Rolling and folding mechanism of SAB air bag folding device

Abstract

The utility model provides a rolling and folding mechanism of an SAB air bag folding device. The rolling and folding mechanism comprises a folding unit, and the folding unit comprises a left inserting and folding assembly and a right inserting and folding assembly which are arranged in an installation space and distributed on the two sides of a folding station in the first direction; the clamping unit is arranged on the side, away from the feeding station, of the folding station in the second direction, the clamping unit comprises a clamping part and a clamping part, the clamping part comprises two symmetrically-arranged pressing rulers, and the two pressing rulers clamp the folding part of the air bag to be folded after the first driving assembly completes the folding action and drives the left inserting and folding assembly and the right inserting and folding assembly to reset; the second driving assembly is in mechanical linkage with the first driving assembly, the second driving assembly is used for driving the pressing ruler clamping the folding part of the air bag to be folded to rotate, and the direction of the rotating shaft is the second direction. The rolling and folding mechanism can solve the problems that an air bag is not fixed enough and is poor in adaptability, and the air bag size requirements of different vehicle body installation spaces are met.

Description

Technical Field

[0001] This application relates to the field of automotive airbag technology, specifically to a folding mechanism for an SAB airbag folding device. Background Technology

[0002] In the field of automotive airbag technology, the folding method of SAB (Side Seat Airbag) airbags directly affects their deployment effect and compatibility with the vehicle body. Existing technology, such as the utility model patent with publication number CN 222388127 U, provides an SAB airbag folding device that achieves Z-shaped folding of the airbag by alternating forward and reverse folding plates in the left and right insert folding parts.

[0003] For some vehicle body structures, the airbag needs to be folded and rolled up to match the narrow space on both sides of the seat for installing the airbag. Some car manufacturers also require Z-shaped folding and then rolling up once, considering that rolling up can reduce friction between folding layers and ensure smoother airbag deployment. However, the original SAB airbag folding device can only complete flat folding and cannot adapt to the scenario that requires rolling up for installation. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, this application aims to provide a folding mechanism for an SAB airbag folding device to adapt to scenarios that require roll-up installation and improve the adaptability of the device.

[0005] The SAB airbag folding device includes a base, on which a frame is mounted, and an installation space is formed between the base and the frame; the folding mechanism includes:

[0006] The folding unit includes a left folding assembly and a right folding assembly disposed within the installation space and distributed on both sides of the folding station along a first direction; the folding station is the position where the air bag to be folded is folded; the driving assembly that drives the left folding assembly and the right folding assembly to perform the folding action is a first driving assembly.

[0007] A clamping unit is disposed on the side of the folding station away from the loading station along a second direction, the second direction being perpendicular to the first direction; the clamping unit includes:

[0008] The clamping part includes two symmetrically arranged clamping rulers, which clamp the folding part of the air bag to be folded after the first driving component completes the folding action and drives the left insertion folding component and the right insertion folding component to reset.

[0009] A second driving assembly mechanically linked with the first driving assembly, the second driving assembly being configured to drive the compression ruler to rotate, the rotation axis of the compression ruler being in the second direction.

[0010] According to the technical scheme provided in the embodiments of the present application, the clamping unit further comprises a third driving assembly, the third driving assembly being provided with a first mounting portion, the compression ruler being vertically mounted on the first mounting portion, and the third driving assembly being configured to drive the first mounting portion to move up and down in a third direction, the third direction being perpendicular to the first direction and the second direction.

[0011] According to the technical scheme provided in the embodiments of the present application, the clamping unit further comprises a fourth driving assembly configured to drive the two compression rulers to move close to or away from each other.

[0012] According to the technical scheme provided in the embodiments of the present application, the clamping unit further comprises a first sliding plate and a fifth driving assembly configured to drive the first sliding plate to slide in the first direction, and the clamping portion and the third driving assembly are arranged on the first sliding plate.

[0013] According to the technical scheme provided in the embodiments of the present application, the first sliding plate is provided with a first through hole, and the third driving assembly penetrates through the first through hole and is connected with the first mounting portion.

[0014] According to the technical scheme provided in the embodiments of the present application, the third driving assembly is connected with a second mounting portion after penetrating through the first through hole, and the first mounting portion is rotatably arranged on the second mounting portion.

[0015] According to the technical scheme provided in the embodiments of the present application, the second driving assembly comprises a rotary motor and a linkage gear set, the rotary motor being connected with the rotation axis of the compression ruler through the linkage gear set, and the linkage gear set being provided with an angle limiter to limit the rotation range of the compression ruler.

[0016] According to the technical scheme provided in the embodiments of the present application, the left inserting and folding assembly comprises a plurality of positive inserting pieces movable in the first direction, and the right inserting and folding assembly comprises a plurality of negative inserting pieces movable towards the positive inserting pieces, the negative inserting pieces being staggered with the positive inserting pieces in a second direction, the second direction being perpendicular to the first direction.

[0017] According to the technical scheme provided in the embodiments of the present application, after the positive inserting pieces and the negative inserting pieces complete the folding action in the space between the two compression rulers, the upper compression ruler abuts against the uppermost positive inserting piece or negative inserting piece, and the lower compression ruler abuts against the lowermost positive inserting piece or negative inserting piece.

[0018] According to the technical scheme provided in the embodiment of the application, the first driving assembly drives the positive insertion sheet and the reverse insertion sheet to be sequentially withdrawn from top to bottom along the second direction, after each single insertion sheet is withdrawn, the upper pressure tight ruler abuts against the next single insertion sheet of the withdrawn single insertion sheet, and the lower pressure tight ruler abuts against the lowermost single insertion sheet, so as to compress the folding part of the to-be-folded air bag layer by layer.

[0019] Compared with the prior art, the application has the beneficial effects that: the Z-shaped folding is realized by the interlaced positive insertion sheet and reverse insertion sheet, and the preliminary shaping is realized. The folding part is wound by the rotation of the clamping ruler, the volume of the air bag is further compressed, and the shape is fixed, and the rebound is prevented. The winding angle can be adjusted by the second driving assembly according to the space of the vehicle body (such as 30°, 90° and 180°), and the personalized installation demand of some vehicle enterprises is met. When the vehicle enterprise does not need to be wound and folded, the to-be-folded air bag can be withdrawn after the folding action, and if the to-be-folded air bag needs to be wound and folded, the folding part is rotated after the folding action (the winding action is triggered after the compression, and the shape compression of the air bag is completed in the fixed state), so that the to-be-folded air bag is withdrawn after the folding part forms the winding shape, and the function is rich. The problems of insufficient air bag fixing and poor adaptability in the prior art are solved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The structure diagram of the clamping unit provided in the embodiment of the application is shown in the figure.

[0021] Figure 2 The structure diagram of the pressure tight ruler provided in the embodiment of the application is shown in the figure.

[0022] Figure 3 The structure diagram of the folding unit provided in the embodiment of the application is shown in the figure.

[0023] Figure 4 The structure diagram of the SAB air bag folding device provided in the embodiment of the application is shown in the figure.

[0024] The text annotations in the figure are as follows:

[0025] 1, folding unit; 11, left insertion folding assembly; 12, right insertion folding assembly; 13, first driving assembly; 14, positive insertion sheet; 15, reverse insertion sheet; 2, clamping unit; 21, third driving assembly; 22, pressure tight ruler; 23, fourth driving assembly; 24, fifth driving assembly; 25, first sliding plate; 251, first through hole; 26, second driving assembly. DETAILED DESCRIPTION

[0026] The application will be described in further detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related application, and not to limit the application. In addition, it should be noted that only parts related to the application are shown in the drawings for ease of description.

[0027] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and embodiments.

[0028] Embodiment 1

[0029] As mentioned in the background, in order to solve the problems in the prior art, the present application provides a folding mechanism of a SAB air bag folding device to adapt to the scene of winding installation and improve the adaptability of the device.

[0030] The SAB air bag folding device comprises a base, a rack is arranged on the base, and a mounting space is formed between the base and the rack; a clamping mechanism is arranged in the mounting space, the clamping mechanism is used for clamping a to-be-folded air bag and moving the to-be-folded air bag to a feeding station or a folding station; as shown in the figure, the folding mechanism comprises: Figures 1-4

[0031] a folding unit 1, the folding unit 1 comprises a left folding assembly 11 and a right folding assembly 12 arranged in the mounting space and distributed on both sides of the folding station along a first direction; the folding station is a position for folding action on the to-be-folded air bag; a first driving assembly 13 is used for driving the left folding assembly 11 and the right folding assembly 12 to perform folding action;

[0032] a clamping unit 2, the clamping unit 2 is arranged on a side of the folding station away from the feeding station along a second direction, the second direction is perpendicular to the first direction; the clamping unit 2 comprises:

[0033] a clamping part, the clamping part comprises two symmetrically arranged pressing rulers 22, the two pressing rulers 22 clamp a folding part of the to-be-folded air bag after the first driving assembly 13 completes the folding action and drives the left folding assembly 11 and the right folding assembly 12 to reset;

[0034] a second driving assembly 26, the second driving assembly 26 is mechanically linked with the first driving assembly 13, and the second driving assembly 26 is used for driving the pressing rulers 22 clamping the folding part of the to-be-folded air bag to rotate, and the direction of the rotation axis is the second direction.

[0035] ​Specifically, the first direction is horizontal and transverse, parallel to the length direction of the base 1, and is the moving direction of the left and right folding components 11 and 12; the second direction is front and back, and is the width direction of the base; and the third direction is the height direction of the base, and is the staggered direction of the positive and negative tabs 14 and 15. The folding station is located in the central region of the base, the loading station is located at the front end of the base, and the clamping mechanism is arranged at the rear side of the folding station and does not overlap with the loading station in space. Mechanical linkage: the second driving assembly 26 is connected with the first driving assembly 13 through gears or connecting rods, and automatic winding is triggered after folding is completed. Rotation axis direction: the pressing ruler 22 rotates around a vertical axis, ensuring that the winding direction is perpendicular to the folding direction and avoiding interference.

[0036] In a preferred embodiment, the clamping unit 2 further comprises a third driving assembly 21, a first mounting portion is arranged on the third driving assembly 21, and the pressing ruler 22 is vertically mounted on the first mounting portion. The third driving assembly 21 is used to drive the first mounting portion to move up and down along a third direction, and the third direction is perpendicular to the first direction and the second direction, respectively.

[0037] Specifically, the first mounting portion is a bracket connecting the pressing ruler 22 and the third driving assembly 21.

[0038] In a preferred embodiment, the clamping unit further comprises a fourth driving assembly 23 for driving the two pressing rulers 22 to move close to or away from each other.

[0039] Optionally, the fourth driving assembly 23 is a jaw cylinder.

[0040] In a preferred embodiment, the clamping unit 2 further comprises a first sliding plate 25 and a fifth driving assembly 24 for driving the first sliding plate 25 to slide along the first direction. The clamping portion and the third driving assembly 21 are arranged on the first sliding plate 25.

[0041] Specifically, the fifth driving assembly 24 drives the sliding plate to move transversely, adjusting the relative position of the clamping unit 2 and the folding station. Adapt to different folding widths: according to the size of the air bag, the sliding plate is locked after moving to the preset position.

[0042] In a preferred embodiment, the first sliding plate 25 has a first through hole 251, and the third driving assembly 21 penetrates through the first through hole 251 and is connected with the first mounting portion.

[0043] Specifically, the first through hole 251 is a circular hole on the sliding plate, used for penetrating the piston rod of the third driving assembly 21.

[0044] In a preferred embodiment, the third driving assembly 21 is connected with a second mounting portion after penetrating through the first through hole 251, and the first mounting portion is rotatably mounted on the second mounting portion.

[0045] Specifically, the second installation portion is installed with a second driving assembly 26, which is used to drive the compression ruler 22 to rotate.

[0046] In a preferred embodiment, the second driving assembly 26 comprises a rotary motor and a linkage gear set, the rotary motor is connected with the rotating shaft of the compression ruler 22 through the linkage gear set, and the linkage gear set is provided with an angle limiter to limit the rotation range of the compression ruler 22.

[0047] Specifically, the linkage gear set is a reduction gear set, which transmits the motor torque to the rotating shaft of the compression ruler 22. The angle limiter is a mechanical stopper to limit the rotation angle. Motor drive: the rotary motor drives the compression ruler 22 to rotate through the gear set. Angle control: the angle limiter triggers stop when rotating to 180 degrees, completing a folding action.

[0048] In a preferred embodiment, the left folding assembly 11 comprises a plurality of positive tabs 14 movable in the first direction, and the right folding assembly 12 comprises a plurality of negative tabs 15 movable towards the positive tabs 14, the negative tabs 15 being staggered with the positive tabs 14 in a second direction perpendicular to the first direction.

[0049] In a preferred embodiment, after the positive tabs 14 and the negative tabs 15 complete the folding action in the space between the two compression rulers 22, the upper compression ruler 22 abuts against the uppermost positive tab 14 or negative tab 15, and the lower compression ruler 22 abuts against the lowermost positive tab 14 or negative tab 15.

[0050] In a preferred embodiment, the first driving assembly 13 drives the positive tabs 14 and the negative tabs 15 to be withdrawn one by one from top to bottom along the second direction, and after each layer of single tab is withdrawn, the upper compression ruler 22 abuts against the next layer of single tab, and the lower compression ruler 22 abuts against the lowermost layer of single tab, so as to compress the folding part of the air bag to be folded layer by layer.

[0051] Specifically, the pressing ruler 22 is arranged in the installation space in a lifting manner, the stroke range of the lifting guide is determined by the size of the air bag to be folded and the folding area, and before the folding operation is started, the pressing ruler 22 is arranged between the left folding assembly 11 and the right folding assembly 12 (it is to be noted that the distance between the two pressing rulers 22 is set to accommodate the thickness of the folded part of the air bag to be folded after the folding operation is completed, and each single insertion piece is arranged between the two pressing rulers 22), when the air bag to be folded is moved to the folding station, the pressing ruler 22 is arranged on the side (optionally, the right side) of the air bag to be folded, at this time, the positive insertion piece 14 and the negative insertion piece 15 are inserted into the two pressing rulers 22 in sequence, so that the air bag to be folded is formed into a Z-shaped folding structure, and the folded part is clamped into the two pressing rulers 22.

[0052] Specifically, the folding stage: the positive insertion piece 14 and the negative insertion piece 15 of the left folding assembly 11 and the right folding assembly 12 are moved in the first direction, and the Z-shaped folding is completed; the pressing trigger: after the folding is completed, the clamping driving assembly is first triggered to drive the two pressing rulers 22 to be clamped to each other, to reach the initial pressing position (contact with the uppermost / lowest folding piece), and then the single insertion piece is retracted in sequence; the insertion piece retraction and dynamic pressing: the positive insertion piece 14 is retracted in the first direction by one insertion piece stroke, and the stroke sensor detects the retraction completion signal; the third driving assembly 21 drives the two pressing rulers 22 to be pressed downward in the third direction at the same time, and when the distance between the upper pressing ruler 22 and the single insertion piece adjacent to the bottom of the upper pressing ruler 22 is equal to the distance between the lower pressing ruler 22 and the single insertion piece adjacent to the top of the lower pressing ruler 22, the downward pressing is stopped, and at the same time, the fourth driving assembly 23 drives the two pressing rulers 22 to be clamped to each other again, so that the upper pressing ruler 22 is in abutment with the single insertion piece in the uppermost layer, and the lower pressing ruler 22 is in abutment with the single insertion piece in the lowermost layer, to fix the current folding layer; the above steps are repeated until all the single insertion pieces are completely retracted, and the pressing ruler 22 reaches the final pressing position, and after the pressing ruler 22 reaches the final pressing position, if the air bag needs to be rolled, the second driving assembly 26 is controlled to drive the pressing ruler 22 clamping the folding part of the air bag to be folded to rotate.

[0053] Optionally, the stroke sensor is an optical proximity switch, which is arranged at the end of the movement path of the positive insertion piece 14 and the negative insertion piece 15, and when the insertion piece is completely retracted to the initial position, a detection signal is triggered.

[0054] The principles and implementation manners of the present application are described by using specific examples in the present article, and the above example descriptions are only used to help understand the method of the present application and its core idea. The above descriptions are only the preferred implementation manners of the present application. It should be noted that, due to the limited nature of the language expression, there are objectively infinite specific structures, and for ordinary skilled persons in the technical field, some improvements, refinements or changes can be made without departing from the principles of the present application, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, shall be regarded as the protection scope of the present application.

Claims

1. A folding mechanism for an SAB airbag folding device, characterized in that, The SAB air bag folding device comprises a base provided with a rack, and a mounting space is formed between the base and the rack; a folding mechanism comprises: a folding unit (1) comprising left and right inserting and folding assemblies (11) and (12) arranged in the mounting space and distributed on both sides of a folding station in a first direction; the folding station is a position for folding action on a to-be-folded air bag; a first driving assembly (13) drives the left and right inserting and folding assemblies (11) and (12) to perform folding action; a clamping unit (2) arranged on a side of the folding station away from an upper station in a second direction perpendicular to the first direction; the clamping unit (2) comprises: a clamping part comprising two symmetrical pressing rulers (22) for clamping a folding position of the to-be-folded air bag after the first driving assembly (13) completes folding action and drives the left and right inserting and folding assemblies (11) and (12) to reset; a second driving assembly (26) mechanically linked with the first driving assembly (13) and used for driving the pressing rulers (22) clamping the folding position of the to-be-folded air bag to rotate, with the direction of the rotation axis being the second direction.

2. The tuck mechanism of the SAB airbag folding apparatus according to claim 1, characterized in that: The clamping unit (2) further comprises a third driving assembly (21) provided with a first mounting part, and the pressing rulers (22) are vertically mounted on the first mounting part; the third driving assembly (21) is used for driving the first mounting part to ascend and descend in a third direction perpendicular to the first direction and the second direction.

3. The tuck mechanism of the SAB airbag folding apparatus according to claim 1, wherein: The clamping part further comprises a fourth driving assembly (23) for driving the two pressing rulers (22) to approach or move away from each other.

4. The tuck mechanism of the SAB airbag folding apparatus according to claim 2, wherein: The clamping unit (2) further comprises a first sliding plate (25) and a fifth driving assembly (24) for driving the first sliding plate (25) to slide in the first direction; the clamping part and the third driving assembly (21) are arranged on the first sliding plate (25).

5. The tuck mechanism of the SAB airbag folding apparatus according to claim 4, wherein: The first sliding plate (25) has a first through hole (251), and the third driving assembly (21) penetrates through the first through hole (251) and is connected with the first mounting part.

6. The tuck mechanism of the SAB airbag folding apparatus according to claim 5, wherein: The third driving assembly (21) is connected with a second mounting part after penetrating through the first through hole (251), and the first mounting part is rotatably mounted on the second mounting part.

7. The tuck mechanism of the SAB air bag folding apparatus according to claim 1, wherein: The second driving assembly (26) comprises a rotary motor and a linkage gear set, the rotary motor is connected with the rotation shaft of the pressing ruler (22) through the linkage gear set, and the linkage gear set is provided with an angle limiter to limit the rotation range of the pressing ruler (22).

8. The tuck mechanism of the SAB air bag folding apparatus according to claim 1, wherein: The left inserting and folding assembly (11) comprises a plurality of positive inserting pieces movable in the first direction, and the right inserting and folding assembly (12) comprises a plurality of negative inserting pieces movable towards the positive inserting pieces, the negative inserting pieces being staggered with the positive inserting pieces in a second direction perpendicular to the first direction.

9. The tuck mechanism of the SAB airbag folding apparatus according to claim 8, wherein: After the positive inserting pieces and the negative inserting pieces complete the folding action in the space between the two pressing rulers (22), the upper pressing ruler (22) abuts against the uppermost positive inserting piece or negative inserting piece, and the lower pressing ruler (22) abuts against the lowermost positive inserting piece or negative inserting piece.

10. The tuck mechanism of the SAB airbag folding apparatus according to claim 8, wherein: The first driving assembly (13) drives the positive inserting pieces and the negative inserting pieces to be sequentially withdrawn from top to bottom in the second direction, and after each layer of single inserting piece is withdrawn, the upper pressing ruler (22) abuts against the next layer of single inserting piece of the withdrawn single inserting piece, and the lower pressing ruler (22) abuts against the lowermost single inserting piece, so as to press the folding position of the air bag to be folded layer by layer.

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