided with a clamping positioning groove.

3. The car seat backrest lock according to claim 1, characterized in that the outer side walls of the first positioning shaft (5) and the second positioning shaft (6) are provided with protrusions (9) protruding outwards, the outer diameter of each protrusion (9) is larger than the outer diameter of the rest of the first positioning shaft (5) and the second positioning shaft (6), and the first positioning shaft (5) and the second positioning shaft (6) are axially positioned in the lock frame (1) through the protrusions (9).

4. The car seat backrest lock according to claim 3, characterized in that a gasket (10) and a stopper (11) are arranged in the lock frame (1), and the gasket (10) and the stopper (11) are respectively arranged at two ends of the boss (9) to axially position the first positioning shaft (5) and the second positioning shaft (6) in the lock frame (1).

5. The car seat back lock according to claim 1 or 2 or 3 or 4, characterized in that the back lock further comprises an unlocking lever (4) and an elastic member (7), wherein one end of the unlocking lever (4) is connected with the pawl (3), and the elastic member (7) is connected with both the ratchet (2) and the pawl (3).

6. The automobile seat backrest lock is characterized in that one side of the pawl (3) is provided with a protruding connecting portion (31), a through connecting hole (32) is formed in the connecting portion (31), one end of the unlocking rod (4) is bent to form an unlocking portion (41), the unlocking portion (41) is embedded into the connecting hole (32) to enable the unlocking rod (4) to be connected with the pawl (3), and the front end of the elastic piece (7) is hung on the unlocking portion (41).

7. The car seat back lock according to claim 6, characterized in that the front end of the elastic member (7) is located between the lock release lever (4) and the connecting portion (31).

8. A car seat back lock according to claim 5, characterized in that one side of the ratchet wheel (2) is provided with a protruding rest portion (21), the rest portion (21) is provided with a recessed groove (22), the rear end of the elastic member (7) is rested on the rest portion (21) and the rear end portion of the elastic member (7) is embedded in the groove (22).

9. The car seat backrest lock according to claim 5, characterized in that the inner side wall of the lock frame (1) is provided with a recessed accommodating groove (12), and the part of the unlocking rod (4) extending into the lock frame (1) is positioned in the accommodating groove (12).

10. The lock for a vehicle seat back according to claim 1, 2, 3 or 4, wherein the first positioning shaft (5) and the second positioning shaft (6) are disposed in the same horizontal plane.