Automobile wire harness tail clamp

Abstract

The utility model belongs to the technical field of pencil production equipment, concretely is a kind of automobile pencil tail clamp, including tail clamp body, tail clamp body includes first shell and second shell, and the one end of first shell and second shell is rotatably connected by connecting portion, and the other end is free opening and closing end;Free opening and closing end is equipped with the lock catch structure of mutual cooperation, and the both ends of tail clamp body are equipped with first clamping part and second clamping part respectively, first clamping part is used to clamp connector tail portion protrusion, and second clamping part is used to clamp corrugated pipe;First shell and second shell form pencil passageway after closing, and pencil passageway inner wall is equipped with at least one pencil fixing unit, and pencil fixing unit includes rib and wire slot arranged on rib, and wire slot shape is matched with single wire outer diameter, and the vibration of terminal on connector interior by electric wire transmission is greatly reduced by pencil fixing unit, to reduce the friction between terminal and opposite sensor, controller and other parts due to vibration, to reduce the contact failure generated thereby.

Description

Technical Field

[0001] This utility model belongs to the technical field of wire harness production equipment, specifically an automotive wire harness tail clamp. Background Technology

[0002] As the neural network of a vehicle, automotive wiring harnesses play a crucial role in power distribution and signal transmission. Stable signal transmission is essential for good vehicle handling and safety performance. Current automotive wiring harness connectors only connect the connector and the corrugated tube at both ends for aesthetic purposes, neglecting to address the terminal wear and deformation caused by wiring harness vibration. The resulting "poor contact" is a long-standing and difficult problem in automotive wiring harnesses, significantly impacting the overall quality of the vehicle. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides an automotive wiring harness tail clip, which features a simple structure and convenient use. By setting a wiring harness fixing unit inside the tail clip body, it achieves wire positioning, reduces the wear and deformation of the sensors and actuators opposite to the wire harness connector caused by vibration transmitted through the wires to the terminals in the wiring harness connector, solves the problems mentioned in the background technology, and improves the quality of automotive products.

[0004] This utility model provides the following technical solution: a tail clip for automotive wiring harnesses, comprising a tail clip body, the tail clip body comprising a first housing and a second housing, one end of the first housing and the second housing being rotatably connected by a connecting part, and the other end being a freely opening and closing end; the freely opening and closing end is provided with a locking structure that cooperates with each other to lock the first housing and the second housing in a closed state; the two ends of the tail clip body are respectively provided with a first snap-fit ​​part and a second snap-fit ​​part, the first snap-fit ​​part being used to snap-fit ​​the tail protrusion of a connector, and the second snap-fit ​​part being used to snap-fit ​​a corrugated tube; after the first housing and the second housing are closed, a wiring harness channel is formed, the inner wall of the wiring harness channel is provided with a wiring harness fixing unit, and at least one wiring harness fixing unit is provided in the first housing and the second housing, the wiring harness fixing unit comprising a rib and a wire groove provided in the rib, the shape of the wire groove matching the outer diameter of a single wire.

[0005] Multiple locking structures are used for the mechanical closure of the first and second housings. The first and second locking parts are used for the connection of the tail clip with the connector and the bellows, respectively. The wire positioning is achieved by the wire harness fixing unit in the tail clip body, which greatly reduces the wear of the terminal and the contact parts of the sensor and actuator on the opposite side caused by the transmission of vibration.

[0006] At least one groove is provided on each rib. When the first and second housings are closed, the same wire is clamped from the front and back axially by the grooves on the ribs of different housings.

[0007] The design of the cable trays uses physical space isolation to prevent multiple wires from contacting and rubbing against each other. This reduces vibration transmitted through the wires, thereby reducing wear and tear on the contact points between the terminals and their counterparts caused by vibration, and reducing the resulting poor contact.

[0008] At least one shell contains multiple ribs, i.e., two or more, distributed at intervals along the axial direction, while the other shell contains fewer ribs than or equal to the former; when closed, the ribs in the two shells are embedded in the space between the ribs of the other shell.

[0009] The ribs include left ribs in the first housing and right ribs in the second housing. The number of left ribs is n (n≧1), the number of right ribs is m, m≥n, the number of first grooves on each left rib is a, the number of second grooves on each right rib is b, a≧b, the length of the line segment between two adjacent ribs in the same housing is L, the straight-line distance between the same adjacent ribs in the same housing is D, L>D, and when the tail clip body is closed, the left and right ribs do not directly contact each other.

[0010] The inner wall of the second housing has two right ribs arranged side by side along the axial direction, and the corresponding second grooves of the two right ribs are coaxially aligned one by one, forming a first gap between the two right ribs; the inner wall of the first housing has a left rib, and the first groove on the left rib is staggered with the second groove of the right rib.

[0011] When the tail clamp is closed, the left rib is inserted axially into the first gap between the two right ribs.

[0012] After the tail clamp is closed, for the same conductor, although the left rib of the first housing and the right rib of the second housing do not contact each other, they form segmented support points through the coaxial groove. When the conductor is subjected to vibration, it will be subjected to the following in sequence: radial pressure of the left rib; reverse constraint force of the right rib; a≧b, which facilitates the installation of the conductor into the groove in the other housing when closed, ensuring that the wire bundle will not be squeezed and deformed due to misalignment when closed; L>D, the conductor forms a pre-tightened bending section between adjacent right ribs, which makes the wire bundle elastically bend to provide continuous tension. The axial tension increases the reverse pressure of the conductor and the groove contact surface. Unlike the loose placement of the conductor in the traditional tail clamp, the actual length of the conductor between adjacent ribs in this design is greater than its spatial straight distance, thereby achieving self-tightening fixation through geometric interference.

[0013] The top surface of the rib is wavy, including alternating peaks and troughs. The peaks include a top area and two transition areas on both sides. The top area is a plane. The troughs include a bottom area and two transition areas on both sides. The bottom area is a plane. Its radius of curvature matches the outer diameter of the conductor. The peaks and troughs on the left rib are staggered with the peaks and troughs on the right rib.

[0014] The top surface of the rib is wavy, including alternating peaks and troughs. The peaks include a top area and two transition areas on both sides. The top area is an arc surface. The troughs include a bottom area and two transition areas on both sides. The bottom area is an arc surface. Its radius of curvature matches the outer diameter of the conductor. The peaks and troughs on the left rib are staggered with the peaks and troughs on the right rib.

[0015] The wavy top transition area of ​​the rib is designed with rounded edges to avoid damaging the wire sheath. When the tail clip is closed, the left rib is inserted axially into the first gap between the two right ribs without contacting the right ribs.

[0016] The second snap-fit ​​portion is provided with a pair of clips and a pair of matching clip grooves. When closed, the clip grooves are used to accommodate the clips and can further define the bellows.

[0017] The tail clip body has an observation window on its side wall where the wiring harness channel is located. The observation window is made of transparent material. The observation window is connected to the tail clip body by an integral molding process. The remaining parts of the tail clip body are made of opaque or transparent material, which can be changed according to the usage scenario and is not limited.

[0018] Compared with the prior art, the present invention has the following advantages: an automotive wiring harness tail clip with multiple sets of locking structures for mechanical closure of the first housing and the second housing, a first snap-fit ​​part and a second snap-fit ​​part for connecting the tail clip to the connector / corrugated tube, and a wiring harness fixing unit provided in the tail clip body to achieve wire positioning, reduce vibration transmission, and thereby reduce poor contact caused by wear between the terminal and the contact part of the opposite component. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of an automotive wiring harness tail clip when it is opened, according to a specific embodiment 1 of this utility model.

[0020] Figure 2 This is a three-dimensional structural diagram of an automotive wiring harness tail clip when it is opened, which is a specific embodiment 2 of this utility model.

[0021] In the figure: 1. Tail clip body; 2. First housing; 3. Second housing; 4. Connector; 5. Locking structure; 6. First snap-fit ​​part; 7. Second snap-fit ​​part; 8. Clip; 9. Clip groove; 10. Wire harness channel; 11. Wire harness fixing unit; 12. Rib; 121. Left rib; 122. Right rib; 13. Wire groove; 14. First gap; 15. Wavy top surface. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Specific Implementation Example 1: Please refer to Figure 1 A tail clip for automotive wiring harnesses includes a tail clip body 1, which comprises a first housing 2 and a second housing 3. One end of the first housing 2 and the second housing 3 are rotatably connected by a connecting part 4, and the other end is a freely opening and closing end. The freely opening and closing end is provided with a locking structure 5 that cooperates with each other to lock the first housing 2 and the second housing 3 in a closed state. The two ends of the tail clip body 1 are respectively provided with a first snap-fit ​​part 6 and a second snap-fit ​​part 7. The first snap-fit ​​part 6 is used to snap-fit ​​the protrusion at the tail of the connector, and the second snap-fit ​​part 7 is used to snap-fit ​​the corrugated tube. When the first housing 2 and the second housing 3 are closed, a wiring harness channel 10 is formed. The inner wall of the wiring harness channel 10 is provided with a wiring harness fixing unit 11. At least one wiring harness fixing unit 11 is provided in the first housing 2 and the second housing 3. The wiring harness fixing unit 11 includes a rib 12 and a wire groove 13 provided in the rib 12. The shape of the wire groove 13 matches the outer diameter of a single wire. "Matching" ≠ mathematical "equality", but refers to functional compatibility. A wire harness is composed of multiple wires. This utility model acts on the wires in the wire harness, securing each wire one by one through a wire harness fixing unit.

[0024] The first latching part 6 and the second latching part 7 are limiting protrusions provided on the inner wall of the tail clip body. The first latching part is used to latch the tail of the connector. For the sake of simplicity and clarity in the following description, the limiting protrusions are divided into a first limiting protrusion of the first latching part 6 and a second limiting protrusion of the second latching part 7. In the prior art, the tail of the connector has multiple protrusions. The first limiting protrusions of the first latching part 6 are located at corresponding positions in the first housing and the second housing. When the tail clip body 1 is closed, the first limiting protrusions are precisely locked onto the protrusions at the tail of the connector, realizing the connection with the connector. The second latching part 7 is used to connect with the bellows. The second latching part has a second limiting protrusion to lock the bellows. More optimized, in order to further limit the bellows, the second latching part 7 has a pair of clips 8 and a clip groove 9 for accommodating the clips 8 when closed. The clamp 8 can hold the side wall of the bellows. The gap between the openings of the arc section of the clamp is slightly smaller than the outer diameter of the bellows. This not only holds the bellows but also ensures convenient operation for installing the bellows and prevents the bellows from being excessively squeezed.

[0025] Multiple sets of locking structures 5 are used for the mechanical closure of the first housing 2 and the second housing 3. There must be at least two sets of locking structures, one locking structure is close to the first latching part 6, and the other locking structure is close to the second latching part 7. This means that the locking structures must be located near the openings at both ends of the tail clip body.

[0026] By using the wire harness fixing unit 11 inside the tail clip body 1, wire positioning is achieved, reducing vibration damage.

[0027] At least one groove 13 is provided on each rib 12. When the first housing 2 and the second housing 3 are closed, the same wire is clamped from the front and back axially by the groove 13 on the rib 12 of different housings.

[0028] The design of cable tray 13 avoids contact and friction between multiple wires through physical spatial isolation. This reduces vibration transmitted through the wiring harness, thereby reducing friction caused by vibration between the wiring harness connector terminals and the contact points of the opposite sensors and actuators, and reducing the resulting poor contact.

[0029] At least one shell contains multiple ribs 12, i.e., two or more ribs distributed at intervals along the axial direction, and the number of ribs 12 in another shell is less than or equal to that of the former; when closed, the ribs in the two shells are embedded in the space between the ribs of the opposite shell.

[0030] The ribs include left ribs within the first housing and right ribs within the second housing. The number of left ribs is n, where n ≥ 1, and the number of right ribs is m, where m ≥ n. The maximum value of n is related to the length of the wire harness channel in the tail clip body 1, as well as the thickness of the ribs and the spacing between adjacent right ribs. Figure 1 As shown in the figure, in this specific embodiment, n=1. The attached figure shows that the number of left ribs is 1 and the number of right ribs is m=2. The number of first grooves on each left rib is a, and the number of second grooves on each right rib is b, a≧b. The length of the line segment between two adjacent ribs in the same housing is L, and the straight-line distance between the same adjacent ribs in the same housing is D, L>D. When the tail clamp body is closed, the left and right ribs do not directly contact each other.

[0031] The inner wall of the second housing 3 is provided with two right ribs 122 arranged side by side along the axial direction. The second grooves of the two right ribs 122 are coaxially aligned and a first gap is formed between the two right ribs 122. The inner wall of the first housing 2 is provided with a left rib 121. The first groove on the left rib 121 is staggered with the second groove of the right rib.

[0032] When the tail clamp is closed, the left rib 121 is inserted axially into the first gap between the two right ribs 122.

[0033] The size of the first gap 14 between two adjacent right reinforcing bars is related to the wire diameter, the diameter of the wire harness, and the flexibility of the wire. The larger the wire diameter and the lower the wire flexibility, the larger the gap is required to avoid installation difficulties; the smaller the wire diameter and the higher the wire harness flexibility, the smaller the gap is required to save space.

[0034] After the tail clamp is closed, for the same conductor, although the left rib 121 of the first housing 2 and the right rib 122 of the second housing 3 do not contact each other, they form segmented support points through the coaxial groove. When the wire harness is subjected to vibration, it will be subjected to the following in sequence: radial pressure of the left rib 121; reverse constraint force of the right rib 122; a≧b, which makes it convenient for the conductor to be installed in the groove of the other housing when closed, ensuring that the conductor will not be squeezed and deformed due to misalignment when closed; L>D, the conductor forms a pre-tightened bending section between adjacent right ribs, which makes the conductor elastically bent to provide continuous tension force. The axial tension increases the reverse pressure of the contact surface between the wire harness and the groove. Unlike the loose placement of the conductor in the traditional tail clamp, the actual length of the conductor between adjacent ribs in this design is greater than its spatial straight distance, thereby achieving self-tightening fixation through geometric interference.

[0035] The second snap-fit ​​part 7 is provided with a pair of snap-fit ​​clips 8 and a pair of matching snap-fit ​​grooves 9. When closed, the snap-fit ​​grooves 9 are used to accommodate the snap-fit ​​clips 8, which are used to snap onto the outer wall of the bellows, further defining the bellows.

[0036] The optimal application scenario for this design is when the number of wires in the harness is small, such as 1-5. When there are many wires, each wire needs to be individually clipped into the harness fixing unit, which increases the operation time. Regardless of the number of wires in the harness, current tail clips do not have the structure (fixing unit) designed to fix the wires as in this invention. Therefore, they essentially do not have the function of reducing the transmission of vibration by the wires and thus reducing contact quality problems.

[0037] The tail clip body can be suitable for straight tail clips, where the connector and the bellows are parallel or on the same axis, or it can be suitable for bent tail clips. For example, a right-angle tail clip, where the axes of the first and second locking parts are at 90 degrees, or an angled tail clip, where the angle between the connector and the bellows axis is an appropriate angle, which is a non-right-angled angle.

[0038] When in use, open the tail clip body 1, place the protrusion at the end of the connector into the first locking part 6, and place the corrugated tube into the second locking part 7. The exposed wire harness at the end of the connector, such as... Figure 1The diagram shows the case with only one wire. One end of the wire is inserted into the second groove of a right rib of the second housing 3. The length of the wire segment between two adjacent right ribs in the second housing is L, and the straight-line distance between the same adjacent right ribs in the second housing is D, where L > D. The other end of the wire is inserted into the second groove of another right rib. Since L > D, the wire between the two right ribs is in a bent state. After the tail clamp body is closed, from a vertical angle in space, the first groove and the second groove are staggered, not directly opposite each other. After the wire is fixed, the first housing 2 is closed. The first groove on the left rib of the first housing 1 will be inserted into the first gap 14 without contacting the two right ribs. The first groove of the left rib is inserted into the wire from the other side. The number of first grooves on each left rib is a, and the number of second grooves on each right rib is b, where a ≥ b. Therefore, the bent wire will enter one of the first grooves. At this time, the wire is supported and fixed by three ribs.

[0039] Specific Embodiment 2: The difference between this specific embodiment and Specific Embodiment 1 lies in the change of the shape of the rib and the shape of the groove, as well as the change of the number of grooves.

[0040] The top surface of the rib is a wavy top surface 15, with sharp angles removed and a smooth design, including alternating peaks and troughs. The peaks include the top area and the transition areas on both sides. The top area is flat. The troughs include the bottom area and the transition areas on both sides. The bottom area is flat. Its radius of curvature matches the cross-sectional area of ​​the conductor. The peaks and troughs on the left rib are staggered with the peaks and troughs on the right rib.

[0041] The top surface of the rib is wavy to directly optimize the contact stress of the wire harness and avoid local damage to the wire sheath. When the tail clip is closed, the left rib is inserted axially into the first gap between the two right ribs without contacting the right ribs. There is no gear engagement between the left and right ribs in this application (gear engagement is direct gear meshing transmission); the wavy shape is only used to optimize the distribution of contact stress in the wire harness.

[0042] When the second housing is closed, the flared trough of the first groove (with a larger R1) guides the wire to slide in.

[0043] like Figure 2 The tail clip has four troughs, allowing it to fit cable harnesses with four or fewer wires, such as a three-wire harness composed of AVSS wires, each with a diameter of 0.75 mm².

[0044] Wavy grooves include, but are not limited to, sinusoidal, circular, catenary, or other periodically undulating curved surface topologies, as long as they satisfy the function of fixing the conductor to prevent the transmission of vibration. Specific Implementation Example 3

[0045] The difference between this specific embodiment and Specific Embodiment 2 is that: the top surface of the rib is wavy, including alternating peaks and troughs. The peaks include a top area and transition areas on both sides, and the top area is an arc surface. The troughs include a bottom area and transition areas on both sides, and the bottom area is an arc surface. Its radius of curvature matches the wire diameter. The peaks and troughs on the left rib are staggered with the peaks and troughs on the right rib (wire diameter refers to the cross-sectional area of ​​the wire, not its diameter). Specific Implementation Example 4

[0046] The difference between this specific embodiment and specific embodiment 2 lies in the change of n and the number of grooves on the same rib. When n=2, there are 2 left ribs and m=3 right ribs. The left ribs on the first shell have four to six first grooves, and the two right ribs on the second shell each have three to five second grooves. When the tail clamp is closed, the two left ribs are inserted axially into the first gap between the three right ribs without contacting the right ribs. Specific Implementation Example 5

[0047] The difference between this specific embodiment and specific embodiments 1, 2, 3, and 4 is that: an observation window is provided on the side wall where the wire harness channel 10 of the tail clip body 1 is located, and the observation window is made of transparent material. The observation window is connected to the tail clip body through an integral molding process. The observation window is made of transparent material, while the rest of the tail clip body is made of opaque or transparent material, which can be changed according to the usage scenario and is not limited.

[0048] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. Moreover, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A type of automotive wiring harness tail clip, characterized in that: The device includes a tail clip body, which comprises a first housing and a second housing. One end of the first housing and the second housing are rotatably connected by a connecting part, and the other end is a freely opening and closing end. The freely opening and closing end is provided with a locking structure that cooperates with each other to lock the first housing and the second housing in a closed state. The two ends of the tail clip body are respectively provided with a first snap-fit ​​part and a second snap-fit ​​part. The first snap-fit ​​part is used to snap-fit ​​the tail protrusion of the connector, and the second snap-fit ​​part is used to snap-fit ​​the corrugated tube. When the first housing and the second housing are closed, a wire harness channel is formed. The inner wall of the wire harness channel is provided with a wire harness fixing unit. At least one wire harness fixing unit is provided in the first housing and the second housing. The wire harness fixing unit includes a rib and a wire groove provided in the rib. The shape of the wire groove matches the outer diameter of a single wire.

2. The automotive wiring harness tail clip according to claim 1, characterized in that: At least one groove is provided on each rib. When the first and second housings are closed, the same wire is clamped from the front and back axially by the grooves on the ribs of different housings.

3. The automotive wiring harness tail clip according to claim 2, characterized in that: At least one shell contains multiple ribs that are spaced apart along the axial direction, while the other shell contains fewer ribs than or equal to the former; when closed, the ribs in the two shells are embedded in the space between the ribs of the other shell.

4. The automotive wiring harness tail clip according to claim 3, characterized in that: The ribs include left ribs in the first housing and right ribs in the second housing. The number of left ribs is n, n≧1, and the number of right ribs is m, m≥n. The number of first grooves on each left rib is a, and the number of second grooves on each right rib is b, a≧b. The length of the line segment between two adjacent ribs in the same housing is L, and the straight-line distance between the same adjacent ribs in the same housing is D, L>D. When the tail clip body is closed, the left and right ribs do not directly contact each other.

5. The automotive wiring harness tail clip according to claim 4, characterized in that: The inner wall of the second housing has two right ribs arranged side by side along the axial direction, and the corresponding second grooves of the two right ribs are coaxially aligned one by one, forming a first gap between the two right ribs; the inner wall of the first housing has a left rib, and the first groove on the left rib is staggered with the second groove of the right rib. When the tail clamp is closed, the left rib is inserted axially into the first gap between the two right ribs.

6. The automotive wiring harness tail clip according to claim 4, characterized in that: The top surface of the rib is wavy, including alternating peaks and troughs. The peaks include a top area and two transition areas on both sides. The top area is a plane. The troughs include a bottom area and two transition areas on both sides. The bottom area is a plane. Its radius of curvature matches the outer diameter of the conductor. The peaks and troughs on the left rib are staggered with the peaks and troughs on the right rib.

7. The automotive wiring harness tail clip according to claim 4, characterized in that: The top surface of the rib is wavy, including alternating peaks and troughs. The peaks include a top area and two transition areas on both sides. The top area is an arc surface. The troughs include a bottom area and two transition areas on both sides. The bottom area is an arc surface. Its radius of curvature matches the outer diameter of the conductor. The peaks and troughs on the left rib are staggered with the peaks and troughs on the right rib.

8. The automotive wiring harness tail clip according to claim 5, characterized in that: When the tail clamp is closed, the left rib is inserted axially into the first gap between the two right ribs without contacting the right rib.

9. The automotive wiring harness tail clip according to claim 1, characterized in that: The second snap-fit ​​portion is provided with a pair of clips and a pair of matching clip grooves. When closed, the clip grooves are used to accommodate the clips and can further define the bellows.

10. A car wiring harness tail clip according to any one of claims 1-9, characterized in that: The side wall where the wire harness channel of the tail clip body is located is provided with an observation window, which is made of transparent material.

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