High security retractor
Claims
1.A high-security retractor, the high-security retractor comprising a retractor frame and a reel; the retractor frame comprising two opposite side walls, the two ends of the reel are respectively connected to the The two opposite side walls of the retractor frame are rotatably connected, and the two ends of the reel are respectively protruded from the side walls connected to it, and it is characterized in that both ends of the reel are provided with a reel reed.
2 . The high-security retractor according to claim 1 , wherein the coil springs at both ends of the reel are respectively disposed on the parts of the reel extending from the side walls at both ends. 3 .
3 . The high-security retractor according to claim 1 , wherein the number of the coil springs respectively provided at both ends of the reel is one. 4 .
4 . The high-security retractor according to claim 3 , wherein the coil springs respectively disposed at both ends of the reel are coil springs of the same specification. 5 .
5 . The high-security retractor of claim 1 , wherein the high-security retractor is a self-locking high-security retractor.
6 .The high-security retractor according to claim 5, wherein the self-locking device of the self-locking high-security retractor comprises a ratchet plate, a ratchet wheel, a ratchet plate torsion spring, a clutch, a tower type a spring; there are two ratchet wheels, both of which are coaxially and fixedly connected to the reel, and are respectively arranged at the positions of the reel close to the inner side of the two side walls; the ratchet plate is arranged on the reel away from the seat belt webbing Obliquely below one side of the pull-out end, two ends thereof are respectively connected with the two side walls of the retractor frame in a swingable manner, and one end of the ratchet plate protrudes from the connected side walls; One end of the ratchet plate torsion spring is fixedly connected with the side wall protruding from the ratchet plate, and the other end is fixedly connected with the part of the ratchet plate protruding from the side wall; the clutch is arranged on the two ratchet wheels between one of the side walls of the retractor frame adjacent to the ratchet, and the tower spring is provided between the clutch and the side walls adjacent to the clutch; the clutch Axial bumps and radial bumps are arranged on it, a limit slot is set on the side wall adjacent to the clutch, and the axial bump is located in the limit slot and can slide in it; so When the axial protrusion slides in the limiting groove, the radial protrusion is driven to contact or separate from the ratchet plate, thereby correspondingly separating or contacting the ratchet plate and the ratchet wheel, correspondingly achieving Unlocking or self-locking of the high security retractor.
7.The high-security retractor of claim 6, wherein the self-locking high-security retractor further comprises a handle fixedly connected to the side of the ratchet plate away from the reel.
Summary of instruction
The utility model discloses a high-safety retractor. The high-safety retractor includes a retractor frame and a reel; the retractor frame includes two opposite side walls, and two ends of the reel They are respectively rotatably connected with two opposite side walls of the retractor frame, and the two ends of the reel are respectively protruded from the side walls connected thereto, characterized in that both ends of the reel are A coil spring is provided. The utility model is simple in structure and reasonable in design, and avoids the situation that the safety belt cannot work normally due to the malfunction of the sensitive element which may be caused by the sensitive element still installed on the safety belt which does not need the sensitive element.
Manual
High security retractor
Technical field
The utility model relates to safety belt equipment, in particular to a high-safety retractor.
Background technique
The core component of the seat belt is the seat belt retractor. In the existing seat belt retractor, a coil spring is usually only provided at one end of the reel, and a sensitive element is installed at the other end of the reel. The function of the coil spring is that when the seat belt webbing is pulled out, it will drive the reel to rotate, thereby driving the coil spring connected to it to rotate in the same direction, so that the coil spring is reversely twisted. In order to restore the original state, the coil spring will reversely twist, thereby driving the reel connected to it to rotate in the reverse direction, and winding the seat belt webbing onto the reel, thereby tightening the seat belt webbing. The sensitive element is used to drive the locking mechanism to lock the reel under emergency conditions, so that the safety belt webbing is fixed at a certain length, so as to realize the emergency self-locking of the safety belt. When the seat belt retractor is pulled, the force is mainly concentrated on the side close to the coil spring, so that the force of the seat belt is unbalanced, which in turn causes the webbing and other components close to the coil spring side to wear too much and shorten. The service life of the seat belt is shortened, and the sensitive element is still used on the seat belt retractor that does not need the sensitive element, which may cause the sensitive element to malfunction, thereby causing the seat belt retractor to fail to work normally.
SUMMARY OF THE INVENTION
In view of the deficiencies of the background technology, the technical problem to be solved by the present invention is to provide a retractor with a simple structure and a reasonable design, which can adjust the initial pull-out amount of the seat belt according to different vehicle models and usage environments.
For this reason, the utility model adopts the following scheme to realize:
A high-security retractor includes a retractor frame and a reel; the retractor frame includes two opposite side walls, two ends of the reel are respectively connected to the reel Two opposite side walls of the retractor frame are rotatably connected, and both ends of the reel are respectively protruded from the side walls connected thereto, characterized in that both ends of the reel are provided with coil springs.
The coil springs at both ends of the reel are respectively disposed on the parts of the reel extending from the side walls at both ends.
The number of the coil springs respectively disposed at both ends of the reel is one.
The coil springs respectively disposed at both ends of the reel are coil springs of the same specification.
The high-security retractor is a self-locking high-security retractor.
The self-locking device of the self-locking high-security retractor includes a ratchet plate, a ratchet wheel, a ratchet plate torsion spring, a clutch, and a tower spring; there are two ratchet wheels, both of which are fixedly connected to the reel coaxially, They are respectively arranged at the position of the reel close to the inner side of the two side walls; the ratchet plate is arranged diagonally below the side of the reel away from the pull-out end of the safety belt webbing, and its two ends are respectively connected to the retractor frame. The two side walls are swingably connected, and one end of the ratchet plate protrudes from the side wall to which it is connected; one end of the ratchet plate torsion spring is fixed with the side wall protruding from the ratchet plate The other end is fixedly connected with the part of the ratchet plate protruding from the side wall; the clutch is arranged on one of the two ratchet wheels and one side of the retractor frame adjacent to the ratchet wheel Between the walls, the tower spring is arranged between the clutch and the side wall adjacent to the clutch; the clutch is provided with an axial bump and a radial bump, and the clutch adjacent to the clutch is provided with an axial bump and a radial bump. A limit groove is set on the side wall, and the axial protrusion is located in the limit groove and can slide in the limit groove; when the axial protrusion slides in the limit groove, it drives the radial direction The protrusion contacts or separates from the ratchet plate, thereby correspondingly separating or contacting the ratchet plate from the ratchet wheel, correspondingly realizing the unlocking or self-locking of the high-security retractor.
The self-locking high-security retractor further includes a handle fixedly connected to the side of the ratchet plate away from the reel.
By adopting the above technical scheme, the advantages of the present utility model are: since the coil springs are installed at both ends of the reel, when the safety belt webbing is pulled out or retracted, the coil springs at both ends of the reel are simultaneously stressed, so the two ends of the reel are forced. All of them are stressed at the same time, which effectively disperses the force of the seat belt retractor, so that its wear and tear is reduced, the service life is prolonged, and the installation of sensitive components on the seat belt that does not require sensitive components may cause problems. The seat belt cannot work properly due to the malfunction of the sensitive components.
Description of drawings
The utility model has the following accompanying drawings:
Fig. 1 is the structural representation of the utility model;
Figure 2 is a side view of the utility model.
Detailed ways
As shown in the figure, the high-security retractor disclosed in the present invention includes a retractor frame 1 , a reel 2 , a coil spring 3 , and a self-locking device 4 . The seat belt retractor frame 1 includes two opposite side walls: a first side wall 1-a and a second side wall 1-b, and the two ends of the reel 2 are connected to the first side wall 1-a and the second side wall, respectively 1-b is rotatably connected and protrudes from the side walls connected to it, respectively, the part protruding from the first side wall 1-a is 2-a, and the part protruding from the second side wall 1-b is 2- b. There are a total of 2 coil springs 3, which are respectively arranged on 2-a and 2-b. The self-locking device 4 includes a first ratchet 4-1-a, a second ratchet 4-1-b, a ratchet plate 4-2, a ratchet plate torsion spring 4-3, an unlocking handle 4-4, and a torsion spring fixing rod 4-5 , clutch 4-6, tower spring (not shown). Both the first ratchet wheel 4-1-a and the second ratchet wheel 4-1-b are coaxially and fixedly connected with the reel 2, and the first ratchet wheel 4-1-a is arranged on the reel 2 near the inner side of the side wall 1-a, The second ratchet wheel 4-1-b is arranged on the reel 2 near the inner side of the side wall 1-b; and the outer edges of the ratchet wheels 4-1-a and 4-1-b are circumferentially provided with helical teeth. The inclination of the teeth corresponds to the counterclockwise rotation; and their teeth correspond. The ratchet plate 4-2 is arranged obliquely below the side of the reel 2 away from the pull-out end 5 of the seat belt webbing, and its two ends are respectively connected to the two side walls 1-a and 1-b of the retractor frame 1 in a swingable manner , and one end of the ratchet plate 4-2 protrudes from the second side wall 1-b connected with it, and the protruding part is 4-2-b. A torsion spring fixing rod 4-5 is fixedly installed on the second side wall 1-b at an obliquely lower position close to the ratchet plate extension 4-2-b, and the ratchet plate torsion spring 4-3 is rotatably sleeved on the torsion spring fixing rod On 4-5, one end is fixedly connected with the second side wall 1-b, and the other end is fixedly connected with the part 4-2-b of the ratchet plate 4-2 that protrudes from the second side wall 1-b. The ratchet plate 4-2 swings under the action of the ratchet plate torsion spring 4-3, so that the ratchet plate 4-2 contacts or separates from the two ratchet wheels 4-1-a and 4-1-b. The clutch 4-6 is arranged between the second ratchet 4-1-b and the second side wall 1-b, the tower spring (not shown) is arranged between the clutch 4-6 and the second side wall 1-b, It is used to fit the clutch 4-6 and the second ratchet 4-1-b together to realize their synchronous rotation. The clutch 4-6 is provided with an axial bump 4-7 and a radial bump (not shown), a limiting groove 4-8 is provided on the second side wall 1-b, and the axial bump 4-7 is located on the second side wall 1-b. The limit groove 4-8 can slide in it, and the limit groove 4-8 is used to limit the rotation range of the clutch 4-6; the clutch 4-6 rotates with the rotation of the ratchet 4-1-b, driving the axial direction The protrusions 4-7 slide in the limiting grooves 4-8, thereby driving the radial protrusions (not shown) to contact or separate from the ratchet plate 4-2, thereby correspondingly driving the ratchet plate 4-2 and the two ratchet wheels 4 -1-a and 4-1-b are separated or contacted, correspondingly realizing the unlocking or self-locking of the seat belt retractor. The ratchet plate 4-2 is also fixedly installed with an unlocking handle 4-4 on the side away from the reel 2 .
The working principle of the utility model is as follows: when the safety belt webbing is not pulled out and fully wound on the reel 2, the ratchet plate 4-2 is pushed up to the two ratchet wheels 4-1-a and 4-1 depending on the winding capacity of the webbing. -b separation; when the webbing is pulled out, since the webbing wound on the reel 2 is gradually reduced, the ratchet plate 4-2 is gradually returned under the action of the ratchet plate torsion spring 4-3; at the same time, when the webbing is pulled When out, the reel 2 rotates under the action of the two coil springs 3-a and 3-b, and the clutch 4-6 also rotates under the action of the tower spring 4-7. When the axial bump 4-7 slides to the limit position of the limit groove 4-8, the clutch 4-6 stops rotating. At this time, the radial bump (not shown) (shown) is rotated just enough to contact the ratchet plate 4-2, thereby supporting the ratchet plate 4-2 to be separated from the two ratchet wheels 4-1-a and 4-1-b, and unlocking the webbing during the pull-out process. When the webbing is pulled out to the required length, insert the tongue of the seat belt into the buckle, and the force on the webbing is reduced at this time. Under the reverse torque of the two coil springs 3, the webbing will have a certain length of return. Reel, the reel 2 rotates in the reverse direction, the clutch 4-6 also rotates reversely by a certain angle under the action of the tower spring 4-7, and the radial projection (not shown) also rotates in the reverse direction, thereby The radial projection (not shown) is separated from the ratchet plate 4-2, and at the same time, under the action of the ratchet plate torsion spring 4-3, the ratchet plate 4-2 is automatically returned to the two ratchet wheels 4-1-a and 4-1-b contact to realize automatic locking function. In the present invention, an unlocking handle 4-3 is also installed on the ratchet plate 4-2. When the seat belt retractor is in an automatic locking state, it is only necessary to press the unlocking handle 4-3 to achieve unlocking, and then the webbing can be unlocked. The pull-out length can be adjusted without having to unbuckle the fully retracted seat belt webbing to unlock.
In the structure of the present invention, since coil springs are installed at both ends of the reel, when the safety belt webbing is pulled out or retracted, the coil springs at both ends of the reel are simultaneously stressed, so both ends of the reel are simultaneously stressed , effectively dispersing the force of the seat belt retractor, so that its wear is reduced, the service life is prolonged, and the sensitive element error that may be caused by the installation of the sensitive element on the seat belt that does not require the sensitive element is avoided. The seat belt does not work properly due to the movement.
High Security Retractor
