A curtain fixing structure for rear passenger protection

Abstract

The application provides a blind fixing structure, which comprises a mounting slot formed on a side plate of a vehicle, two tooth holes respectively arranged oppositely on the top wall and the bottom wall of the mounting slot, an elastic spring sheet arranged on the outer side of each tooth hole, and one end of the elastic spring sheet being fixed and the other end being a free end. A clamping tooth is arranged in each tooth hole, the outer end of the clamping tooth is connected with or contacted with the free end of the corresponding elastic spring sheet, and the inner ends of the clamping teeth are oppositely arranged through the tooth holes to form a first clamping tooth group and a second clamping tooth group arranged in a right-to-left sequence. The right side space of the first clamping tooth group is a normal installation position, and the left side space of the second clamping tooth group is an avoiding locking position. When the vehicle is hit after being parked, the blind crossbeam pushes the clamping tooth to move outward to overcome the elastic force of the elastic spring sheet, so that the blind crossbeam moves to the avoiding locking position through the clamping tooth group, and meanwhile, the blind is ensured not to move back.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, specifically to a curtain fixing structure. Background Technology

[0002] For some vehicle models equipped with cargo covers, during a rear-end collision, there is a risk that the headrest may break and cause injury to the occupants due to the impact between the seat headrest and the metal beam of the cargo cover.

[0003] To address this issue, a sufficient gap can be designed between the rear seats and the cargo cover to ensure that the headrests do not contact the cargo cover when the rear seats move backward. However, due to the need for a large gap, the cargo cover may not be able to effectively conceal the trunk. Alternatively, a two-way cargo cover can be designed, but this would significantly increase the weight, making it difficult for petite users to independently install and remove the cargo cover, and would also increase costs considerably.

[0004] In view of the above problems, the inventors of this invention have finally obtained this invention after a long period of research and practice. Summary of the Invention

[0005] To address the aforementioned technical deficiencies, this invention provides a cargo cover fixing structure that avoids the risk of the cargo cover colliding with the seat headrest during a rear-end collision.

[0006] The technical solution adopted in this invention is as follows:

[0007] A cargo cover fixing structure is provided, including mounting slots formed on the side panels of the car behind the rear seats for mounting the ends of the cargo cover beams.

[0008] The mounting slot has two toothed holes on its top and bottom walls, which are spaced apart along the length of the vehicle. Each toothed hole has an elastic spring on its outer side, with one end fixed and the other end free. Each toothed hole has a locking tooth, the outer end of which is connected to or in contact with the free end of the corresponding elastic spring. The inner ends of the locking teeth pass through the toothed holes and are opposite each other, forming a first locking tooth group and a second locking tooth group arranged sequentially from right to left.

[0009] Within the mounting slot, the right side of the first locking tooth assembly is the normal installation position, and the left side of the second locking tooth assembly is the avoidance and locking position; when the vehicle is in normal driving, the end of the cargo cover beam is located in the normal installation position;

[0010] The locking teeth are configured such that when the curtain beam applies a force greater than a preset value to the inner right side of the locking teeth, the locking teeth can overcome the elastic force of the elastic spring and move outward, causing the curtain beam to pass through the locking teeth assembly and move to the left; when the curtain beam applies force to the inner left side of the locking teeth, the position of the locking teeth remains unchanged, that is, the curtain beam cannot pass through the locking teeth assembly and move to the right.

[0011] Furthermore, the elastic stiffness of the elastic spring corresponding to the first tooth group is greater than the elastic stiffness of the elastic spring corresponding to the second tooth group.

[0012] Furthermore, the elastic stiffness of the elastic springs corresponding to the first and second tooth groups is configured as follows:

[0013] When the instantaneous forward acceleration of the vehicle is greater than or equal to 16g, the cargo cover beam, under the action of inertia, can overcome the obstruction of the first locking tooth group, move to the left out of the normal installation position, and continue to move to the left through the second locking tooth group to enter the avoidance locking position.

[0014] When the instantaneous forward acceleration of the vehicle is less than 16g, the curtain beam cannot overcome the obstruction of the first locking tooth group and thus locks in the normal installation position.

[0015] Furthermore, the elastic spring is horizontally disposed outside the tooth hole, the free end of the elastic spring is provided with an elongated hole, the outer end of the locking tooth is provided with a guide post in the longitudinal direction, the guide post passes through the elongated hole, and when the locking tooth moves outward against the elastic force of the elastic spring, the guide post moves to the right along the elongated hole.

[0016] Furthermore, each elastic spring is fixed to a spring fixing part, and each locking tooth is hinged to a rotating part; the spring fixing part and the rotating part are fixed to the housing of the vehicle side panel or the mounting slot.

[0017] Furthermore, the spring fixing part includes a horizontal slot and a longitudinal fixing surface; the fixing end of the elastic spring has a horizontal fixing surface and a bent fixing surface that are perpendicular to each other; the horizontal fixing surface is installed in the horizontal slot, and the bent fixing surface is attached to the longitudinal fixing surface and fixed by screws.

[0018] Furthermore, the outer end of the tooth is provided with a rotating body, which cooperates with the rotating part to form a rotating pair.

[0019] Furthermore, the rotating body is a rotating shaft structure, and the rotating part is a bushing structure.

[0020] Furthermore, the right side of the inner end of the locking tooth is an inclined plane, and its inclination direction gradually tilts to the right starting from the top of the inner end of the locking tooth; the left side of the inner end of the locking tooth is a longitudinal plane perpendicular to the elastic spring.

[0021] Furthermore, the spring fixing part and the rotating part are fixedly connected or are an integral structure.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] The dust cover fixing structure of the present invention includes two dust cover fixing positions. The front position is the normal use position, in which the dust cover is fixed by a spring-tooth structure. When a collision occurs, the inertial force of the dust cover overcomes the locking force of the spring-tooth structure and slides to the rear fixed position, while ensuring that the dust cover does not rebound. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 A front plan view of the curtain fixing structure according to an embodiment of the present invention is shown;

[0026] Figure 2 A schematic diagram of the partitions of the curtain fixing structure according to an embodiment of the present invention is shown;

[0027] Figure 3 A rear plan view of the curtain fixing structure according to an embodiment of the present invention is shown;

[0028] Figure 4 A rear perspective view of the curtain fixing structure according to an embodiment of the present invention is shown;

[0029] Figure 5 An exploded view of the curtain fixing structure according to an embodiment of the present invention is shown;

[0030] Figure 6 This diagram shows the assembly schematic of the curtain beam of the present invention on the fixed structure.

[0031] Figure 7 A schematic diagram is shown illustrating the movement of the cargo cover beam within the cargo cover fixing structure of the present invention during a rear-end collision with a vehicle. Detailed Implementation

[0032] The above-mentioned and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] like Figure 1 , Figure 2 As shown, the cargo cover fixing structure includes mounting slots 1 formed on the side panels 100 on both sides behind the rear seats of the car, and the two ends of the cargo cover beam are respectively installed in the mounting slots 1 of the side panels 100 on both sides. Figure 1 The direction of the vehicle's front shown is the forward direction in this invention. Figure 2 The left and right directions shown are the left and right directions in the description of this invention.

[0036] The top and bottom walls of the mounting slot 1 are respectively provided with two opposing toothed holes 4, which are spaced apart along the length of the vehicle. Each toothed hole 4 contains a locking tooth 21, 22, 31, or 32, with the inner ends of the locking teeth passing through the toothed holes and facing each other to form a first locking tooth group 2 and a second locking tooth group 3 arranged sequentially from right to left. Within the mounting slot 1, the space to the right of the first locking tooth group 2 is the normal installation position A, and the space to the left of the second locking tooth group 3 is the avoidance and locking position B. When the vehicle is in normal driving, the end of the cargo cover beam is located in the normal installation position A.

[0037] like Figures 3-5As shown, each tooth hole 4 has an elastic spring 6 on its outer side. One end of the elastic spring 6 is fixed and the other end is free. The outer ends of the locking teeth 21, 22, 31, and 32 are connected to or in contact with the free ends of the corresponding elastic springs 6. Under the action of the elastic force of the elastic springs 6, the inner ends of the locking teeth 21, 22, 31, and 32 are restricted within the mounting slot 1.

[0038] The locking teeth are configured such that when the curtain beam applies a force greater than a preset value to the inner right side of the locking teeth 21, 22, 31, 32, the locking teeth 21, 22, 31, 32 can overcome the elastic force of the elastic spring and move outward, causing the curtain beam to pass through the locking tooth group 2, 3 and move to the left; when the curtain beam applies force to the inner left side of the locking teeth 21, 22, 31, 32, the locking teeth position remains unchanged, that is, the curtain beam cannot pass through the locking tooth group 2, 3 and move to the right.

[0039] Since each locking tooth corresponds to an independent spring 6, its elastic stiffness can be adjusted by modifying factors such as the material and thickness of each spring 6. The elastic stiffness of the spring 6 corresponding to the first locking tooth group 2 is much greater than that of the spring 6 corresponding to the second locking tooth group 3. Specifically, the elastic stiffness of the spring 6 corresponding to the first locking tooth group 2 must be greater to prevent the cargo cover beam from disengaging from its normal installation position A under normal acceleration or minor collisions (insufficient to cause headrest rod breakage). Conversely, the elastic stiffness of the spring 6 corresponding to the second locking tooth group 3 must be sufficiently small, negligible compared to the elastic stiffness of the spring 6 corresponding to the first locking tooth group 2, so that the second locking tooth group 3 does not obstruct the cargo cover beam from sliding to the left, ensuring that the cargo cover beam can slide into the avoidance locking position B. Because the cargo cover beam cannot pass through the locking teeth 2 and 3 to move to the right, when the cargo cover beam slides into the avoidance locking position B, the cargo cover beam cannot spring back (turn around), thus avoiding the impact between the seat headrest and the metal beam of the cargo cover caused by the springback. Furthermore, even if the cargo cover beam does not overcome the obstruction of the second locking teeth 3 to enter the avoidance locking position B, it means that the cargo cover beam loses almost all its energy when passing through the first locking teeth 2, and the force applied to the inner right side of the second locking teeth 3 is very small, so it cannot spring back or is stopped by the first locking teeth 2 outside the normal installation position A with very small springback force. The small springback force plus the avoidance of the normal installation position A is sufficient to ensure the safety of the rear passengers.

[0040] In a preferred embodiment, the elastic stiffness of the elastic spring 6 is configured such that when the instantaneous forward acceleration of the vehicle is greater than or equal to 16g (gravitational acceleration), the cargo cover beam, under the action of inertia, can overcome the obstruction of the first locking tooth group 2, move to the left out of the normal installation position A, and continue to move to the left through the second locking tooth group 3 to enter the avoidance locking position B. When the instantaneous forward (front-end direction) acceleration of the vehicle is less than 16g, the cargo cover beam cannot overcome the obstruction of the first locking tooth group 2, and thus locks in the normal installation position.

[0041] In a specific embodiment, the description focuses on the locking tooth 21; the structures of the other locking teeth are the same and will not be repeated. The elastic spring 6 is horizontally positioned outside the tooth hole 4. The free end of the elastic spring 6 has an elongated hole 62. The outer end of the locking tooth 21 has a longitudinally positioned guide post 211. The guide post 211 passes through the elongated hole 62, connecting the locking tooth 21 to the free end of the elastic spring 6. When the locking tooth 21 moves outward against the elastic force of the elastic spring 6, the guide post 211 moves to the right along the elongated hole 62. Simultaneously, the elongated hole 62 restricts the forward and backward movement of the guide post 211, ensuring stable and uniform deformation of the elastic spring 6 during the rotation of the locking tooth 21, thereby ensuring that the curtain beam performs its avoidance action under the correct conditions.

[0042] The elastic spring 6 is fixed to the spring fixing part 7, and the retaining tooth 21 is hinged to a rotating part 8. The spring fixing part 7 and the rotating part 8 are fixed to the side panel 100 of the vehicle or to the housing 11 of the mounting slot. The spring fixing part 7 and the rotating part 8 can be independent structures, fixedly connected, or integrated. The spring fixing part includes a horizontal slot 71 and a longitudinal fixing surface, and the longitudinal fixing surface is provided with a threaded hole 72. The fixing end of the elastic spring 6 has a perpendicular horizontal fixing surface and a bent fixing surface; the horizontal fixing surface is installed in the horizontal slot 71, and the bent fixing surface is provided with a fixing hole 61. The bent fixing surface is attached to the longitudinal fixing surface and fixed by a screw 9. This structure makes the assembly of the elastic spring 6 simple and firm, and can ensure the position of the elastic spring 6 in all directions, thereby ensuring that the curtain beam performs avoidance action under the correct conditions.

[0043] The outer end of the retaining tooth 21 is provided with a rotating body 212, which cooperates with the rotating part 8 to form a rotating pair. Specifically, the rotating body 212 is a rotating shaft structure, and the rotating part 8 is a bushing structure, with the rotating shaft installed inside the bushing to form a rotating pair. The rotating pair is linked with the guide post 211, so that the retaining tooth 21 can rotate stably around the rotating shaft, and the spring deformation is stable and uniform.

[0044] The inner right side of the tooth 21 is an inclined surface, and its inclination direction gradually slopes to the right starting from the top of the inner end of the tooth. When the curtain beam applies force to the inner right side of the tooth 21, it can push the tooth 21 to rotate outward under sufficient force, thereby increasing the distance between the relative inner ends of the tooth assembly until the curtain beam is allowed to pass.

[0045] Understandably, the inner right side of the locking tooth can also be other shapes, only requiring a change in the direction of the force so that the locking tooth moves to overcome the elastic force of the spring. For example, the contact position between the locking tooth and the curtain beam is only at the top of the inner end, and those skilled in the art can design it according to the actual scenario.

[0046] The inner left side of the locking tooth 21 is a longitudinal plane perpendicular to the elastic spring. When the curtain beam applies force to the inner left side of the locking tooth 21, no outward force is generated, so the locking tooth 21 cannot be pushed to rotate outward, and thus the curtain beam cannot pass through.

[0047] It is understandable that the inner left side of the locking tooth can also be other shapes, as long as it is ensured that the curtain beam cannot push the locking tooth outward. For example, the inner left side of the locking tooth can also be a rightward concave arc surface, etc. Those skilled in the art can design according to the actual scenario.

[0048] like Figure 6 , Figure 7 As shown, when the vehicle is in normal operation, the end of the cargo cover beam 200 is located in the normal installation position A within the mounting slot 1. In the event of a severe rear-end collision that could cause a serious impact between the headrest and the cargo cover beam, the cargo cover beam 200 overcomes the spring force through inertia, passes through the first locking tooth group 2, disengages from the normal installation position A, and slides to the left until it overcomes the spring force of the second locking tooth group 3 and enters the avoidance locking position B, thus creating space for the headrest to move backward. To ensure the cargo cover beam 200 enters the locking position B, the elastic stiffness of the spring corresponding to the second locking tooth group 3 is much smaller than the elastic stiffness of the spring corresponding to the first locking tooth group 2. Because the locking teeth cannot be pushed open from the left, the cargo cover does not rebound.

[0049] The above are merely preferred embodiments of the present invention and are illustrative rather than restrictive. The structure and connection methods of the components in the present invention can be varied, and any equivalent transformations and improvements made based on the technical solution of the present invention should not be excluded from the protection scope of the present invention.

Claims

1. A cargo cover fixing structure, comprising mounting slots formed on the side panels of a vehicle on both sides behind the rear seats for mounting the ends of a cargo cover crossbeam; characterized in that, The mounting slot has two toothed holes on its top and bottom walls, which are spaced apart along the length of the vehicle. Each toothed hole has an elastic spring on its outer side, with one end fixed and the other end free. Each toothed hole has a locking tooth, the outer end of which is connected to or in contact with the free end of the corresponding elastic spring. The inner ends of the locking teeth pass through the toothed holes and are opposite each other, forming a first locking tooth group and a second locking tooth group arranged sequentially from right to left. Within the mounting slot, the right side of the first locking tooth assembly is the normal installation position, and the left side of the second locking tooth assembly is the avoidance and locking position; when the vehicle is in normal driving, the end of the cargo cover beam is located in the normal installation position; The locking teeth are configured such that when the curtain beam applies a force greater than a preset value to the inner right side of the locking teeth, the locking teeth can overcome the elastic force of the elastic spring and move outward, causing the curtain beam to pass through the locking teeth assembly and move to the left; when the curtain beam applies force to the inner left side of the locking teeth, the position of the locking teeth remains unchanged, that is, the curtain beam cannot pass through the locking teeth assembly and move to the right.

2. The curtain fixing structure as described in claim 1, characterized in that, The elastic stiffness of the elastic spring corresponding to the first tooth group is greater than the elastic stiffness of the elastic spring corresponding to the second tooth group.

3. The curtain fixing structure as described in claim 2, characterized in that, The elastic stiffness configuration of the elastic springs corresponding to the first and second tooth groups is as follows: When the instantaneous forward acceleration of the vehicle is greater than or equal to 16g, the cargo cover beam, under the action of inertia, can overcome the obstruction of the first locking tooth group, move to the left out of the normal installation position, and continue to move to the left through the second locking tooth group to enter the avoidance locking position. When the instantaneous forward acceleration of the vehicle is less than 16g, the curtain beam cannot overcome the obstruction of the first locking tooth group and thus locks in the normal installation position.

4. A curtain fixing structure as described in any one of claims 1-3, characterized in that, The elastic spring is horizontally disposed outside the tooth hole. The free end of the elastic spring is provided with an elongated hole. The outer end of the tooth is provided with a guide post in the longitudinal direction. The guide post passes through the elongated hole. When the tooth moves outward against the elastic force of the elastic spring, the guide post moves to the right along the elongated hole.

5. The curtain fixing structure as described in claim 4, characterized in that, Each elastic spring is fixed to a spring fixing part, and each locking tooth is hinged to a rotating part; the spring fixing part and the rotating part are fixed to the housing on the side panel of the vehicle or the mounting slot.

6. The curtain fixing structure as described in claim 5, characterized in that, The spring fixing part includes a horizontal slot and a longitudinal fixing surface; the fixing end of the elastic spring has a horizontal fixing surface and a bent fixing surface that are perpendicular to each other; the horizontal fixing surface is installed in the horizontal slot, and the bent fixing surface is attached to the longitudinal fixing surface and fixed by screws.

7. The curtain fixing structure as described in claim 6, characterized in that, The outer end of the tooth is provided with a rotating body, which cooperates with the rotating part to form a rotating pair.

8. The curtain fixing structure as described in claim 7, characterized in that, The rotating body is a rotating shaft structure, and the rotating part is a bushing structure.

9. The curtain fixing structure as described in claim 8, characterized in that, The inner right side of the locking tooth is a slope, and its inclination direction gradually slopes to the right starting from the top of the inner end of the locking tooth; the inner left side of the locking tooth is a longitudinal plane perpendicular to the elastic spring.

10. The curtain fixing structure as described in claim 9, characterized in that, The spring fixing part and the rotating part are fixedly connected or are an integral structure.

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