Safety belt wire harness

Abstract

The invention relates to the field of automobile safety belts, and discloses a safety belt wire harness which comprises a shell and is characterized in that extending openings are formed in the positions, close to the rear portion, of the left side and the right side of the shell, a wire outlet is formed in the rear portion of the bottom of the shell, and the shell is completely closed except the two extending openings and the wire outlet; a sliding block is slidably connected to the interior of the shell in the front-back direction, and wing rods are integrally formed on the lower rear portions of the left side and the right side of the sliding block. According to the safety belt wire harness, dust invasion is avoided by forming a closed space, and the service life and performance consistency are greatly improved in cooperation with grease smearing; by adopting a buckle type structure and accurate positioning design, the assembly is simplified, and the efficiency is improved; by means of multiple limiting and guiding structures, stable and reliable work is guaranteed, and the multi-point contact design of the reeds further enhances the on-off reliability; component patch positions are reserved on the PCB, so that function expansion is facilitated, an inclined wire outlet is adaptive to in-vehicle wiring installation, and the overall comprehensive performance is excellent.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile safety belts, in particular to a safety belt wire harness. BACKGROUND

[0002] In the field of automobile safety belt technology, the traditional safety belt wire harness has many technical pain points in actual application, mainly reflected in the following aspects:

[0003] Firstly, the sliding position of the traditional safety belt wire harness is in a naked state, and foreign matter is easy to invade the inside, causing the internal conductive components (such as contact sheets and conductive contacts) to contact poorly, and even causing functional failure, which seriously affects the normal work of the safety belt.

[0004] Secondly, due to the exposed structure, it is impossible to reduce the friction loss between the sliding components (such as sliding blocks and contact sheets) by applying grease and other methods, resulting in a large amount of wear and tear of the components after long-term use, which not only shortens the service life of the product, but also causes significant performance differences between different products, poor consistency, and difficulty in meeting the high requirements of automobile parts for stability and reliability.

[0005] In addition, with the development of automobile intelligence, the safety belt wire harness gradually needs to integrate more functions (such as state monitoring and signal transmission), but the traditional structure lacks adaptability to expanded functions, and cannot conveniently integrate additional components, limiting its application in multi-functional scenarios.

[0006] In view of the above problems existing in the prior art, such as dust invasion, large amount of wear and tear, poor performance consistency and limited function expansion, it is urgent to design a new safety belt wire harness structure to improve the service life, performance stability and function expansion of the product. SUMMARY

[0007] The purpose of the present application is to provide a safety belt wire harness, which aims to solve the above technical problems existing in the prior art.

[0008] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0009] A safety belt wire harness, comprising a shell, both left and right sides of the shell are provided with an extension outlet near the rear, the bottom rear of the shell is provided with a wire outlet, the shell is completely closed except the two extension outlets and the wire outlet, a sliding block is slidably connected inside the shell along the front-rear direction, wing rods are integrally formed on the lower rear of both left and right sides of the sliding block, the wing rods pass through the corresponding extension outlets, the sliding block is slidably arranged on the bottom surface of a PCB board, the bottom surface of the PCB board is provided with component patches and a gold finger, the top surface of the PCB board is clamped to the top surface of the inner wall of the shell, a reed is fixedly installed on the top surface of the sliding block, the sliding contact end of the reed is bent to tightly contact the gold finger, a return spring is arranged in the front end of the shell, the return spring is abuttingly installed between the front end of the inner wall of the shell and the front end of the sliding block, the welding end of the PCB board is welded with one end of a wire harness, the other end of the wire harness passes through the wire outlet, the other end of the wire harness is connected with a terminal in a terminal sleeve, a plurality of cable ties are arranged on the surface of the wire harness at intervals.

[0010] Further, the shell comprises an upper cover and a lower cover, the upper cover is uniformly provided with a protruding upper hanging table at both front and rear ends around the upper cover, the lower cover is provided with a lower buckle ear at each of the corresponding upper hanging tables around the lower cover, each of the upper hanging tables is buckled with the corresponding lower buckle ear;

[0011] The middle part of both left and right sides of the upper cover is provided with an upper buckle ear, and the middle part of both left and right sides of the lower cover is provided with a lower hanging table.

[0012] Further, the inner wall top of the lower cover is provided with a pressing plate column, after the upper cover is buckled with the lower cover, the top end of the pressing plate column tightly presses the PCB board at the top surface of the inner wall of the upper cover.

[0013] Further, a plurality of protruding plate limiting edges are uniformly arranged around the top of the inner wall of the upper cover according to the contour of the PCB board, and the PCB board is clamped between the plurality of plate limiting edges.

[0014] Further, a wire pressing cover is arranged at the middle part of the rear end of the upper cover, the top surface rear end of the wire pressing cover is inclined downward, a guide inclined surface is arranged at the middle part of the rear end of the lower cover, the guide inclined surface is arranged in parallel with the top surface of the wire pressing cover, and the guide inclined surface and the wire pressing cover enclose the wire outlet which is inclined downward.

[0015] Furthermore, a hollow groove is provided at the front end of the slider, and a positioning column 2 is provided at the front end of the hollow groove. The reset spring is in the hollow groove, and one end thereof is plugged into the positioning column 2. A yield arc groove is provided at the top of the inner wall of the upper cover corresponding to the reset spring, and a positioning column 1 is provided at the rear end of the yield arc groove. The positioning column 1 extends into the hollow groove and is plugged into the other end of the reset spring. The opening width of the bottom surface of the hollow groove is smaller than the diameter of the reset spring.

[0016] Furthermore, a gap exists between the slider and the wing rod where they are not connected, forming a dynamic guide groove. A guide ridge is provided on the top of the inner wall of the upper cover corresponding to the dynamic guide groove, and the guide ridge is slidably connected to the corresponding dynamic guide groove.

[0017] The top of the inner wall of the upper cover is close to the outer wall of the wing rod and is provided with a dust shield parallel to the guide edge. The dust shield corresponds to the position of the extension port and forms a staggered dust-proof structure with the guide edge on the same side.

[0018] The slider is placed on the top surface of the lower cover and realizes the structure of front-back movement and left-right limitation through the contour shape and positioning with the lower cover.

[0019] Furthermore, fixed columns are provided at the rear of the top of the slider and near the left and right sides, and positioning holes are provided on the surface of the spring corresponding to each of the fixed columns. The positioning holes are connected with the corresponding fixed columns with a clearance fit, and the rear end of the spring is inserted behind the top surface of the slider and is set at an acute angle to its top surface.

[0020] Furthermore, claws are symmetrically provided on the left and right sides of the top surface of the slider and near the middle with respect to the central axis, and the PCB board is slidably connected between the two claws.

[0021] Furthermore, the reed is in a U-shaped structure, and two sliding claws are arranged side by side at both ends of the reed. The sliding claws are in an upwardly protruding arc structure and are in close contact with the gold finger.

[0022] The beneficial effects of the present invention are:

[0023] The seat belt harness provided by the present invention effectively solves the technical pain points of traditional seat belt harnesses through structural innovation, and has the following significant beneficial effects:

[0024] 1. Improve service life and performance consistency

[0025] The product is assembled to form a closed internal space (only necessary outlet and outlet are reserved), which can effectively block dust and foreign matter from entering, cooperate with the design of internal greasing, greatly reduce the friction loss of sliding parts (reeds and gold fingers, sliders and housings), significantly prolong the service life of the product; at the same time, the closed environment and stable contact structure ensure that the performance difference between different products is small, and the consistency is greatly improved.

[0026] 2. Simplify the assembly process and improve production efficiency

[0027] The shell adopts a snap type structure design of upper cover and lower cover, and is connected by staggered snap connection of upper hanging table and lower buckle ear, upper buckle ear and lower hanging table, to realize quick buckling and fixing without additional fasteners, and is convenient and efficient to assemble; in addition, each component (such as PCB board, reed, reset spring) is designed with precise positioning structure (such as plate limiting edge, fixed column, spring positioning column, etc.), which reduces the assembly difficulty, reduces the abnormal risk in the assembly process, and improves the production efficiency.

[0028] 3. Ensure structural stability and working reliability

[0029] The upper cover is designed with PCB board limiting edge and lower cover pressing plate column, which cooperates to accurately fix the PCB board on the inner wall of the shell, ensures the position stability and horizontal consistency, guarantees the contact tightness of the reed and the gold finger, and improves the sensitivity of the signal on-off;

[0030] The guide rib of the upper cover and the dynamic guide groove of the slider are in sliding cooperation, and the profile positioning of the slider and the lower cover is realized, which realizes the precise guidance and left-right limiting of the slider sliding forward and backward, avoids the shaking or deviation in the sliding process, and ensures the smooth sliding consistency;

[0031] The reset spring is fixed through the hollow slot (concave structure) of the slider and the positioning column (positioning column one and positioning column two) of the upper cover and the slider, which effectively avoids the deformation and distortion problem of the spring when pressed, and ensures the stability and reliability of the reset function;

[0032] The reed is fixed by the interference fit of the fixed column of the slider and the positioning hole of the reed, and adopts a U-shaped structure design, both ends of which are provided with two upward protruding arc-shaped sliding claws which tightly contact with the gold fingers, which not only ensures the consistency of the reed installation position, but also reduces the influence of size error on contact reliability through multi-point contact, and ensures the stability of the on-off function.

[0033] 4. Enhance the function expansion and installation adaptability

[0034] The PCB board bottom surface is reserved with component mounting positions, various sensors, signal processing chips and other components can be integrated according to actual requirements, the functional expansion requirement of the safety belt wire harness is met, meanwhile, the outlet of the shell bottom adopts the design of being inclined to the lower side (enclosed by the wire pressing cover of the upper cover and the guide inclined surface of the lower cover), the complex wiring environment in the vehicle is adapted, the installation and arrangement of the wire harness are facilitated, and the scene adaptability of the product is improved.

[0035] In conclusion, the service life, performance stability, assembly efficiency and functional expansion are all improved by the structural optimization and detail design, and the application is suitable for the automobile safety belt system with high reliability and consistency. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is a three-dimensional structure schematic diagram of the application;

[0037] Figure 2 It is a three-dimensional explosion structure schematic diagram of the application;

[0038] Figure 3 It is a three-dimensional explosion structure schematic diagram of the shell;

[0039] Figure 4 It is a three-dimensional structure schematic diagram of the upper cover;

[0040] Figure 5 It is a plane structure schematic diagram of the sliding block;

[0041] Figure 6 It is a three-dimensional structure schematic diagram of the sliding block and the upper cover;

[0042] Figure 7 It is a three-dimensional structure schematic diagram of the lower cover;

[0043] Figure 8 It is a three-dimensional structure schematic diagram of the PCB board;

[0044] Figure 9 It is a three-dimensional structure schematic diagram of the spring sheet.

[0045] The reference signs are as follows: 1, shell; 11, upper cover; 111, upper hanging table; 112, plate limiting edge; 113, positioning column one; 114, guide edge; 115, upper buckle ear; 116, give way arc groove; 117, wire pressing cover; 118, dust shield; 12, lower cover; 121, lower buckle ear; 122, lower hanging table; 123, guide inclined surface; 124, pressing plate column; 13, outlet; 2, wire harness; 3, cable tie; 4, terminal sleeve; 5, reset spring; 6, sliding block; 61, dynamic guide groove; 62, buckle claw; 63, fixed column; 64, hollow groove; 65, positioning column two; 66, wing rod; 7, PCB board; 71, component mounting; 72, gold finger; 8, spring sheet; 81, positioning hole; 82, sliding contact claw. DETAILED DESCRIPTION

[0046] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly introduced below in conjunction with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0047] Example:

[0048] like Figures 1-9 As shown, this embodiment provides a seat belt harness, including a shell 1, and a projection 13 is provided on both sides of the left and right sides of the shell 1 near the rear, and a wire outlet is provided at the rear of the bottom. The shell 1 is completely closed except for the two projections 13 and the wire outlet, thereby forming a sealed space to prevent dust and foreign matter from entering, and the interior of the product maintains a clean environment. After applying grease, the product life and consistency are greatly improved. The interior of the shell 1 is connected to a slider 6 that slides along the front and back directions. The rear lower part of the left and right sides of the slider 6 is integrally formed with a wing rod 66, and the wing rod 66 passes through the corresponding projection 13. The slider 6 is slidably set on the bottom surface of the PCB board 7, and the bottom surface of the PCB board 7 is provided with a component patch 71 and a gold finger 72. The top surface of the PCB board 7 is fixed in the shell 1. The top surface of the wall and the top surface of the slider 6 are fixedly installed with a spring 8, and the sliding contact end of the spring 8 is tilted and close to the gold finger 72. By pressing the wing rods 66 on both sides of the slider 6, the slider 6 is driven to move, so that the sliding contact end of the spring 8 slides on the surface of the gold finger 72 at the bottom of the PCB board 7, thereby realizing the on-off operation of the wiring harness 2. A return spring 5 is provided in the front end of the shell 1, and the return spring 5 is installed between the front end of the inner wall of the shell 1 and the front end of the slider 6. When the shell is pulled out from the seat belt plug-in end, the slider 6 is reset by the return spring 5, and the welding end of the PCB board 7 is welded to one end of the wiring harness 2. The other end of the wiring harness 2 passes through the outlet, and the other end of the wiring harness 2 is connected to the terminal in the terminal sleeve 4. A plurality of cable ties 3 are arranged at intervals on the surface of the wiring harness 2.

[0049] The shell 1 comprises an upper cover 11 and a lower cover 12, the upper cover 11 is uniformly provided with a protruding upper hanging table 111 at the front and rear ends, the lower cover 12 is provided with a lower buckle ear 121 at the corresponding position of each upper hanging table 111, and each upper hanging table 111 is buckled with the corresponding lower buckle ear 121; the middle part of the left and right sides of the upper cover 11 is provided with an upper buckle ear 115, and the middle part of the left and right sides of the lower cover 12 is provided with a lower hanging table 122, the shell 1 adopts an upper and lower buckling structure design, which is convenient to assemble, and the setting mode of the hanging table and the buckle ear is exchanged in the middle part of the upper cover 11 and the lower cover 12, so as to realize staggered buckling connection, thereby increasing the firmness of the interlocking of the upper cover 11 and the lower cover 12, and making the shell 1 more stable in assembly.

[0050] The inner wall top of the lower cover 12 is provided with a pressing plate column 124, the top end of the pressing plate column 124 is tightly pressed against the PCB board 7 at the inner wall top surface of the upper cover 11 after the upper cover 11 is buckled with the lower cover 12; the middle part of the left and right sides of the upper cover 11 is uniformly provided with a plurality of protruding plate limiting edges 112 according to the contour of the PCB board 7, the PCB board 7 is clamped between the plurality of plate limiting edges 112, and the PCB board 7 is stably positioned and installed at the inner wall top of the upper cover 11 through the cooperation of the plurality of plate limiting edges 112 and the pressing plate column 124, the position of the PCB board 7 is accurately positioned, and the PCB board 7 is prevented from sliding and ensured to be horizontal, thereby effectively ensuring the close contact of the reed 8 and the gold finger 72, ensuring the consistent compression amount of the reed 8, improving the consistency of the product, thereby being beneficial to the sensitivity of the wire harness 2, and also ensuring the service life of the product.

[0051] The middle part of the rear end of the upper cover 11 is provided with a wire pressing cover 117, the top surface of the wire pressing cover 117 is inclined downward at the rear end, the middle part of the rear end of the lower cover 12 is provided with a guide inclined surface 123, the guide inclined surface 123 is parallel to the top surface of the wire pressing cover 117, the guide inclined surface 123 and the wire pressing cover 117 form a wire outlet inclined downward, forming a surrounding structure, which can more effectively prevent dust from entering, and the wire outlet inclined downward can make the wire harness 2 more convenient to wire and install in the vehicle.

[0052] The front end of the sliding block 6 is provided with a hollow groove 64, the front end of the hollow groove 64 is provided with a positioning column two 65, the reset spring 5 is located in the hollow groove 64, one end of the reset spring 5 is inserted with the positioning column two 65, the top of the inner wall of the upper cover 11 is provided with a let go arc groove 116 corresponding to the reset spring 5, the rear end of the let go arc groove 116 is provided with a positioning column one 113, the positioning column one 113 extends into the hollow groove 64 and is inserted with the other end of the reset spring 5, the opening width size of the bottom surface of the hollow groove 64 is smaller than the diameter of the reset spring 5, by setting the reset spring 5 in the hollow groove 64, and limiting the two ends of the reset spring 5 through the positioning column one 113 and the positioning column two 65, the deformation and distortion problem of the reset spring 5 when being pressed is avoided, at the same time, by matching the size of the bottom opening of the hollow groove 64 and the lower opening of the reset spring 5, the reset spring 5 cannot fall out from the bottom after being put into the hollow groove 64, so that the installation difficulty of the reset spring 5 is reduced.

[0053] The sliding block 6 and the wing rod 66 are not connected, and a dynamic guide groove 61 is formed at the gap, the top of the inner wall of the upper cover 11 is provided with a guide rib 114 corresponding to the dynamic guide groove 61, the guide rib 114 is slidably connected with the corresponding dynamic guide groove 61; the sliding block 6 is placed on the top surface of the lower cover 12, and the structure of the sliding block 6 is positioned through the contour shape and the lower cover 12 to realize forward and backward movement and left and right limiting, the sliding block 6 is matched with the lower cover 12 through the outer contour, the freedom degree of the left and right directions of the sliding block 6 is limited, and the sliding block 6 is precisely positioned through the sliding cooperation of the dynamic guide groove 61 and the guide rib 114 of the upper cover 11, so that the sliding direction of the sliding block 6 is consistent, there is no shaking, and the sliding is smooth and consistent;

[0054] The inner wall of the upper cover 11 is provided with a dust screen 118 near the outer wall of the wing rod 66 and parallel to the guide rib 114, the dust screen 118 corresponds to the outlet position and forms a staggered dustproof structure with the guide rib 114 on the same side; in the daily use process, the sliding block 6 will bring dust into the shell 1 from the outlet when sliding, the entering dust is shielded by the dust screen 118 and the guide rib 114, and the space between the dust screen 118 and the guide rib 114 is occupied by the wing rod 66 of the sliding block 6, so that the dust is blocked at the outlet and cannot enter the inside of the shell, and the staggered dustproof structure is realized by the characteristics of the structure.

[0055] The top rear of the sliding block 6 is provided with a fixed column 63 near the left and right sides, the surface of the reed 8 is provided with a positioning hole 81 corresponding to each fixed column 63, the positioning hole 81 is connected with the corresponding fixed column in a gap, the rear end of the reed 8 is inserted into the top rear of the sliding block and is arranged at an acute angle with the top surface of the sliding block.

[0056] The top surface of the slider 6 is provided with a clamping claw 62 on the left and right sides and near the middle, and the PCB 7 is slidably connected between the two clamping claws 62. When the clamping claw 62 is provided, the slider 6 embraces the PCB 7 from the bottom, which can stabilize the sliding and ensure the close connection between the reed 8 and the gold finger 72, reduce the assembly difficulty, and avoid the disconnection of the PCB 7.

[0057] The reed 8 has a U-shaped structure, and two slide contact claws 82 are arranged side by side at the two ends of the reed 8. The slide contact claw 82 has an upwardly protruding arc-shaped structure and is in close contact with the gold finger 72. Two slide contact claws 82 are arranged at each end, which can effectively reduce the assembly size error generated during the production of the reed 8, ensure the reliable performance of the contact, reduce the contact surface, reduce the wear amount, avoid the influence of wear dust on the contact, and also reduce the assembly difficulty and avoid the disconnection of the PCB 7.

[0058] Finally, it should be noted that: the above is only the preferred embodiment of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A seat belt harness, comprising a housing, characterized in that: The left and right sides of the shell are provided with extension openings near the rear, and a wire outlet is provided at the rear of the bottom thereof. The shell is completely closed except for the two extension openings and the wire outlet. A slider is connected to the interior of the shell for sliding along the front-to-back direction. Wing rods are integrally formed at the rear lower part of the left and right sides of the slider, and the wing rods pass through the corresponding extension openings. The slider is slidably arranged on the bottom surface of the PCB board, and the bottom surface of the PCB board is provided with component patches and gold fingers. The top surface of the PCB board is clamped to the top surface of the inner wall of the shell, and a spring is fixedly installed on the top surface of the slider. The sliding contact end of the spring is tilted and tightly adheres to the gold finger. A return spring is provided in the front end of the shell, and the return spring is installed in contact between the front end of the inner wall of the shell and the front end of the slider. The welding end of the PCB board is welded to one end of the wiring harness, and the other end of the wiring harness passes through the wire outlet, and the other end of the wiring harness is connected to the terminal in the terminal sleeve. A plurality of cable ties are arranged at intervals on the surface of the wiring harness.

2. The seat belt harness according to claim 1, wherein: The housing comprises an upper cover and a lower cover, wherein the upper cover is evenly provided with raised upper hanging platforms at both ends thereof, and the lower cover is provided with lower buckle ears at corresponding locations thereof, wherein each upper hanging platform is connected to a corresponding lower buckle ear by a buckle; Upper buckle ears are provided in the middle of the left and right sides of the upper cover, and lower hanging platforms are provided in the middle of the left and right sides of the lower cover.

3. The seat belt harness according to claim 2, wherein: A pressure plate column is provided on the top of the inner wall of the lower cover. After the upper cover is snap-connected to the lower cover, the top end of the pressure plate column presses the PCB board tightly against the top surface of the inner wall of the upper cover.

4. The seat belt harness according to claim 3, wherein: A plurality of raised plate limiting edges are evenly arranged around the top of the inner wall of the upper cover according to the outline of the PCB board, and the PCB board is clamped between the plurality of plate limiting edges.

5. The seat belt harness according to claim 2, wherein: A wire pressing cover is provided in the middle of the rear end of the upper cover, and the top surface of the wire pressing cover is inclined downwardly. A guide slope is provided in the middle of the rear end of the lower cover, and the guide slope is arranged parallel to the top surface of the wire pressing cover. The guide slope and the wire pressing cover form the wire outlet inclined obliquely downward.

6. The seat belt harness according to claim 2, wherein: A hollow groove is provided at the front end of the slider, and a second positioning column is provided at the front end of the hollow groove. The reset spring is in the hollow groove, and one end of the reset spring is plugged into the second positioning column. A yield arc groove is provided at the top of the inner wall of the upper cover corresponding to the reset spring, and a first positioning column is provided at the rear end of the yield arc groove. The first positioning column extends into the hollow groove and is plugged into the other end of the reset spring. The opening width of the bottom surface of the hollow groove is smaller than the diameter of the reset spring.

7. The seat belt harness according to claim 6, wherein: A gap exists between the slider and the wing rod where they are not connected, forming a dynamic guide groove. A guide ridge is provided at the top of the inner wall of the upper cover corresponding to the dynamic guide groove, and the guide ridge is slidably connected to the corresponding dynamic guide groove. The top of the inner wall of the upper cover is close to the outer wall of the wing rod and is provided with a dust shield parallel to the guide edge. The dust shield corresponds to the position of the extension port and forms a staggered dust-proof structure with the guide edge on the same side. The slider is placed on the top surface of the lower cover and realizes the structure of front-back movement and left-right limitation through the contour shape and positioning with the lower cover.

8. The seat belt harness according to claim 7, wherein: Fixed columns are provided at the rear of the top of the slider and near the left and right sides. Positioning holes are provided on the surface of the spring corresponding to the fixing columns. The positioning holes are connected with the corresponding fixing columns with a clearance fit. The rear end of the spring is inserted behind the top surface of the slider and is set at an acute angle to the top surface of the slider.

9. The seat belt harness according to claim 8, wherein: Buckles are symmetrically arranged on the left and right sides of the top surface of the slider and near the middle about the central axis, and the PCB board is slidably connected between the two buckles.

10. The seat belt harness according to claim 1, wherein: The reed is in a U-shaped structure, and two sliding claws are arranged side by side at both ends of the reed. The sliding claws are in an upwardly protruding arc structure and are in close contact with the gold finger.

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