Large roller shutter damper

Abstract

The utility model belongs to the field of automotive trim roller shutters, and particularly relates to a large roller shutter damper which comprises a damper outer shell, a stay wire assembly, a coil spring, a coil spring rotating base and a damper lower bottom shell. One end of the stay wire assembly is clamped on the side wall of the coil spring rotating base and wound on the outer side wall of the coil spring rotating base, the coil spring rotating base, the coil spring and the stay wire assembly are arranged in the middle of the damper lower bottom shell together, and the damper shell is located on the coil spring rotating base and matched with the damper lower bottom shell. The Z-direction roller shutter is simple in structure, and solves the problem that abnormal sound is generated when the Z-direction roller shutter is closed rapidly.

Description

Technical Field

[0001] The utility model belongs to the field of automobile interior roller blinds, and in particular relates to a large roller blind damper. Background Art

[0002] A Z-direction roller shutter is installed in the storage box of a commercial vehicle to block the interior. When opening and closing the storage box, the Z-direction roller shutter generally closes under the action of its own weight. During the closing process, the roller shutter falls rapidly and eventually collides with the roller shutter frame, causing abnormal closing noise and damaging the roller shutter frame. Utility Model Content

[0003] In order to solve the above problems existing in the prior art, the utility model provides a large roller shutter damper with a simple structure, which solves the problem of abnormal noise caused by rapid acceleration when the Z-direction roller shutter is closed.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a large roller shutter damper, including a damper shell, a pull wire assembly, a coil spring, a coil spring rotating base and a damper lower bottom shell, the coil spring rotating base is hollow in the middle and the coil spring is located in the middle, one end of the pull wire assembly is clamped on the side wall of the coil spring rotating base and wrapped around the outer side wall of the coil spring rotating base, the coil spring rotating base, the coil spring and the pull wire assembly are placed together in the middle of the damper lower bottom shell, the damper shell is located on the coil spring rotating base and matches the damper lower bottom shell.

[0005] Furthermore, the pull wire assembly includes a pull wire, a pull wire plug is fixed at one end of the pull wire, and a pull wire hook is fixed at the other end. A buckle that matches the pull wire plug is provided on the inner side wall of the coil spring rotating base, and a hole that matches the pull wire diameter is opened near the buckle on the side wall of the coil spring rotating base.

[0006] Furthermore, a clamping column is provided in the middle of the lower bottom shell of the damper, a clamping slot is opened on the clamping column, the inner end of the coil spring is clamped on the clamping slot, and the outer end of the coil spring is clamped on the side wall of the coil spring rotating base.

[0007] Furthermore, a circle of the bottom of the coil spring rotating base is tooth-shaped, and a rotation damper adapted to the tooth shape is provided on the lower bottom shell of the damper.

[0008] Furthermore, a wire blocking ring is sleeved on the pull wire, which is close to the pull wire hook and fixed on one side of the lower bottom shell of the damper. The end of the pull wire to which the pull wire hook is fixed extends out of the damper.

[0009] Compared with the existing technology, the beneficial effects of the present invention are: the present invention has a simple structure and is easy to assemble, which solves the abnormal noise caused by rapid acceleration when closing large roller shutters; and the damper is small in size and the structure occupies less space, which can adapt to more roller shutters with Z-direction stretching. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is an exploded view of the utility model;

[0011] Figure 2 This is an assembly diagram of the cable assembly and coil spring of the utility model assembled on the coil spring rotating base;

[0012] Figure 3 This is an assembly diagram of the coil spring rotating base and the damper assembly on the damper lower base shell of the utility model;

[0013] Figure 4 This is an exploded view of the utility model installed on the assembly;

[0014] Figure 5 This is a schematic diagram of the structure of the utility model assembled on the assembly;

[0015] Figure 6 It is a schematic diagram of the structure of the utility model when the rolling curtain is opened;

[0016] Figure 7 It is a schematic diagram of the structure of the utility model when the rolling shutter is closed. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-3 When the cam 2 is in the air, the spring 3 is pulled out of the airbag 4 and the cam 2 is in the air, so that the cam 2 can be turned off, and the cam 2 can be turned off when the cam 2 is in the air.

[0019] Specifically, the pull wire assembly 2 includes a pull wire 24, a pull wire plug 21 is fixed at one end of the pull wire 24, and a pull wire hook 23 is fixed at the other end. A buckle 41 that is compatible with the pull wire plug 21 is provided on the inner wall of the coil spring rotating base 4, and a hole 42 that is compatible with the diameter of the pull wire 24 is opened near the buckle 41 on the side wall of the coil spring rotating base 4. The pull wire plug 21 is inserted into the buckle 41, and the pull wire 24 passes through the hole 42 from the inner wall of the coil spring rotating base 4 to the outer wall, and is wound around the outer wall of the coil spring rotating base 4.

[0020] Specifically, a clamping column 51 is provided in the middle of the lower bottom shell 5 of the damper, and a clamping slot 52 is opened on the clamping column 51. The inner core end of the coil spring 3 is clamped on the clamping slot 52, the coil spring 3 is wound on the clamping column 51, and the outer end of the coil spring 3 is clamped on the side wall of the coil spring rotating base 4. After the coil spring rotating base 4 rotates, the coil spring 3 is retracted inward around the clamping column 51 to generate tension.

[0021] Specifically, the bottom of the coil spring rotating base 4 is toothed 43, and the damper lower shell 5 is provided with a rotation damper 6 adapted to the toothed 43. The bottom of the coil spring rotating base 4 is engaged with the damper 6, which can also generate resistance to the coil spring rotating base 4 during rotation.

[0022] Specifically, a wire blocking ring 22 is also connected to the pull wire 24. The wire blocking ring 22 is close to the wire hook 23 and is fixed on one side of the lower base shell 5 of the damper. One end of the wire hook 23 is fixed on the pull wire 24 and extends out of the damper. When the pull wire 24 is recovered to the outer wall of the coil spring rotating base 4, the wire hook 23 is blocked by the wire blocking ring 22 to prevent damage to the damper.

[0023] The assembly process of this utility model is: Please refer to Figure 2-7 First, clamp the wire plug 21 in the buckle 41 of the coil spring rotating base 4, then pass the wire 24 through the hole 42, and then wind the wire 24 around the outer wall of the coil spring rotating base 4; then pass the wire 24 through the wire blocking ring 22; then install the coil spring 3 in the middle hollow of the coil spring rotating base 4 to form the coil spring rotating base assembly; then install the coil spring rotating base assembly into the damper lower base shell 5, wherein the inner core end of the coil spring 3 is clamped in the clamping gap 52, the coil spring 3 is wound on the clamping column 51, and then the outer end of the coil spring 3 is clamped on the side wall of the coil spring rotating base 4; then install the damper 6 on the damper lower base shell 5 and engage with the teeth 43 at the bottom of the coil spring rotating base 4, and finally put the damper shell 1 on it, and the damper is assembled. Hook the wire hook 23 on the damper into the roller shutter hook bracket 8 on the roller shutter 7, and then install the damper and the roller shutter 7 together on the roller shutter vertical wall 9 to complete the assembly.

[0024] The motion principle of the present invention is as follows: when closing the roller shutter 7, the roller shutter 7 is pushed downward, and the roller shutter 7 closes downward under its own weight. The roller shutter then pulls the cable hook 23, thereby pulling out the cable 24, which drives the coil spring rotating base 4 to rotate. The coil spring 3 then retracts with the rotation, generating a tension force that offsets the weight of the roller shutter 7. This ensures that the roller shutter 7 does not fall rapidly due to its own weight and produce a collision sound with the roller shutter frame during the downward closing process. When opening the roller shutter 7, the roller shutter 7 is pulled upward, and the coil spring 3 pulls the coil spring rotating base 4 to rotate in the opposite direction, causing the cable 24 to rewind around the coil spring rotating base 4. The present invention has a simple structure and is easy to assemble, solving the problem of abnormal noise caused by rapid acceleration when closing large roller shutters. In addition, the damper is small in size, the structure takes up little space, and can adapt to more roller shutters with Z-axis tension.

[0025] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A large roller shutter damper, characterized in that: The invention comprises a damper housing (1), a cable assembly (2), a coil spring (3), a coil spring rotating base (4) and a damper lower base (5); the coil spring rotating base (4) is hollow in the middle and the coil spring (3) is located in the middle; one end of the cable assembly (2) is clamped on the side wall of the coil spring rotating base (4) and wound on the outer side wall of the coil spring rotating base (4); the coil spring rotating base (4), the coil spring (3) and the cable assembly (2) are placed together in the middle of the damper lower base (5); the damper housing (1) is located above the coil spring rotating base (4) and matches the damper lower base (5).

2. A large roller shutter damper according to claim 1, characterized in that: The pull wire assembly (2) includes a pull wire (24), one end of the pull wire (24) is fixed with a pull wire plug (21), and the other end is fixed with a pull wire hook (23), the inner wall of the coil spring rotating base (4) is provided with a buckle (41) adapted to the pull wire plug (21), and the side wall of the coil spring rotating base (4) is provided with a hole (42) adapted to the diameter of the pull wire (24) near the buckle (41).

3. A large roller shutter damper according to claim 2, characterized in that: A clamping column (51) is provided in the middle of the damper lower bottom shell (5), a clamping slot (52) is provided on the clamping column (51), an inner core end of the coil spring (3) is clamped on the clamping slot (52), and an outer end of the coil spring (3) is clamped on the side wall of the coil spring rotating base (4).

4. A large roller shutter damper according to claim 3, characterized in that: The bottom of the coil spring rotating base (4) is tooth-shaped (43) around one circle, and the damper lower bottom shell (5) is provided with a rotation damper (6) adapted to the tooth-shaped (43).

5. A large roller shutter damper according to claim 4, characterized in that: A wire blocking ring (22) is sleeved on the pull wire (24), and the wire blocking ring (22) is close to the wire hook (23) and fixed on one side of the damper lower shell (5). One end of the pull wire (24) to which the wire hook (23) is fixed extends out of the damper.

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