Double-side locking automobile safety belt retractor

Abstract

The utility model discloses a bilateral locking automobile safety belt retractor, which relates to the technical field of automobile spare parts, and comprises a bilateral locking retractor and a trapezoidal screw rod, the right side of the bilateral locking retractor is provided with a guide port, a safety belt is arranged in the guide port in a penetrating manner, the left side of the bilateral locking retractor is provided with a connecting plate, and the connecting plate is provided with a locking device. An inserting barrel is fixed to the middle of the connecting plate in a penetrating mode, the trapezoidal lead screw is arranged in a bearing at an opening in the top of the inserting barrel in a penetrating mode, a lead screw nut is connected to the outer portion of the trapezoidal lead screw, fixing bases are arranged on the two sides of the lead screw nut, and a first supporting arm is hinged to the middle of each fixing base. According to the double-side locking automobile safety belt retractor, the spring is used for resetting the pawl, the rotating direction of the rotary knob can be locked through mutual meshing of the pawl and the ratchet, and therefore the moving range of the lead screw nut on the trapezoidal lead screw is limited, and meanwhile the angles of the first supporting arm, the second supporting arm and the third supporting arm are limited; loosening of the double-side locking retractor caused by displacement of the limiting frame is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile accessories, in particular to a double-side locking automobile safety belt retractor. BACKGROUND

[0002] The retractor refers to the retractor with emergency locking function, specifically, under normal driving conditions, the safety belt can be freely pulled out, when emergency occurs, the safety belt can be quickly locked to protect the passenger safety. The general retractor includes a rack, a winding drum, an emergency locking device, a vehicle sensing device and a belt sensing device, the general emergency locking device generally only includes a single side tooth block, when collision occurs, the tooth block is locked to enable the safety belt to be quickly locked to protect the passenger safety, the double-side locking automobile safety belt retractor is provided with ratchet locking devices on both sides, namely double-side locking, the double-side locking automobile safety belt retractor can make the rack force more balanced and not easy to twist.

[0003] For example, the utility model discloses a kind of anti-loosening double-side locking automobile safety belt retractors of application No. CN202420910725.3. The utility model compared with the existing ordinary double-side locking automobile safety belt retractor, the force that half tooth screw rod and moving block connecting point receive is relatively slight, prevent the point position connected by screwing from being subjected to the pulling force instantaneously multiple times and the situation of loosening and falling off occurs, substantially improve the stability of double-side locking retractor and automobile assembly. However, only by support plate and limiting plate to bear support force, it can occur fracture or deformation problem to cause the situation that double-side locking automobile safety belt retractor is loosened or even falls off.

[0004] Therefore, in view of the above, the existing structure and deficiency are improved, and a kind of double-side locking automobile safety belt retractor is provided. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of double-side locking automobile safety belt retractor to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of double-side locking automobile safety belt retractor, including double-side locking retractor and trapezoidal screw rod, the right side of the double-side locking retractor is equipped with guide opening, and safety belt is arranged in the inside of guide opening, the left side of the double-side locking retractor is provided with connecting plate, and the middle part of connecting plate is fixed with insertion cylinder and is penetrated, the trapezoidal screw rod is arranged in the bearing of insertion cylinder top opening, and the outside of trapezoidal screw rod is connected with screw nut, the both sides of screw nut are provided with fixed seat, and the middle part of fixed seat is hinged with support arm one, the other end of support arm one is hinged with support arm two, and the end of support arm two away from the vertical central axis of trapezoidal screw rod is hinged with limiting frame, the inside of limiting frame is also hinged with support arm three.

[0007] Further, the trapezoidal screw is rotationally connected with the insertion tube, and a knob is arranged at one end of the trapezoidal screw away from the insertion tube.

[0008] Further, a plurality of ratchets are arranged around the outside of the knob, and a pawl is arranged between the ratchets.

[0009] Further, a fixed ring frame is fixed to the top of the connecting plate, and a pawl is rotationally connected with the fixed ring frame through a rotating shaft in a groove in the inner side of the fixed ring frame.

[0010] Further, a spring is connected to the outer side of the pawl, and the other end of the spring is fixedly connected with the fixed ring frame.

[0011] Further, the support arm two and the support arm three are parallel to each other, and two of the support arm one, the support arm two, the limiting frame and the support arm three are arranged.

[0012] Further, one end of the support arm two away from the limiting frame is rotationally connected with the insertion tube, and one end of the support arm three away from the limiting frame is rotationally connected with the insertion tube.

[0013] The utility model provides a kind of double-side locking automobile safety belt retractor, with the following beneficial effects:

[0014] 1, the utility model discloses a knob is twisted manually to make trapezoidal screw rotate, let fixed seat follow screw nut and move upwards, so that the angle of support arm one slowly changes, to drive support arm two and support arm three rotation, so that limiting frame is adjusted to the height required, i.e.

[0015] 2, the utility model discloses spring is used for the reset of pawl, the rotation direction of knob can be locked by the mutual engagement of pawl and ratchet, to limit the movement range of screw nut on trapezoidal screw, the angle of support arm one, support arm two and support arm three is limited simultaneously, avoid that the displacement of limiting frame causes double-side locking retractor loose. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic diagram of the utility model double-side locking automobile safety belt retractor;

[0017] Figure 2 It is the insertion tube sectional structure schematic diagram of the utility model double-side locking automobile safety belt retractor;

[0018] Figure 3 It is the double-side locking retractor overhead perspective structure schematic diagram of the utility model double-side locking automobile safety belt retractor.

[0019] In the figure: 1, double-sided locking retractor; 2, guide port; 3, safety belt; 4, connecting plate; 5, insertion cylinder; 6, trapezoidal screw rod; 7, knob; 8, ratchet; 9, fixed ring frame; 10, rotating shaft; 11, pawl; 12, spring; 13, screw nut; 14, fixed seat; 15, support arm one; 16, support arm two; 17, limiting frame; 18, support arm three. DETAILED DESCRIPTION

[0020] The embodiments of the present application will be further described in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0021] As shown in Figure 1 and Figure 2 , a double-sided locking automobile safety belt retractor, comprising a double-sided locking retractor 1 and a trapezoidal screw rod 6, the right side of the double-sided locking retractor 1 is provided with a guide port 2, and the inside of the guide port 2 is provided with a safety belt 3, the left side of the double-sided locking retractor 1 is provided with a connecting plate 4, and the middle part of the connecting plate 4 is provided with an insertion cylinder 5, the trapezoidal screw rod 6 is arranged in the bearing at the top opening of the insertion cylinder 5, and the outside of the trapezoidal screw rod 6 is connected with a screw nut 13, the two sides of the screw nut 13 are provided with a fixed seat 14, and the middle part of the fixed seat 14 is hingedly connected with a support arm one 15, the other end of the support arm one 15 is hingedly connected with a support arm two 16, and the end of the support arm two 16 away from the vertical central axis of the trapezoidal screw rod 6 is hingedly connected with a limiting frame 17, the inside of the limiting frame 17 is also hingedly connected with a support arm three 18, the support arm two 16 and the support arm three 18 are parallel to each other, and the support arm one 15, the support arm two 16, the limiting frame 17 and the support arm three 18 are each provided with two, the end of the support arm two 16 away from the limiting frame 17 is rotatably connected with the insertion cylinder 5, and the end of the support arm three 18 away from the limiting frame 17 is rotatably connected with the insertion cylinder 5.

[0022] The specific operation is as follows: by manually rotating the knob 7, the trapezoidal screw rod 6 is rotated, the fixed seat 14 is moved upward with the screw nut 13, the angle of the support arm one 15 is slowly changed, and the support arm two 16 and the support arm three 18 are driven to rotate, so that the limiting frame 17 is adjusted to the required height, that is, the connecting plate 4 and the limiting frame 17 are respectively positioned upward and downward, so that the double-sided locking retractor 1 is not easy to be separated from the mounting bracket after being connected, and effective and stable installation is realized.

[0023] As shown in Figure 3As shown, the trapezoidal screw rod 6 is rotatably connected with the insertion sleeve 5, and the trapezoidal screw rod 6 is provided with a knob 7 at the end away from the insertion sleeve 5, the outer periphery of the knob 7 is provided with a plurality of ratchets 8, and the ratchets 8 are provided with a pawl 11, the top of the connecting plate 4 is fixedly provided with a fixed ring frame 9, the pawl 11 is connected with the fixed ring frame 9 through a rotating shaft 10 in the groove on the inner side of the fixed ring frame 9, the outer side of the pawl 11 is connected with a spring 12, and the other end of the spring 12 is fixedly connected with the fixed ring frame 9.

[0024] Specific operation is as follows, the spring 12 is used for resetting the pawl 11, the rotation direction of the knob 7 is locked through the mutual engagement of the pawl 11 and the ratchet 8, thereby limiting the movement range of the screw nut 13 on the trapezoidal screw rod 6, and limiting the angles of the support arm one 15, the support arm two 16 and the support arm three 18, avoiding the loosening of the double-sided locking retractor 1 caused by the displacement of the limiting frame 17.

[0025] In summary, the double-sided locking automobile safety belt retractor, when in use, firstly manually twists the knob 7 to make the trapezoidal screw rod 6 rotate, so that the fixed seat 14 moves downward with the screw nut 13, the angle of the support arm one 15 slowly changes, and then drives the support arm two 16 and the support arm three 18 to rotate, so that the limiting frame 17 is retracted into the insertion sleeve 5;

[0026] Since the double-sided locking retractor 1 usually needs to be connected with the side pillar of the vehicle body in the form of a mounting bracket to ensure that the relative position meets the safety belt design requirements, the screw hole of the mounting bracket is replaced with a slot, then the insertion sleeve 5 is inserted into the slot, the pawl 11 is pushed to deform the spring 12, the knob 7 is manually twisted to make the trapezoidal screw rod 6 rotate, the fixed seat 14 moves upward with the screw nut 13, the angle of the support arm one 15 slowly changes, and then drives the support arm two 16 and the support arm three 18 to rotate, so that the limiting frame 17 is adjusted to the required height, that is, the double-sided locking retractor 1 is connected with the mounting bracket and is not easy to be separated through the up and down limiting of the connecting plate 4 and the limiting frame 17.

[0027] One end of the safety belt 3 penetrates through the guide hole 2 and is fixedly connected with the internal winding shaft of the double-sided locking retractor 1, when the safety belt 3 is pulled, the force received by the double-sided locking retractor 1 is transmitted to the connecting plate 4 and the limiting frame 17, since the spring 12 is used for resetting the pawl 11, the rotation direction of the knob 7 is locked through the mutual engagement of the pawl 11 and the ratchet 8, the movement range of the screw nut 13 on the trapezoidal screw rod 6 is limited, and the angles of the support arm one 15, the support arm two 16 and the support arm three 18 are limited, thereby avoiding the loosening of the double-sided locking retractor 1 caused by the displacement of the limiting frame 17, and improving the safety of the safety belt 3, providing better safety protection for the driver and passengers.

[0028] The embodiments of the present application are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present application to the forms disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Embodiments were chosen and described in order to best explain the principles of the present application and its practical application, and to thereby enable others skilled in the art to best utilize the present application with various modifications as are suited to the particular use contemplated.

Claims

1. A dual-sided locking car seat belt retractor, comprising a dual-sided locking retractor (1) and a trapezoidal lead screw (6), characterized in that, The right side of the double-sided locking retractor (1) is equipped with a guide port (2), and a safety belt (3) is inserted inside the guide port (2). The left side of the double-sided locking retractor (1) is equipped with a connecting plate (4), and a tube (5) is fixed through the middle of the connecting plate (4). The trapezoidal screw (6) is inserted into the bearing at the top opening of the tube (5), and a screw nut (13) is connected to the outside of the trapezoidal screw (6). Fixing seats (14) are provided on both sides of the screw nut (13), and a support arm (15) is hinged to the middle of the fixing seat (14). A support arm (2) (16) (16) (16) (16) (16) (16) (16) (16) (16) (16) (16) (16) (16) (16) (16) (17) (17) (17) (17) (17) (17) (18) (16) (17) (17) (17) (18) (16) (17)) (17) (17) (17) (17) (18) (17 ...

2. A dual-sided locking car seatbelt retractor according to claim 1, characterized in that, The trapezoidal lead screw (6) is rotatably connected to the insert (5), and a knob (7) is provided at the end of the trapezoidal lead screw (6) away from the insert (5).

3. A dual-sided locking car seatbelt retractor according to claim 2, characterized in that, The knob (7) has ratchet teeth (8) around its outer circumference, and pawls (11) are provided between the ratchet teeth (8).

4. A dual-sided locking car seatbelt retractor according to claim 1, characterized in that, The top of the connecting plate (4) is fixed with a fixing ring frame (9), and a pawl (11) is connected to the groove on the inner side of the fixing ring frame (9) through a rotating shaft (10).

5. A dual-sided locking car seatbelt retractor according to claim 4, characterized in that, A spring (12) is connected to the outside of the pawl (11), and the other end of the spring (12) is fixedly connected to the fixing ring frame (9).

6. A dual-sided locking car seat belt retractor according to claim 1, characterized in that, The second support arm (16) and the third support arm (18) are parallel to each other, and there are two of each of the first support arm (15), the second support arm (16), the limiting frame (17) and the third support arm (18).

7. A dual-sided locking car seatbelt retractor according to claim 1, characterized in that, The end of the second support arm (16) away from the limiting frame (17) is rotatably connected to the insert (5), and the end of the third support arm (18) away from the limiting frame (17) is rotatably connected to the insert (5).

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