Safety belt pretensioner shielding structure

Abstract

The utility model discloses a shielding structure of a safety belt pretensioner, and relates to the technical field of vehicles. The safety belt pre-tensioner shielding structure comprises a side plate, a shielding cover, a safety belt pre-tensioner and an elastic pre-tensioning piece, wherein a mounting window is formed in the side plate; the shielding cover is arranged on the side plate in a sliding mode and shields the installation window, and a receding hole is formed in the area, corresponding to the installation window, of the shielding cover in a penetrating mode. The safety belt pretensioner penetrates through the receding hole and the mounting window and is used for acting on the shielding cover when the safety belt pretensioner and the side plate ascend and descend relative to each other, so that the shielding cover slides in the first direction relative to the mounting window. One end of the elastic pre-tightening piece is connected with the side plate, and the other end of the elastic pre-tightening piece acts on the shielding cover and is used for continuously applying acting force to the shielding cover so that at least one side hole wall of the receding hole in the first direction can make contact with the safety belt pre-tightening device. The safety belt pretensioner shielding structure can stably and reliably shield the installation window of the side plate, and user experience is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field, specifically, relate to a safety belt pretensioner shielding structure. BACKGROUND

[0002] The upper slide rail of a vehicle seat is provided with a safety belt pretensioner, and an installation window is formed in the side plate of the seat for the safety belt pretensioner to extend out of, so that the safety belt pretensioner can tighten the safety belt and improve the collision protection effect on the passenger when the vehicle collides.

[0003] At present, the seat on the market is inclined compared with the vertical direction due to the safety belt pretensioner, or the seat moves forward and backward to a certain extent during the lifting adjustment process, so that the safety belt pretensioner moves forward and backward in the installation window during the lifting adjustment process of the seat, and the size of the installation window in the front-back direction needs to be much larger than the safety belt pretensioner, so that the materials in the vehicle are easy to fall into the installation window.

[0004] In order to solve this problem, some seats are provided with a brush or a soft rubber sheet in the installation window, and with the increase of the lifting adjustment times of the seat, the brush and the soft rubber sheet are easy to be damaged after the safety belt pretensioner moves forward and backward in the installation window for many times, so that the shielding of the installation window is invalid. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a safety belt pretensioner shielding structure, which can stably and reliably shield the installation window of the side plate.

[0006] The embodiment of the utility model provides a technical scheme:

[0007] A safety belt pretensioner shielding structure comprises:

[0008] A side plate is provided with an installation window;

[0009] A shielding cover is slidably arranged on the side plate and shields the installation window, and a clearance hole is arranged in the region of the shielding cover corresponding to the installation window;

[0010] A safety belt pretensioner passes through the clearance hole and the installation window, and is used for acting on the shielding cover when relative lifting occurs with the side plate, so that the shielding cover slides in the first direction relative to the installation window;

[0011] An elastic pretensioning piece is connected to one end of the side plate and acts on the other end of the shielding cover, and is used for continuously exerting force on the shielding cover, so that at least one side hole wall of the clearance hole in the first direction is in contact with the safety belt pretensioner.

[0012] In an optional embodiment, the shielding cover comprises a first cover body and a second cover body, the first cover body and the second cover body are respectively in sliding fit with the side plate and are arranged in sequence in the first direction, and the first cover body and the second cover body enclose the accommodation hole.

[0013] At least one of the first cover body and the second cover body is connected with the elastic pre-tightening member so as to be in contact with the seat belt pre-tightener.

[0014] In an optional embodiment, the seat belt pre-tightener comprises a plug-in connector and a conduit, the plug-in connector is above the installation window and is used for plugging a seat belt buckle, one end of the conduit is connected with the plug-in connector and the other end penetrates through the accommodation hole and the installation window.

[0015] The size of the plug-in connector in the first direction is greater than the size of the conduit in the first direction, and during the process that the seat belt pre-tightener descends relative to the side plate until the plug-in connector penetrates through the accommodation hole, the first cover body and the second cover body slide away from each other in the first direction under the thrust of the plug-in connector.

[0016] In an optional embodiment, the number of the elastic pre-tightening members is one, the elastic pre-tightening member is connected with the side plate and the first cover body, and the first cover body keeps in contact with the seat belt pre-tightener under the force of the elastic pre-tightening member.

[0017] In an optional embodiment, the first cover body is provided with a positioning portion, the side plate is provided with a fixing portion at a region away from the first cover body, and the elastic pre-tightening member is a first elastic rubber ring and is hung on the positioning portion and the fixing portion and is in a stretched state.

[0018] In an optional embodiment, the shielding cover further comprises an elastic connecting member, the second cover body is connected with the first cover body through the elastic connecting member, so that the second cover body slides relative to the side plate together with the first cover body.

[0019] In an optional embodiment, the first cover body and the second cover body are both provided with at least one positioning portion, and the elastic connecting member is a second elastic rubber ring and is hung on the positioning portions provided on the first cover body and the second cover body.

[0020] In an optional embodiment, the number of the elastic pre-tightening members is two, one of the elastic pre-tightening members is connected with the side plate and the first cover body respectively, and the other of the elastic pre-tightening members is connected with the side plate and the second cover body respectively.

[0021] Two said elastic pre-tightening members respectively continuously exert opposite forces in the first direction on the first cover body and the second cover body.

[0022] In an optional embodiment, a swing rod is further included, the swing rod having a strip-shaped hole, the side plate being provided with a mounting pin inserted into the strip-shaped hole;

[0023] At least one said elastic pre-tightening member is a tension spring, one said tension spring being connected to one end of the swing rod, and the other end of the swing rod being rotatably connected to the first cover body.

[0024] In an optional embodiment, at least one said elastic pre-tightening member is a compression spring, two ends of one said compression spring respectively abutting against the first cover body and the side plate.

[0025] In an optional embodiment, the side plate is provided with a sliding groove, and the shielding cover is slidably arranged in the sliding groove to shield the mounting window.

[0026] In an optional embodiment, the sliding groove is integrally formed with the side plate, or,

[0027] The sliding groove is mounted to the side plate.

[0028] In an optional embodiment, a mounting gap is formed in a groove bottom wall of the sliding groove, the shielding cover is provided with a first boss on one side corresponding to the groove bottom wall, the first boss being in contact with at least one side wall of the mounting gap in the width direction of the mounting window; and / or,

[0029] At least one side of the shielding cover is provided with a second boss, the second boss on the same side of the shielding cover being in contact with the groove top wall or the groove bottom wall.

[0030] In an optional embodiment, arc-shaped transition surfaces are arranged on both sides of the let-in hole in the first direction; and / or,

[0031] Arc-shaped guide sliding surfaces are arranged on both sides of the safety belt pre-tightener in the first direction.

[0032] Compared with the prior art, the safety belt pretensioner shielding structure provided by the utility model, when the safety belt pretensioner and the side plate are relatively lifted, the shielding cover slides on the side plate to ensure that the seat lifting adjustment is smoothly carried out. And the shielding cover keeps shielding the installation window during the sliding process, and has stable and reliable shielding effect. In addition, under the action of the elastic pretensioning piece, the shielding cover and the safety belt pretensioner always keep in contact, so that relative impact between the two is avoided, the smoothness of the adjustment process is ensured, noise is avoided, and user experience is improved. Therefore, the safety belt pretensioner shielding structure provided by the utility model has the beneficial effects of stably and reliably shielding the installation window of the side plate, and better user experience. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the utility model, and therefore should not be regarded as limiting the scope. For ordinary skilled in the art, other related drawings can also be obtained according to these drawings without creating labor.

[0034] Figure 1 The structural schematic diagram of the safety belt pretensioner shielding structure provided by the embodiments of the utility model is shown in the figure;

[0035] Figure 2 For Figure 1 The connection structure schematic diagram of the shielding cover and the side plate in the figure;

[0036] Figure 3 For Figure 1 The structural schematic diagram of the safety belt pretensioner shielding structure shown in the figure when the seat is in the highest position;

[0037] Figure 4 For Figure 3 The connection structure schematic diagram of the shielding cover and the side plate in the state shown in the figure;

[0038] Figure 5 For Figure 1 The structural schematic diagram of the safety belt pretensioner shielding structure shown in the figure when the seat is in the lowest position;

[0039] Figure 6 For Figure 5 The connection structure schematic diagram of the shielding cover and the side plate in the state shown in the figure;

[0040] Figure 7 For Figure 1 The structural schematic diagram of the safety belt pretensioner shielding structure shown in the figure in the state of safety belt pretensioner sinking pretensioning;

[0041] Figure 8 For Figure 7Connection structure between the shielding cover and the side plate in the state shown in the figure;

[0042] Figure 9 Connection structure between the shielding cover and the side plate in the state shown in the figure; Figure 1

[0043] Figure 10 Connection structure between the shielding cover and the side plate in the state shown in the figure; Figure 1

[0044] Figure 11 Connection structure between the shielding cover and the side plate in the state shown in the figure;

[0045] Figure 12 Connection structure between the shielding cover and the side plate in the state shown in the figure;

[0046] Figure 13 Connection structure between the shielding cover and the side plate in the state shown in the figure; Figure 12

[0047] Figure 14 Connection structure between the shielding cover and the side plate in the state shown in the figure; Figure 12

[0048] Figure 15 Connection structure between the shielding cover and the side plate in the state shown in the figure; Figure 12

[0049] Figure 16 Connection structure between the shielding cover and the side plate in the state shown in the figure; Figure 12

[0050] Figure 17 Connection structure between the shielding cover and the side plate in the state shown in the figure; Figure 16

[0051] Figure 18 Connection structure between the shielding cover and the side plate in the state shown in the figure; Figure 12

[0052] Figure 19 Connection structure between the shielding cover and the side plate in the state shown in the figure; Figure 18

[0053] Figure 20 Connection structure between the shielding cover and the side plate in the state shown in the figure; Figure 12

[0054] Figure 21 ​​​​​​​​​​This is a schematic diagram of the connection structure between the shielding cover and the elastic pretensioner in another embodiment under normal conditions;

[0055] Figure 22 for Figure 21 The diagram shows the connection structure of the seat belt pretensioner when it is in the pretensioned state.

[0056] Icons: 100 - Seatbelt pretensioner shielding structure; 110 - Side plate; 111 - Mounting window; 112 - Fixing part; 113 - Mounting pin; 114 - Slide groove; 1141 - Mounting notch; 120 - Shielding cover; 121 - Displacement hole; 1211 - Arc-shaped transition surface; 122 - First cover; 123 - Second cover; 124 - Positioning part; 125 - Elastic connector; 126 - First boss; 127 - Second boss; 128 - Mounting ear plate; 1281 - Mating hole; 1282 - Misalignment notch; 130 - Seatbelt pretensioner; 131 - Arc-shaped guide surface; 132 - Plug; 133 - Guide tube; 140 - Elastic pretensioner; 150 - Swing rod; 151 - Strip hole; 152 - Mating pin; 1521 - Misalignment protrusion. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0058] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0059] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0060] In the description of the utility model, it needs to be understood that the directions or position relations indicated by the terms "upper", "lower", "inner", "outer", "left", "right" and the like are based on the directions or position relations shown in the drawings, or are the directions or position relations in which the utility model product is usually placed during use, or are the directions or position relations commonly understood by the person skilled in the art, and are merely for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0061] In addition, the terms "first", "second" and the like are merely used for distinguishing description, and cannot be understood as indicating or implying relative importance.

[0062] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrange", "connect" and the like should be understood in a broad sense, for example, "connect" can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be the communication inside two elements. For the person skilled in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0063] The specific embodiments of the utility model will be described in detail below with reference to the drawings.

[0064] Embodiment

[0065] Please refer to Figure 1 , Figure 1 The structure schematic view of the safety belt pretensioner shielding structure 100 provided by the embodiment is shown.

[0066] The safety belt pretensioner shielding structure 100 provided by the embodiment is applied to the seat of a vehicle, and specifically comprises a side plate 110 and a safety belt pretensioner 130, the side plate 110 is connected to the seat, and the safety belt pretensioner 130 is installed on the upper slide rail of the seat, one end of the safety belt pretensioner 130 passes through the installation window 111 below the side plate 110 and then extends out of the surface of the seat to be buckled by the safety belt.

[0067] In actual application, when the vehicle collides, the safety belt pretensioner 130 rapidly tightens the safety belt to lock the passenger on the seat, reduces the distance of the passenger due to inertia forward, and thus reduces the risk of injury of the passenger.

[0068] In order to ensure the timeliness of the response of the safety belt pretensioner 130, the safety belt pretensioner 130 will move relatively forward and backward in the installation window 111 during the process of adjusting the seat height, so that the safety belt can correctly fit the passenger's body when the seat is adjusted to any height.

[0069] This design causes the mounting window 111 to have a size much larger than the seat belt pretensioner 130 in the front-rear direction to avoid the front-rear movement stroke of the seat belt pretensioner 130. The excessively large size of the mounting window 111 causes the interior materials of the vehicle to easily fall into the seat interior through the mounting window 111, which also has a safety hazard. To solve this problem, the seat belt pretensioner shielding structure 100 provided in this embodiment further includes a shielding cover 120 to shield the excess size of the mounting window 111.

[0070] Please refer to Figure 2 , Figure 2 for the connection structure diagram of the shielding cover 120 and the side plate 110.

[0071] In this embodiment, the shielding cover 120 is slidably arranged on the side plate 110 and shields the mounting window 111, and the shielding cover 120 is provided with a clearance hole 121 in the area corresponding to the mounting window 111. The seat belt pretensioner 130 passes through the clearance hole 121, and when the seat belt pretensioner 130 and the side plate 110 move up and down relative to each other, the shielding cover 120 slides in the first direction relative to the mounting window 111 under the action of the seat belt pretensioner 130.

[0072] The orientation descriptions involved in this embodiment are all with reference to the vehicle, Figure 1 the direction indicated by the Z arrow is the movement direction when the seat is adjusted in height, which is actually a vertical direction; Figure 2 the direction indicated by the X arrow is the first direction, which is actually a front-rear direction.

[0073] It can be understood that the clearance hole 121 is in the area surrounded by the mounting window 111, that is, the area of the clearance hole 121 is smaller than the area of the mounting window 111, so as to achieve the shielding of the mounting window 111 by the shielding cover 120. In actual application, when the height of the seat is adjusted, the seat belt pretensioner 130 and the side plate 110 move up and down relative to each other, and in this process, the seat belt pretensioner 130 moves in the first direction relative to the mounting window 111, driving the shielding cover 120 to slide in the first direction, thereby achieving dynamic shielding of the mounting window 111.

[0074] Please refer to Figure 3 and Figure 4 , Figure 3 for the structure diagram of the seat belt pretensioner shielding structure 100 when the seat is in the highest position, Figure 4 for Figure 3 for the connection structure diagram of the shielding cover 120 and the side plate 110 in the state shown in

[0075] It can be considered that in Figure 1 and Figure 2The seat is in the middle position between the upper limit position and the lower limit position. Figure 1 The seat is adjusted from the state shown in Figure 3 During the process of adjusting the seat from the state shown in Figure 2 to the state shown in Figure 4 .

[0076] Please refer to Figure 5 and Figure 6 , Figure 5 The structure diagram of the seat belt pretensioner shielding structure 100 is shown in the state of the seat being in the lowest position. Figure 6 The structure diagram of the seat belt pretensioner shielding structure 100 is shown in the state of the seat being in the lowest position. Figure 5 The connection structure diagram of the shielding cover 120 and the side plate 110 is shown in the state.

[0077] During the process of adjusting the seat from the state shown in Figure 1 to the state shown in Figure 5 , the shielding cover 120 is slid from the position shown in Figure 2 to the position shown in Figure 6 .

[0078] It can be understood that the aforementioned left-right direction is relative in the first direction. To ensure that the shielding cover 120 reliably shields the mounting window 111, it is necessary to ensure that the size of the shielding cover 120 in the first direction is greater than the size of the mounting window 111. Specifically, it is necessary to ensure that the shielding cover 120 can shield the mounting window 111 in both of the two limit positions of Figure 4 and Figure 6 .

[0079] It should be noted that the shielding cover 120 can be a whole structure. In the case that the shielding cover 120 is a whole structure, in order to facilitate assembly and avoid the seat belt pretensioner 130 being stuck, the seat belt pretensioner 130 is at least in clearance fit with the relief hole 121 in the first direction, that is, the size of the relief hole 121 in the first direction is slightly greater than the seat belt pretensioner 130.

[0080] This design causes the relative movement between the seat belt pretensioner 130 and the shielding cover 120 in the first direction in the initial stage of the seat lifting adjustment, which causes the seat belt pretensioner 130 to hit the hole wall of the relief hole 121, generates noise and causes the shielding cover 120 to be stuck during the sliding process.

[0081] To solve this problem, the seat belt pretensioner shielding structure 100 can further include an elastic pretensioning member 140, one end of which is connected to the side plate 110 and the other end of which acts on the shielding cover 120, for continuously exerting a force on the shielding cover 120 to make one side hole wall of the accommodation hole 121 in the first direction contact the seat belt pretensioner 130.

[0082] Under the action of the elastic pretensioning member 140, the shielding cover 120 can always move synchronously with the seat belt pretensioner 130, and the two do not have relative movement in the first direction, thereby avoiding mutual impact and noise, and ensuring smooth sliding of the shielding cover 120 on the side plate 110, improving user experience.

[0083] In fact, in addition to adjusting the seat height causing the seat belt pretensioner 130 to move up and down relative to the side plate 110, when the vehicle is in a collision, the seat belt pretensioner 130 will instantaneously sink towards the inside of the seat to tighten the seat belt, at this time the seat belt pretensioner 130 will also descend relative to the side plate 110. In order to avoid the shielding cover 120 limiting the sinking stroke of the seat belt pretensioner 130, and to ensure that the seat belt pretensioner 130 can reliably tighten the seat belt, the shielding cover 120 can be a split structure.

[0084] Specifically, please refer to Figure 7 and Figure 8 , Figure 7 is a structure schematic diagram of the seat belt pretensioner shielding structure 100 in the state of the seat belt pretensioner 130 sinking and pretensioning, Figure 8 is Figure 7 is a connection structure schematic diagram of the shielding cover 120 and the side plate 110 in the state shown in

[0085] In this embodiment, the shielding cover 120 includes a first cover body 122 and a second cover body 123, the first cover body 122 and the second cover body 123 are respectively in sliding fit with the side plate 110 and arranged in sequence in the first direction, and the first cover body 122 and the second cover body 123 enclose the accommodation hole 121. At least one of the first cover body 122 and the second cover body 123 is connected to the elastic pretensioning member 140 so as to contact the seat belt pretensioner 130.

[0086] The seat belt pretensioner 130 includes a plug-in connector 132 protruding out of the surface of the seat, and a conduit 133 connected to the plug-in connector 132 by passing through the installation window 111 from the inside of the seat, the size of the plug-in connector 132 in the first direction is greater than that of the conduit 133, and in the normal state, the conduit 133 passes through the accommodation hole 121, and the size of the accommodation hole 121 is adapted to the peripheral size of the conduit 133.

[0087] When the vehicle is hit, the pretensioner 130 sinks to its plug-in head 132 through the let-out hole 121, so that the first cover 122 and the second cover 123 are subjected to a pushing force and slide away from each other in the first direction, that is, the size of the let-out hole 121 is expanded to adapt to the size of the circumferential side of the plug-in head 132.

[0088] It can be seen that in the embodiment, the shielding cover 120 adopts a split structure, which can realize the avoidance of the pretensioning stroke of the pretensioner 130, so that the pretensioner 130 can obtain sufficient pretensioning stroke, ensure that the safety belt can be tightened stably and reliably in an emergency, and thus better safety protection effect can be obtained.

[0089] In addition, the safety belt pretensioner shielding structure 100 provided in the embodiment can apply a force to make the first cover 122 and the second cover 123 slide away from each other in the first direction when assembled, so as to form a channel sufficient for the pretensioner 130 to pass through between the two, thereby facilitating the pretensioner 130 to pass through. It can be seen that compared with the embodiment of the shielding cover 120 in a whole structure, the safety belt pretensioner shielding structure 100 provided in the embodiment also has the characteristic of facilitating assembly.

[0090] In the case of the shielding cover 120 in a split structure, the number of elastic pretensioning members 140 can be one, which acts on one of the first cover 122 and the second cover 123, so that one of the first cover 122 and the second cover 123 remains in contact with the pretensioner 130; the number of elastic pretensioning members 140 can also be two, and the two elastic pretensioning members 140 act on the first cover 122 and the second cover 123 respectively, so that the first cover 122 and the second cover 123 both remain in contact with the pretensioner 130.

[0091] It can be understood that in the case that one of the first cover 122 and the second cover 123 remains in contact with the pretensioner 130, the first cover 122 and the second cover 123 can be connected by a connecting member to achieve a follow-up effect; in the case that the first cover 122 and the second cover 123 both remain in contact with the pretensioner 130, the let-out hole 121 surrounded by the first cover 122 and the second cover 123 can not be closed, in other words, in the normal state that the conduit 133 passes through the mounting hole, the first cover 122 and the second cover 123 can not be in contact.

[0092] Please refer to Figure 9 and Figure 10 , Figure 9 Fig. 4 shows a structure schematic diagram of the connection structure of the shielding cover 120 and the elastic pretensioning member 140 in the normal state in the embodiment, Figure 10Fig. 3 is a schematic view of the connection structure of the shielding cover 120 and the elastic pre-tightening member 140 in the pre-tightening state of the seat belt pre-tightener 130 in the embodiment.

[0093] In the embodiment, the number of the elastic pre-tightening member 140 is one, and the elastic pre-tightening member 140 is connected with the side plate 110 and the first cover body 122. Under the action of the elastic pre-tightening member 140, the first cover body 122 keeps in contact with the seat belt pre-tightener 130.

[0094] Specifically, the first cover body 122 is provided with a positioning portion 124, the side plate 110 is provided with a fixing portion 112 at a region away from the first cover body 122 at one end of the installation window 111, and the elastic pre-tightening member 140 is a first elastic rubber ring hung on the positioning portion 124 and the fixing portion 112 and kept in a stretched state.

[0095] It can be understood that the elastic pre-tightening member 140 always keeps in a stretched state and continuously applies a pulling force to the first cover body 122, so that the first cover body 122 keeps in contact with the seat belt pre-tightener 130. It can be understood that when the seat belt pre-tightener 130 moves away from the second cover body 123 relative to the installation window 111, the elastic pre-tightening member 140 is further stretched, and when the seat belt pre-tightener 130 moves towards the second cover body 123 relative to the installation window 111, the stretching degree of the elastic pre-tightening member 140 is reduced.

[0096] Since the shielding cover 120 is a split structure, the synchronous movement of the first cover body 122 and the seat belt pre-tightener 130 can be realized through the elastic pre-tightening member 140, but the second cover body 123 lacks a constraint for its synchronous movement. In order to solve this problem, in the embodiment, the shielding cover 120 further comprises an elastic connecting member 125, and the second cover body 123 is connected with the first cover body 122 through the elastic connecting member 125, so that the second cover body 123 can slide relative to the side plate 110 together with the first cover body 122.

[0097] Specifically, the second cover body 123 is also provided with a positioning portion 124, and the elastic connecting member 125 is a second elastic rubber ring hung on the positioning portions 124 provided on the first cover body 122 and the second cover body 123. In actual application, during the lifting adjustment of the seat, the first cover body 122 moves synchronously with the seat belt pre-tightener 130 in the first direction under the action of the elastic pre-tightening member 140, and the second cover body 123 moves synchronously with the first cover body 122 under the action of the elastic connecting member 125.

[0098] It can be seen that the cooperative action of the elastic pre-tightening member 140 and the elastic connecting member 125 ensures that the shielding cover 120 and the seat belt pre-tightener 130 move synchronously during the lifting adjustment of the seat, avoids the relative movement of the two in the first direction, and avoids the noise and sliding jam caused by the relative movement, so that a better user experience is obtained.

[0099] In the process of the sinking pre-tightening of the safety belt pre-tightener 130, the elastic connecting member 125 is stretched by the first cover 122 and the second cover 123 which slide away from each other, on the one hand, avoiding the rigid stop of the pre-tightening travel of the safety belt pre-tightener 130 by the shielding cover 120, and obtaining a stable and reliable collision protection effect; on the other hand, ensuring that the first cover 122 and the second cover 123 can be in close contact with the safety belt pre-tightener 130 in the pre-tightening state and after the pre-tightening is completed, and realizing reliable shielding of the mounting window 111 in any scenario.

[0100] In another embodiment, the elastic pre-tightening member 140 and the elastic connecting member 125 can also be other elastic members, which can be selected according to actual application conditions, for example, the elastic pre-tightening member 140 can be a tension spring with one end connected to the side plate 110 and the other end connected to the first cover 122; the elastic connecting member 125 can also be a tension spring with one end connected to the first cover 122 and the other end connected to the second cover 123.

[0101] Please refer to Figure 11 , Figure 11 for the structural schematic diagram of the safety belt pre-tightener 130 passing through the accommodation hole 121.

[0102] In order to further improve the sliding smoothness of the shielding cover 120 in the process of the safety belt pre-tightener 130 being tightened, and thus realize quick avoidance of the pre-tightening travel of the safety belt pre-tightener 130, in the present embodiment, the accommodation hole 121 is provided with an arc transition surface 1211 on both sides in the first direction, and the safety belt pre-tightener 130 is provided with an arc sliding guide surface 131 on both sides in the first direction.

[0103] Specifically, the part of the first cover 122 and the second cover 123 which participates in surrounding the accommodation hole 121 is provided with an arc transition surface 1211. It can be understood that when the safety belt pre-tightener 130 is sinking pre-tightened, the arc sliding guide surfaces 131 on both sides thereof slide on the two arc transition surfaces 1211, and since the arc sliding guide surfaces 131 and the arc transition surfaces 1211 are both circular arcs, the sliding process can be ensured to be completed quickly and smoothly, thereby promoting the first cover 122 and the second cover 123 to be quickly separated, and the collision protection effect is further improved.

[0104] Please refer to Figure 12 , Figure 13 and Figure 14 , Figure 12 for the structural schematic diagram of the safety belt pre-tightener shielding structure 100 provided by another embodiment when the seat is in the highest position, Figure 13 for the structural schematic diagram of the safety belt pre-tightener shielding structure 100 provided by another embodiment when the seat is in the lowest position, Figure 12 for the structural schematic diagram of the safety belt pre-tightener shielding structure 100 provided by another embodiment when the seat is in the lowest position, Figure 14As shown in Figure 12 A structural schematic diagram of the safety belt pretensioner cover structure 100 when the safety belt pretensioner 130 is sinking and pretensioning.

[0105] In this embodiment, the number of elastic pretensioning members 140 is two, one of which is connected with the side plate 110 and the first cover 122 respectively, and the other is connected with the side plate 110 and the second cover 123 respectively. The two elastic pretensioning members 140 respectively continuously exert relative forces in the first direction on the first cover 122 and the second cover 123.

[0106] It should be noted that in this embodiment, only one of the first cover 122 and the second cover 123 can be in contact with the safety belt pretensioner 130, and it is only necessary to ensure that the elastic forces of the two elastic pretensioning members 140 are different in size in any state. And in this case, the first cover 122 and the second cover 123 are in contact with each other in the normal state, that is, they remain in contact with each other and form a closed mounting window 111 during the seat lifting adjustment process.

[0107] In this embodiment, the first cover 122 and the second cover 123 can also be in contact with the safety belt pretensioner 130, and in this case, the first cover 122 and the second cover 123 are not in contact with each other in the normal state, that is, they remain spaced apart during the seat lifting adjustment process, and the mounting window 111 formed by the two is not closed.

[0108] It can be understood that since the forces exerted by the two elastic pretensioning members 140 on the first cover 122 and the second cover 123 are opposite in the first direction, when the safety belt pretensioner 130 is sinking and pretensioning in an emergency, the plug-in connector 132 of the safety belt pretensioner 130 passes through the accommodation hole 121, so that the first cover 122 and the second cover 123 respectively overcome the forces of the corresponding elastic pretensioning members 140 and slide away from each other in the first direction, thereby increasing the degree of elastic deformation of the two elastic pretensioning members 140.

[0109] Please refer to Figure 15 and Figure 16 , Figure 15 As shown in Figure 12 The safety belt pretensioner cover structure 100 is shown in the exploded view, Figure 16 The safety belt pretensioner cover structure 100 is shown in the cross-sectional view.

[0110] The safety belt pretensioner shielding structure 100 provided by the embodiment further comprises two swing rods 150, the swing rods 150 are provided with strip-shaped holes 151, the side plate 110 is provided with two mounting pins 113, and the two mounting pins 113 are respectively inserted into the strip-shaped holes 151 of the two swing rods 150. Moreover, the two elastic pretensioning members 140 are both tension springs, and the two tension springs are combined through the two swing rods 150 to be respectively connected with the first cover 122 and the second cover 123.

[0111] Specifically, one tension spring is connected with one end of the swing rod 150, and the other end of the swing rod 150 is rotatably connected with the first cover 122. When the first cover 122 and the second cover 123 move to any position relative to the mounting window 111, both of the two tension springs are in a stretched state, so that the two swing rods 150 have opposite rotation tendencies, thereby continuously exerting a relative force in the first direction on the first cover 122 and the second cover 123.

[0112] During the sliding of the first cover 122 and the second cover 123 in the first direction, the corresponding two swing rods 150 rotate around the respective corresponding mounting pins 113 while being capable of sliding relative to the respective corresponding mounting pins 113, that is, both of the two swing rods 150 have two degrees of freedom of rotation and sliding, which can compensate for the change of the rotation radius caused by the sliding of the first cover 122 and the second cover 123, thereby avoiding sliding jamming.

[0113] It should be noted that in the embodiment, the two elastic pretensioning members 140 are the same and are both tension springs, and the two elastic pretensioning members 140 are connected with the corresponding covers through the swing rods 150. In other embodiments, the two elastic pretensioning members 140 can also be different, and the connection modes of the two elastic pretensioning members 140 and the corresponding covers can also be different.

[0114] For example, in other embodiments, the elastic pretensioning member 140 corresponding to the first cover 122 can be a tension spring, and the tension spring is connected with the elastic pretensioning member 140 through the swing rod 150; and the elastic pretensioning member 140 corresponding to the second cover 123 can be a compression spring, and the compression spring directly abuts against the second cover 123.

[0115] Please refer to Figure 17 , Figure 17 for the enlarged schematic view of the partial region in Figure 16 .

[0116] In the embodiment, the side plate 110 is provided with a sliding groove 114, and the shielding cover 120 is slidably arranged in the sliding groove 114 to shield the mounting window 111. The sliding groove 114 plays a guiding and limiting role for the sliding of the shielding cover 120 in the first direction, and in the embodiment, the sliding groove 114 is integrally formed with the side plate 110.

[0117] In other embodiments, the sliding groove 114 can also be a structure independent of the side plate 110, and is installed to the side plate 110 by welding, bonding, screw connection, etc.

[0118] The groove bottom wall of the sliding groove 114 is provided with an installation gap 1141, and the first boss 126 is provided on the side of the shielding cover 120 corresponding to the groove bottom wall. The first boss 126 is in contact with at least one side wall of the installation window 111 in the width direction. In addition, at least one side of the shielding cover 120 is provided with a second boss 127, and the second bosses 127 on the same side of the shielding cover 120 are in contact with the groove top wall or the groove bottom wall.

[0119] The first direction is actually the length direction of the installation window 111, and the first boss 126 is in contact with at least one side wall of the installation window 111 in the width direction, thereby limiting the relative movement of the shielding cover 120 in the width direction of the sliding groove 114. The two sides of the shielding cover 120 are provided with second bosses 127, and the second bosses 127 provided on the upper surface of the shielding cover 120 are in contact with the groove top wall of the sliding groove 114, and the second bosses 127 provided on the lower surface of the shielding cover 120 are in contact with the groove bottom wall of the sliding groove 114, thereby limiting the relative movement of the shielding cover 120 in the depth direction of the sliding groove 114.

[0120] It can be seen that, through the movement limitation of the first boss 126 and the second boss 127 on the shielding cover 120, the shielding cover 120 can move accurately and smoothly in the first direction, further improving the smoothness and accuracy of the sliding process of the shielding cover 120, avoiding the large shaking of the seat belt pretensioner 130 during the forward and backward movement, and further improving the collision protection effect.

[0121] It should be noted that the way of setting the sliding groove 114 to realize the sliding cooperation between the shielding cover 120 and the side plate 110 is not limited to the embodiment shown in Figure 12 , and in fact, the same way is also adopted in the embodiment shown in Figure 1 . In other embodiments, according to the actual application conditions, the shielding cover 120 and the side plate 110 can also be slidably connected by other structures, for example, a sliding rail extending in the first direction can be recessed on the shielding cover 120, and a sliding block is provided on the side plate 110 and embedded in the sliding rail.

[0122] Please refer to Figure 18 , Figure 19 and Figure 20 , Figure 18 , which show the connection structure of the swing rod 150 and the shielding cover 120, Figure 19 , which shows Figure 18 , which shows the exploded structure of the structure shown in Figure 20 , which shows an enlarged view of the connection position of the swing rod 150 and the shielding cover 120.

[0123] In order to realize the quick cooperation of the swing rod 150 and the shielding cover 120, and prevent the cooperation failure in the process of the swing rod 150 rotating relative to the shielding cover 120, in this embodiment, the mounting lug plate 128 is arranged on the first cover body 122 and the second cover body 123, the cooperation hole 1281 and the staggered notch 1282 are arranged through the mounting lug plate 128, and the staggered notch 1282 is communicated with the cooperation hole 1281. The cooperation pin 152 is protruded on the side wall of the end of the swing rod 150 away from the elastic pre-tightening piece 140, and the staggered protrusion 1521 is protruded on the side wall of the cooperation pin 152.

[0124] Taking the first cover body 122 as an example, when one swing rod 150 is assembled with the first cover body 122, first, the cooperation pin 152 on the swing rod 150 is aligned with the cooperation hole 1281 on the mounting lug plate 128, and the angle of the swing rod 150 is adjusted, so that the staggered protrusion 1521 is also aligned with the staggered notch 1282. Then, the cooperation pin 152 is penetrated through the cooperation hole 1281, and the staggered protrusion 1521 is also penetrated through the staggered notch 1282. After the penetration, the swing rod 150 is rotated with the cooperation pin 152 as the center line, until the staggered protrusion 1521 is locked in the staggered state with the staggered notch 1282, and the cooperation pin 152 is stopped from exiting the cooperation hole 1281.

[0125] It should be noted that, by setting the specific position of the staggered notch 1282 on the periphery of the cooperation hole 1281, and setting the specific position of the staggered protrusion 1521 on the side wall of the cooperation pin 152, it can be ensured that the staggered protrusion 1521 and the staggered notch 1282 always remain in the staggered state within the entire sliding stroke of the first cover body 122, that is, the cooperation pin 152 is always stably and reliably limited, thereby ensuring the reliable assembly of the swing rod 150 and the first cover body 122.

[0126] Please refer to Figure 21 and Figure 22 , Figure 21 which show the connection structure of the shielding cover 120 and the elastic pre-tightening piece 140 in the normal state in another embodiment. Figure 22 which shows the connection structure in Figure 21 when the seat belt pre-tightener 130 is in the pre-tightening state.

[0127] The difference between this embodiment and the safety belt pre-tightener shielding structure 100 shown in Figure 12 is that the structure and connection mode of the elastic pre-tightening piece 140 are different. Specifically, in this embodiment, the elastic pre-tightening piece 140 is a compression spring, one end of each of the two compression springs is connected with the side plate 110, and the other end of each of the two compression springs acts on the first cover body 122 and the second cover body 123 respectively, so as to exert a relative pushing force on the first cover body 122 and the second cover body 123.

[0128] In the embodiment, the two elastic pre-tightening members 140 are the same and are compression springs, but in other embodiments, the two elastic pre-tightening members 140 can also be different, and the connection modes of the two elastic pre-tightening members 140 and the corresponding cover bodies can also be different. For example, in some embodiments, the elastic pre-tightening member 140 corresponding to the first cover body 122 can be a compression spring and abut against the first cover body 122, and the elastic pre-tightening member 140 corresponding to the second cover body 123 can be a tension spring and fixedly connected with the second cover body 123.

[0129] In summary, the safety belt pre-tightener shielding structure 100 provided in the embodiment can ensure that the seat lifting adjustment and the pre-tightening action of the safety belt pre-tightener 130 can be smoothly completed when the safety belt pre-tightener 130 and the side plate 110 are relatively lifted. Moreover, the shielding cover 120 always keeps shielding the installation window 111 during the sliding process, and has a stable and reliable shielding effect. In addition, under the action of the elastic pre-tightening member 140, the shielding cover 120 and the safety belt pre-tightener 130 always keep in contact, so that relative impact between the two is avoided, the smoothness of the adjustment process is ensured, noise is avoided, and user experience is improved.

[0130] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall fall within the scope of the present application.

Claims

1. A seatbelt pretensioner shielding structure, characterized in that, The application relates to a safety belt pretensioner, which comprises the following components: a side plate provided with a mounting window; a shielding cover slidably arranged on the side plate and shielding the mounting window, and a through hole being arranged in the area corresponding to the mounting window; a safety belt pretensioner passing through the through hole and the mounting window, and used for acting on the shielding cover to make the shielding cover slide in a first direction relative to the mounting window when the side plate and the shielding cover are relatively lifted; an elastic pretensioning member, one end of which is connected with the side plate and the other end of which acts on the shielding cover, and the elastic pretensioning member is used for continuously applying force to the shielding cover to make at least one side hole wall of the through hole in the first direction contact with the safety belt pretensioner. The shielding cover comprises a first cover body and a second cover body, the first cover body and the second cover body are respectively slidably matched with the side plate and arranged in the first direction in sequence, and the first cover body and the second cover body enclose the through hole. At least one of the first cover body and the second cover body is connected with the elastic pretensioning member to contact with the safety belt pretensioner. The safety belt pretensioner comprises a plug-in head and a guide pipe, the plug-in head is arranged above the mounting window and is used for plugging a safety belt buckle, one end of the guide pipe is connected with the plug-in head and the other end passes through the through hole and the mounting window. The size of the plug-in head in the first direction is larger than the size of the guide pipe in the first direction, and the first cover body and the second cover body slide away from each other in the first direction under the action of the thrust of the plug-in head during the process that the safety belt pretensioner is lowered relative to the side plate and the plug-in head passes through the through hole.

2. The pretensioner shield structure according to claim 1, characterized by, The number of the elastic pretensioning member is one, the elastic pretensioning member is connected with the side plate and the first cover body, and the first cover body and the safety belt pretensioner keep contact under the action of the elastic pretensioning member. The first cover body is provided with a positioning part, the side plate is provided with a fixing part at the area far away from the one end of the first cover body, the elastic pretensioning member is a first elastic rubber ring, and the first elastic rubber ring is hung on the positioning part and the fixing part and is in a stretched state.

3. The pretensioner shield structure according to claim 2, characterized by The shielding cover further comprises an elastic connecting member, the second cover body is connected with the first cover body through the elastic connecting member, so that the second cover body slides relative to the side plate together with the first cover body. The first cover body and the second cover body are both provided with at least one positioning part, the elastic connecting member is a second elastic rubber ring, and the second elastic rubber ring is hung on the positioning parts arranged on the first cover body and the second cover body.

4. The pretensioner shield structure according to claim 2, characterized by The number of the elastic pretensioning member is two, one of the elastic pretensioning members is connected with the side plate and the first cover body respectively, and the other of the elastic pretensioning members is connected with the side plate and the second cover body respectively.

5. The pretensioner shield structure according to claim 4, characterized by The two elastic pretensioning members continuously apply opposite forces in the first direction to the first cover body and the second cover body respectively.

6. The pretensioner shield structure according to claim 4, characterized by The application further comprises a swing rod, the swing rod is provided with a strip-shaped hole, and the side plate is provided with a mounting pin inserted into the strip-shaped hole.

7. The pretensioner shield structure according to claim 6, characterized by ​ 8. The pretensioner shield structure according to claim 2, characterized by, ​ ​ 9. The pretensioner shield structure according to claim 8, characterized by ​ At least one of the elastic pre-tightening members is a tension spring, one end of the tension spring is connected with the swing rod, and the other end of the swing rod is rotatably connected with the first cover body.

10. The pretensioner shield structure according to claim 8, characterized by, At least one of the elastic pre-tightening members is a compression spring, and two ends of the compression spring are respectively abutted against the first cover body and the side plate.

11. The pretensioner shield structure according to claim 1, characterized by, The side plate is provided with a sliding groove, and the shielding cover is slidably arranged in the sliding groove to shield the installation window.

12. The pretensioner shield structure according to claim 11, characterized by The sliding groove is integrally formed with the side plate, or The sliding groove is mounted to the side plate.

13. The pretensioner shield structure according to claim 1, characterized by, Arc-shaped transition surfaces are arranged on both sides of the let-in hole in the first direction; and / or Arc-shaped guide sliding surfaces are arranged on both sides of the safety belt pre-tightener in the first direction.

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