Size-adjustable air bag exhaust hole positioning device

Abstract

The utility model provides a size-adjustable air bag exhaust hole positioning device, and relates to the technical field of positioning devices. The device is suitable for being placed at the position of an exhaust hole of an air bag for positioning and comprises a base, diameter moving sub-blocks, a main shaft body and an on-shaft guide block, the main shaft body is rotationally arranged on the base, and the multiple diameter moving sub-blocks are distributed on the circumferential side of the main shaft body around the circumference so that the outline of the exhaust hole of the air bag can be formed through the outer walls of the diameter moving sub-blocks; a plurality of sliding grooves matched with the diameter moving sub-blocks are formed in the base, and the on-shaft guide block is in threaded connection with the main shaft body and is in contact connection with the bottoms of the diameter moving sub-blocks; the on-shaft guide blocks are suitable for driving the diameter moving sub-blocks to be mutually gathered or unfolded along the corresponding sliding grooves so as to adjust the diameter of the outline of the exhaust hole. According to the scheme, the corresponding size of the positioning device can be adjusted according to needs, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning devices, in particular to a positioning device for an air bag exhaust hole with adjustable size. Background Art

[0002] Most existing airbags have exhaust holes. When the airbag is ejected, it will immediately deflate to avoid direct collision with the occupants during ejection and causing injuries. It is a safety design. Its main functions are: 1. Prevent the airbag from being torn and damaged due to excessive pressure; 2. Buffer and absorb the impact kinetic energy of the occupants; 3. Prevent the occupants from suffocating. Therefore, its production process is very critical.

[0003] The design of the exhaust hole requires sewing technology. The manufacturing process is to first use a cylindrical aluminum alloy as a positioning pin, lock the bolt, fix the position of the exhaust hole and the exhaust hole reinforcement plate, and then sew it automatically. However, the positioning pin has a single size and cannot be adjusted. When some projects are in the early stages of development or multiple products share a production line, the size of the exhaust hole is often different. The positioning pins used need to be switched frequently, and sometimes it is not always possible to find the right size positioning pin to use. The production cycle is long, resulting in the inability to be put into use in a timely manner. Utility Model Content

[0004] The utility model discloses an air bag exhaust hole positioning device with adjustable size, aiming to improve the problem of single size of existing exhaust hole positioning pins.

[0005] The utility model adopts the following scheme:

[0006] The present application provides an airbag exhaust hole positioning device with adjustable size, which is suitable for being placed at the exhaust hole position of the airbag for positioning, comprising: a base, a diameter moving block, a main shaft body and an on-axis guide block, the main shaft body is rotatably arranged on the base, a plurality of the diameter moving blocks are circumferentially distributed on the circumference of the main shaft body to form a positioning contour of the airbag exhaust hole through its outer wall, and a plurality of slide grooves adapted to the diameter moving blocks are arranged on the base, the on-axis guide block is threadedly connected to the main shaft body and is in contact with the bottom of the diameter moving block, and when the main shaft body rotates, the on-axis guide block is suitable for driving the diameter moving blocks to gather or expand together along their respective corresponding slide grooves to adjust the diameter size of the exhaust hole contour.

[0007] Furthermore, the bottom of each of the diameter moving blocks is provided with an inclined surface facing the main shaft body, and the on-axis guide block is provided with a conical surface for matching with the inclined surface.

[0008] Furthermore, a rotating handle is provided at the protruding end of the main shaft body to drive the main shaft body to rotate, and the rotation of the main shaft body is suitable for driving the guide block on the shaft to rise or fall along the central axis direction of the main shaft body.

[0009] Furthermore, a bearing is arranged between the main shaft and the base.

[0010] Furthermore, an upper spring ring is arranged at the upper part of the diameter moving block, and a lower spring ring is arranged at the lower part to realize inward tightening constraint on the diameter moving block.

[0011] Furthermore, six diameter moving blocks are provided.

[0012] Furthermore, the rotating handle is mounted on the main shaft body through a fixing pin.

[0013] Beneficial effects:

[0014] In this solution, the guide block on the shaft is arranged to move up and down on the main shaft body, thereby driving the diameter moving blocks to gather or expand with the main shaft body as the center, thereby adjusting the diameter size formed by multiple diameter moving blocks to meet the requirements of different exhaust hole sizes. Through this solution, the required size can be adjusted as needed, and the operation is simple and easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a diameter moving block-by-block deployment of an airbag exhaust hole positioning device with adjustable size according to an embodiment of the utility model;

[0016] Figure 2 It is a structural schematic diagram of an adjustable-size airbag exhaust hole positioning device according to an embodiment of the utility model when the diameter of the parts are moved and gathered;

[0017] Figure 3 It is a side view of a diameter moving block of an air bag exhaust hole positioning device with adjustable size according to an embodiment of the utility model when it is deployed;

[0018] Figure 4 This is a schematic diagram of the movement from gathering to unfolding of an airbag exhaust hole positioning device with adjustable size according to an embodiment of the utility model;

[0019] Icon: fixing pin 1, rotating handle 2, base 3, diameter moving block 4, upper spring ring 5, main shaft body 6, guide block on the shaft 7, lower spring ring 8, bearing 9. DETAILED DESCRIPTION

[0020] Combination Figures 1 to 4As shown, the present embodiment provides an airbag exhaust hole positioning device with adjustable size, which is suitable for being placed at the exhaust hole position of the airbag for positioning, and comprises: a base 3, a diameter moving block 4, a main shaft body 6 and an on-axis guide block 7, wherein the main shaft body 6 is rotatably arranged on the base 3, a plurality of the diameter moving blocks 4 are circumferentially distributed on the circumference of the main shaft body 6 to form a positioning contour of the airbag exhaust hole through its outer wall, and a plurality of slide grooves adapted to the diameter moving blocks 4 are arranged on the base 3, the on-axis guide block 7 is threadedly connected to the main shaft body 6 and is in contact with the bottom of the diameter moving block 4, and when the main shaft body 6 rotates, the on-axis guide block 7 is suitable for driving the diameter moving blocks 4 to gather or expand together along their respective corresponding slide grooves to adjust the diameter size of the exhaust hole contour.

[0021] Combination Figures 1 to 3 As shown, in this embodiment, the base 3 includes a panel and an L-shaped member arranged below the panel, and the horizontal plate of the L-shaped member is arranged parallel to the panel. The main shaft body 6 is vertically arranged on the panel, and a bearing 9 is arranged on the L-shaped member to support the main shaft body 6. One end of the main shaft body 6 passes through the horizontal plate of the L-shaped member and is used to connect the rotating handle 2. The end of the main shaft body 6 exposed from the horizontal plate is fixed to the rotating handle 2 through a fixing pin 1.

[0022] The panel is provided with a plurality of slide grooves, which are distributed around the circumference with the main shaft body 6 as the center. In this embodiment, six slide grooves are provided as an example for explanation. The length direction of the six slide grooves extends along the diameter direction of the main shaft body 6, so that the diameter moving block 4 can move along the diameter direction of the main shaft body 6 when it is active. Of course, in other embodiments, the number of the diameter moving block 4 and the slide grooves can be more, such as 8, 12, etc.

[0023] Combination Figures 1 to 3 As shown, the diameter moving block 4 is confined in the slide groove, and a slope facing the main shaft body 6 is provided at the bottom of each diameter moving block 4, and the guide block 7 on the shaft is provided with a tapered surface for cooperating with the slope. When the guide block 7 on the shaft moves upward, the tapered surface cooperates with the slope to push the slope outward, so that the diameter moving blocks 4 are expanded, the distance between the diameter moving blocks 4 is expanded, and the size of the cylindrical body formed by the outer peripheral surfaces of the multiple diameter moving blocks 4 is increased. On the contrary, when the guide block 7 on the shaft moves downward, under the tightening force of the upper spring coil 5 and the lower spring coil 8, the various diameter moving blocks 4 gather together to reduce the distance between the diameter moving blocks 4. Here, the outer walls of the diameter moving blocks 4 cooperate together to form the function of the exhaust hole positioning pin, which can be adjusted after insertion, or inserted into the airbag after adjustment to be used as a positioning pin.

[0024] In this embodiment, the on-axis guide block 7 is arranged on the spindle body 6 through a threaded connection, and can be arranged in the shape of a truncated cone, and a conical surface is arranged on the outer side thereof for cooperating with the inclined surface on the diameter moving block 4, and the bottom inclined surfaces of all the diameter moving blocks 4 are at the same height when cooperating with the conical surface. A screw nut pair is formed between the on-axis guide block 7 and the spindle body 6, so that when the spindle body 6 rotates, the on-axis guide block 7 can rise or fall along the length direction of the spindle body 6.

[0025] Combination Figure 3 As shown, in this embodiment, the upper portion of the diameter moving block 4 is provided with an upper spring coil 5, and the lower portion is provided with a lower spring coil 8 to realize the inward tightening constraint of the diameter moving block 4. Here, each of the diameter moving blocks 4 is provided with a groove structure at the upper and lower portions, and is arranged at the same height, so as to be respectively used to install the upper spring coil 5 and the lower spring coil 8. Through the action of the upper spring coil 5 and the lower spring coil 8, when the guide block 7 on the shaft moves downward, an inward tightening force can be provided to constrain each of the diameter moving blocks 4, and at the same time, when the guide block 7 on the shaft moves upward, an inward tightening constraint can also be provided to improve the stability of the diameter moving block 4.

[0026] During operation, the main shaft body 6 is rotated by twisting the rotating handle 2. When the shaft is rotated forward, the guide block 7 on the shaft moves upward due to the rotation of the thread to push the diameter moving block 4. The diameter moving block 4 moves outward through the slide groove after being subjected to force. After the diameter moving block 4 moves to the specified position, the diameter adjustment of the exhaust hole positioning pin is realized. The upper spring ring 5 and the lower spring ring 8 respectively realize the inward tightening constraint of the diameter moving block 4, so as to closely adhere to and stabilize the guide block 7 on the shaft, improve the adjustment accuracy, and finally achieve accurate control of the diameter adjustment of the exhaust hole positioning pin.

[0027] Compared with the cylindrical positioning pins used in traditional airbag exhaust holes, this embodiment has the advantage of quickly adjusting the diameter, saving the time of replacing, installing and adjusting the positioning pins of the fixed exhaust holes, and improving production efficiency. In the early stage of airbag development, the design of exhaust holes of different sizes and the requirements of extreme samples can be quickly completed. At the same time, the adjustable airbag exhaust hole positioning device of this solution can meet the co-production of multiple products, enhancing the inclusiveness of the production line.

[0028] It should be understood that the above are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions under the concept of the present utility model belong to the protection scope of the present utility model.

[0029] The above description of the drawings used in the implementation manner only shows certain embodiments of the utility model and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

Claims

1. An airbag exhaust hole positioning device with adjustable size, which is suitable for being placed at the exhaust hole position of an airbag for positioning, characterized in that: include: A base, a diameter moving block, a main shaft body and an on-axis guide block, the main shaft body is rotatably arranged on the base, a plurality of the diameter moving blocks are circumferentially distributed on the circumference of the main shaft body to form a positioning contour of the airbag exhaust hole through its outer wall, and a plurality of slide grooves adapted to the diameter moving blocks are arranged on the base, the on-axis guide block is threadedly connected to the main shaft body and is in contact with the bottom of the diameter moving block, and when the main shaft body rotates, the on-axis guide block is suitable for driving the diameter moving blocks to gather or expand along their respective corresponding slide grooves to adjust the size of the exhaust hole contour.

2. The airbag exhaust hole positioning device with adjustable size according to claim 1, characterized in that: The bottom of each diameter moving block is provided with an inclined surface facing the main shaft body, and the on-axis guide block is provided with a conical surface for matching with the inclined surface.

3. The size-adjustable airbag exhaust hole positioning device according to claim 1, characterized in that: The protruding end of the main shaft body is provided with a rotating handle to drive the main shaft body to rotate, and the rotation of the main shaft body is suitable for driving the guide block on the shaft to rise or fall along the central axis direction of the main shaft body.

4. The size-adjustable airbag exhaust hole positioning device according to claim 1, characterized in that: A bearing is arranged between the main shaft body and the base.

5. The size-adjustable airbag exhaust hole positioning device according to claim 1, characterized in that: An upper spring ring is arranged at the upper part of the diameter moving block, and a lower spring ring is arranged at the lower part to realize inward tightening constraint on the diameter moving block.

6. The size-adjustable airbag exhaust hole positioning device according to claim 1, characterized in that: The diameter moving blocks are provided with six.

7. The size-adjustable airbag exhaust hole positioning device according to claim 3, characterized in that: The rotating handle is mounted on the main shaft body through a fixing pin.

Images