Hoop support for automobile wire harness

Abstract

The invention belongs to the field of automobile wire harness fixing, and particularly relates to an automobile wire harness clamp support which comprises a mounting plate and a mounting head fixedly arranged at the bottom of the mounting plate, a groove is formed in the upper portion of the mounting plate, and multiple sets of fixing assemblies for fixing wire harnesses are arranged in the groove. A locking mechanism used for tightly connecting the mounting head with the automobile body sheet metal part is arranged on the mounting head, the fixing assembly comprises a sliding block arranged in the groove in a sliding mode, and a connecting rod is fixedly arranged on the upper portion of the sliding block. In the process of assembling the wire harness, the double fixing measures of the locking mechanism and the extrusion assembly are utilized, the mounting head can be tightly fixed to the mounting hole in the automobile body sheet metal part, it is guaranteed that the fixing assembly is not prone to shaking under the complex vibration working condition of an automobile, and the wire harness is not prone to shaking; meanwhile, the use positions and angles of the multiple groups of fixing assemblies can be changed by utilizing the adjusting assemblies, and the fixation of multiple wire harnesses in the same row and the multi-point fixation of a single wire harness can be carried out.

Description

Technical Field

[0001] The present invention relates to the field of automotive wire harness fixing, and particularly to a clamp bracket for automotive wire harnesses. Background Art

[0002] In modern automotive industry, the automotive wire harness, as a key component of the vehicle electrical system, undertakes the important functions of transmitting electricity and signals. With the continuous improvement of the intelligence and electrification levels of automobiles, the number and complexity of wire harnesses are increasing day by day, and the rationality of their layout and fixing directly affects the safety, reliability and service life of the whole vehicle.

[0003] During the assembly process of automotive wire harnesses, in order to achieve a firm connection between the wire harness and the body sheet metal parts, currently, it is generally adopted to install a cap at the bottom of the clamp and insert the cap into the installation hole of the body sheet metal part. This installation method is widely used in automotive production and manufacturing due to its relatively simple operation.

[0004] However, there are certain deficiencies in the existing fixing structure between the cap and the installation hole of the body sheet metal part. During the actual driving of the vehicle, it is inevitable to encounter continuous vibrations generated from various aspects such as road surface bumps and engine operation. In such a complex vibration environment, since the cap and the installation hole are mainly fixed by interference fit or simple snap structures, the vibration will cause repeated impact forces and relative displacements between the two, resulting in the cap gradually loosening or even falling off. Once the cap is not firmly installed in the installation hole, it may cause problems such as wire harness shaking and abnormal noise. In severe cases, it may even cause the wire harness to rub against surrounding components and damage the insulation layer of the wire harness. Secondly, when multiple clamps are integrated on the existing cap, only multiple wire harnesses are fixed, and it is inconvenient to reasonably adjust the fixing conditions of the wire harness according to different wire harnesses, thus reducing its applicability. Summary of the Invention

[0005] In view of the above problems, a clamp bracket for automotive wire harnesses provided by an embodiment of the present application can, while facilitating the stable assembly of the wire harness, reasonably adjust the use position and angle of the clamp ring or tie strap according to the actual layout of the wire harness, and is convenient for fixing multiple wire harnesses in the same row and multi-point fixing of a single wire harness.

[0006] To achieve the above object, the embodiment of the present application provides the following technical solution: The present invention provides a clamp bracket for automotive wire harnesses, including a mounting plate and a mounting head fixedly provided at the bottom of the mounting plate. A groove is provided in the upper part of the mounting plate, and multiple fixing components for fixing the wire harness are arranged in the groove. A locking mechanism for tightly connecting it with the body sheet metal part is provided on the mounting head.

[0007] The fixing component includes a slider slidably arranged in the groove, and a connecting rod is fixedly provided at the upper part of the slider.

[0008] A cavity is formed inside the mounting head. The locking mechanism includes two moving blocks symmetrically distributed left and right in the cavity. The bottom of the moving block penetrates out of the cavity and is fixedly provided with a limiting block. The mounting head is also provided with an extrusion assembly for extruding the limiting block.

[0009] An adjustment assembly for adjusting the position of the fixing assembly is arranged in the groove.

[0010] The mounting head is tightly locked on the body sheet metal part through the locking mechanism. The cooperation of multiple groups of fixing assemblies and adjustment assemblies can be used for fixing multiple wire harnesses in the same row and multi-point fixing of a single wire harness.

[0011] According to an advantageous embodiment, a clamp ring is fixedly arranged on the upper part of the connecting rod. Installation blocks are fixedly arranged at both ends on the left side of the clamp ring. The corresponding two installation blocks are connected by bolts.

[0012] According to an advantageous embodiment, a cable tie is inserted through the connecting rod.

[0013] According to an advantageous embodiment, two strip-shaped openings symmetrically distributed front and back and communicating with the groove are formed in the upper part of the mounting plate. A limiting groove is formed in the rear side of the upper part of the mounting plate. The bolt is used in cooperation with the strip-shaped opening and the limiting groove, and the bottom end of the bolt is located in the two strip-shaped openings.

[0014] According to an advantageous embodiment, the locking mechanism further includes two T-shaped rods symmetrically distributed left and right and fixedly arranged in the cavity. The moving block is slidably connected with the T-shaped rod. A first return spring is sleeved on the outer side of the T-shaped rod. Two ends of the first return spring are respectively connected with the inner wall of the cavity and one side of the moving block. Two guiding openings one symmetrically distributed left and right are formed in the bottom of the mounting head. The bottom of the moving block penetrates into the guiding opening one. Rectangular openings communicating with the cavity are formed at both left and right ends on the outer side of the mounting head.

[0015] According to an advantageous embodiment, the extrusion assembly includes a second return spring fixedly arranged at the top end inside the cavity. A frustum is fixedly arranged at the bottom end of the second return spring. The upper end diameter of the frustum is larger than the lower end diameter. Two inverted L-shaped connecting blocks symmetrically distributed left and right are fixedly arranged on the upper part of the frustum.

[0016] According to an advantageous embodiment, the extrusion assembly further includes a fastening ring threadedly arranged on the outer side of the mounting head. Guiding openings two communicating with the cavity are formed at both front and back ends on the outer side of the mounting head. The side of the connecting block far away from the frustum penetrates through the guiding opening two and its upper part abuts against the inside of the fastening ring. Concave marks for increasing friction are arranged on the outer side of the fastening ring.

[0017] According to an advantageous embodiment, the upper ends of the sides of the two moving blocks close to each other are both in a slope shape for cooperating with the frustum, and the sides of the two limiting blocks away from each other are both in a slope shape.

[0018] According to a preferred embodiment, the adjusting assembly includes a limiting plate slidably disposed inside the groove. A plurality of tooth blocks are fixedly arranged at the rear side of the limiting plate in a linear array. Two moving rods symmetrically distributed left and right are fixedly arranged at the front side of the limiting plate. One ends of the two moving rods far away from the limiting plate both penetrate out of the groove and are jointly fixedly provided with a pulling plate. A third return spring is sleeved on the outer side of the moving rod, and two ends of the third return spring are respectively connected with the inner wall of the groove and the limiting plate.

[0019] According to a preferred embodiment, a plurality of tooth grooves for cooperating with the tooth blocks are formed at the front side and the left side of the slider, and the tooth grooves located at the front side of the slider are clamped with the corresponding tooth blocks.

[0020] Compared with the prior art, a cable clamp bracket for an automobile wire harness provided by an embodiment of the present invention has the following beneficial effects: 1. During the process of assembling the wire harness, by means of the double fixing measures of the locking mechanism and the pressing assembly, the mounting head can be tightly fixed on the mounting hole of the vehicle body sheet metal part, ensuring that the fixing assembly is not prone to shaking and causing the wire harness to loosen under the complex vibration conditions of the automobile. At the same time, the adjusting assembly can change the use positions and angles of multiple groups of fixing assemblies, and can fix multiple wire harnesses in the same row and perform multi-point fixing of a single wire harness.

[0021] 2. In the present invention, a locking mechanism and a pressing assembly are provided. By rotating the fastening ring so that its bottom end is closely attached to the end face of the vehicle body sheet metal part, the limiting block can be driven to move to form an inverted buckle structure with the bottom of the vehicle body sheet metal part, ensuring the fastening property after the mounting head is installed in the mounting hole, so that the mounting head and the vehicle body sheet metal part can be firmly connected under the complex vibration conditions of the automobile, thus ensuring the fixing effect on the wire harness.

[0022] 3. In the present invention, a fixing assembly and an adjusting assembly are provided. Multiple groups of cable clamp rings or cable ties are used to facilitate the fixing of multiple wire harnesses, improving the assembly efficiency of the wire harness. At the same time, through the cooperation of the tooth blocks and the tooth grooves, the use positions and angles of the cable clamp rings or cable ties can be reasonably adjusted according to the actual layout of the wire harness, facilitating the fixing of multiple wire harnesses in the same row and the multi-point fixing of a single wire harness. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the present invention.

[0024] Figure 2 It is a cross-sectional structural diagram of the mounting head from the first perspective of the present invention.

[0025] Figure 3 It is a cross-sectional structural diagram of the mounting head from the second perspective of the present invention.

[0026] Figure 4 It is a cross-sectional structural diagram of the mounting plate of the present invention.

[0027] Figure 5 This is the state diagram of the clamp ring after rotation in the present invention.

[0028] Figure 6 This is the connection structure diagram of the bolt and the limit groove after the clamp ring rotates in the present invention.

[0029] Figure 7 This is the connection structure diagram of the cable tie and the mounting plate in the present invention.

[0030] Figure 8 This is the installation structure diagram of the mounting head and the vehicle body sheet metal part in the present invention.

[0031] Figure 9 This is the installation sectional structure diagram of the mounting head and the vehicle body sheet metal part in the present invention.

[0032] Reference numerals in the figure: 1, mounting plate; 2, mounting head; 3, groove; 4, fixing component; 41, slider; 42, connecting rod; 43, clamp ring; 44, mounting block; 45, bolt; 46, cable tie; 5, locking mechanism; 51, moving block; 52, limiting block; 53, T-shaped rod; 54, first return spring; 55, extrusion component; 551, second return spring; 552, frustum; 553, connecting block; 554, fastening ring; 6, adjusting component; 61, limiting plate; 62, tooth block; 63, moving rod; 64, pulling plate; 65, third return spring; 7, strip-shaped opening; 8, limit groove; 9, tooth groove. Detailed implementation manners

[0033] The following will Figure 1 - Figure 9 make a further detailed description of the present application.

[0034] Please refer to Figure 1 and Figure 4 , a cable tie bracket for an automotive wire harness, including a mounting plate 1 and a mounting head 2 fixedly arranged at the bottom of the mounting plate 1. A groove 3 is formed in the upper part of the mounting plate 1, and a plurality of fixing components 4 for fixing the wire harness are arranged in the groove 3. A locking mechanism 5 for tightly connecting the mounting head 2 with the vehicle body sheet metal part is arranged on the mounting head 2.

[0035] Refer to Figure 2 and Figure 3, a cavity is formed inside the mounting head 2. The locking mechanism 5 includes two moving blocks 51 symmetrically distributed left and right in the cavity. The bottom of the moving block 51 penetrates out of the cavity and is fixedly provided with a limiting block 52. One side of the two limiting blocks 52 facing away from each other is in a slope shape. The locking mechanism 5 further includes two T-shaped rods 53 symmetrically distributed left and right and fixedly provided in the cavity. The moving block 51 is slidably connected to the T-shaped rod 53. A first return spring 54 is sleeved on the outer side of the T-shaped rod 53. Two ends of the first return spring 54 are respectively connected to the inner wall of the cavity and one side of the moving block 51. Two guiding openings 1 are symmetrically distributed left and right at the bottom of the mounting head 2. The bottom of the moving block 51 penetrates into the guiding opening 1. Rectangular openings communicating with the cavity are provided at both left and right ends on the outer side of the mounting head 2.

[0036] When installing the mounting head 2 into the mounting hole on the body sheet metal part, insert the mounting head 2 vertically downward into the mounting hole. When the limiting block 52 contacts the edge of the mounting hole, due to the slope shape of one side of the two limiting blocks 52 facing away from each other, the inner wall of the mounting hole applies an inward oblique thrust to the limiting block 52, prompting the limiting block 52 to drive the moving block 51 to slide on the T-shaped rod 53 and stretch the first return spring 54. As the mounting head 2 continues to be inserted, when the limiting block 52 completely passes through the mounting hole, the limiting block 52 is no longer squeezed by the inner wall of the mounting hole. At this time, the elastic force of the first return spring 54 is used to push the moving block 51 to slide outward and reset along the T-shaped rod 53, thereby driving the limiting block 52 to move outward and catch on the bottom of the body sheet metal part to form an inverted buckle structure, and then the mounting head 2 can be positioned on the mounting hole of the body sheet metal part to prevent it from being pulled out upward to achieve preliminary fixation (as Figure 8 shown).

[0037] Refer to Figure 1 , Figure 2 and Figure 3 , an extrusion assembly 55 for extruding the limiting block 52 is further provided on the mounting head 2. The extrusion assembly 55 includes a second return spring 551 fixedly provided at the top end inside the cavity. A frustum 552 is fixedly provided at the bottom end of the second return spring 551. The upper end diameter of the frustum 552 is larger than the lower end diameter. Two inverted L-shaped connecting blocks 553 symmetrically distributed left and right are fixedly provided on the upper part of the frustum 552. The upper ends of one side of the two moving blocks 51 facing each other are in a slope shape for cooperating with the frustum 552.

[0038] Refer to Figure 2 and Figure 3 , the extrusion assembly 55 further includes a fastening ring 554 threadedly arranged on the outer side of the mounting head 2. Guiding openings 2 communicating with the cavity are provided at both front and rear ends on the outer side of the mounting head 2. One side of the connecting block 553 away from the frustum 552 penetrates through the guiding opening 2 and its upper part abuts against the inside of the fastening ring 554. Dents for increasing friction are provided on the outer side of the fastening ring 554.

[0039] After initially positioning the installation head 2 on the installation hole of the vehicle body sheet metal, the operator can rotate the fastening ring 554 to move it downward. When the fastening ring 554 moves downward along the outer side of the installation head 2, it will exert a downward pressure on the connecting block 553 to drive it downward. The downward movement of the connecting block 553 drives the frustum 552 to move downward against the resistance of the second return spring 551. During the downward movement of the frustum 552, due to its wedge-shaped structure with a larger upper diameter and a smaller lower diameter, it closely fits with the upper slope surface of the moving block 51. As the frustum 552 continues to move downward, the extrusion force on the slope surface of the moving block 51 gradually increases, forcing the moving block 51 to slide outward along the T-shaped rod 53 against the resistance of the first return spring 54, and at the same time driving the bottom limiting block 52 to expand further outward. When the moving block 51 slides to one side and contacts the inner wall of the cavity, the frustum 552 continues to move downward and will completely fit with the vertical section on the outer side of the moving block 51 to limit the moving block 51, thereby limiting the limiting block 52. When the bottom end of the fastening ring 554 is in close contact with the upper part of the vehicle body sheet metal, stop rotating the fastening ring 554. At this time, through the cooperation of the fastening ring 554 and the limiting block 52, the installation head 2 can be firmly fixed on the installation hole (as Figure 9 shown), ensuring that the installation head 2 is firmly connected to the vehicle body sheet metal without loosening under the complex vibration conditions of the vehicle.

[0040] When the installation head 2 needs to be disassembled, just rotate the fastening ring 554 in the reverse direction. At this time, the second return spring 551 can be used to drive the frustum 552 to move upward and reset, thereby canceling the extrusion on the moving block 51. The first return spring 54 is used to drive the limiting block 52 to reset. Then, the operator can squeeze the two moving blocks 51 through the rectangular opening to make the two limiting blocks 52 approach each other, and then the installation head 2 can be pulled out of the installation hole, which is simple and convenient.

[0041] Refer to Figure 4 and Figure 5 , the fixing component 4 includes a slider 41 slidably arranged in the groove 3. The upper part of the slider 41 is fixedly provided with a connecting rod 42. The upper part of the connecting rod 42 is fixedly provided with a clamping ring 43. Both ends of the left side of the clamping ring 43 are fixedly provided with mounting blocks 44. The corresponding two mounting blocks 44 are connected by bolts 45.

[0042] Refer to Figure 1 , Figure 5 and Figure 7 , two strip-shaped openings 7 that are symmetrically distributed front and back and communicate with the groove 3 are provided in the upper part of the mounting plate 1. A limiting groove 8 is provided at the rear side of the upper part of the mounting plate 1. The bolts 45 are used in cooperation with the strip-shaped openings 7 and the limiting groove 8, and the bottom ends of the bolts 45 are located in the two strip-shaped openings 7.

[0043] When installing the installation head 2 and fixing the wire harness, directly pass the wire harness through the corresponding clamp ring 43, and then pass the bolt 45 through the two mounting blocks 44 and make its bottom end located in the two strip-shaped openings 7 (as Figure 1 shown), so that when the staff screws the nut onto the bolt 45, the bolt 45 is not likely to shake. During the process of screwing the nut onto the bolt 45, the clamp ring 43 will be squeezed to gradually clamp the wire harness, so that the wire harness can be stably fixed inside the clamp ring 43. Thus, the installation of multiple clamp rings 43 can be completed through one installation hole, and multiple wire harnesses can be fixed without using too many installation heads 2, thereby improving the assembly efficiency of the wire harness.

[0044] To further meet the fixing requirements, considering the possible tying of the wire harness with the cable tie 46 for different types of wire harnesses, refer to Figure 4 and Figure 7 , the connecting rod 42 can also be inserted with a cable tie 46.

[0045] When fixing the wire harness, the staff can pass the wire harness through the cable tie 46, and then it is more convenient to fix the wire harness by using the cable tie 46, which is faster than using the bolt 45.

[0046] Refer to Figure 1 and Figure 4 , an adjusting component 6 for adjusting the position of the fixing component 4 is arranged in the groove 3. The adjusting component 6 includes a limiting plate 61 slidably arranged inside the groove 3. A plurality of tooth blocks 62 distributed in a linear array are fixedly arranged on the rear side of the limiting plate 61. Two moving rods 63 symmetrically distributed left and right are fixedly arranged on the front side of the limiting plate 61. One ends of the two moving rods 63 far away from the limiting plate 61 both penetrate out of the groove 3 and are jointly fixedly provided with a pulling plate 64. A third return spring 65 is sleeved on the outer side of the moving rod 63, and both ends of the third return spring 65 are connected with the inner wall of the groove 3 and the limiting plate 61 respectively.

[0047] Refer to Figure 4 , a plurality of tooth grooves 9 which are matched with the tooth blocks 62 are arranged on the front side and the left side of the slider 41, and the tooth grooves 9 located on the front side of the slider 41 are clamped with the corresponding tooth blocks 62.

[0048] When fixing the wire harness, the staff can pull the pull plate 64 to drive the moving rod 63 to move. The movement of the moving rod 63 drives the limiting plate 61 to move and compress the third reset spring 65. The movement of the limiting plate 61 drives the tooth block 62 to move out of the corresponding tooth groove 9, so that the limitation of the slider 41 can be cancelled, and the slider 41 can slide freely in the groove 3. According to the actual assembly requirements of the wire harness, the staff manually pushes the slider 41 to slide in the groove 3 to adjust the clamp ring 43 to a suitable position. After the slider 41 moves to a suitable position, the pull plate 64 is released. The elastic force of the third reset spring 65 can drive the limiting plate 61 to reset, so that the corresponding tooth block 62 is re-engaged with the tooth groove 9 to re-limit the slider 41, making the assembly of the wire harness more convenient.

[0049] When multi-point fixing of a single wire harness is required, after pulling the limiting plate 61 to cancel the limitation of the slider 41, the three sliders 41 can be rotated so that the three sliders 41 rotate ninety degrees (as Figure 5 shown), and then the limiting plate 61 is released to re-limit the slider 41. At this time, the wire harness can be passed through the three clamp rings 43 or tie straps 46 at the same time, so that multi-point fixing of a single wire harness can be achieved. If the clamp ring 43 is used to fix the wire harness, the bottom end of the bolt 45 is located in the limiting groove 8 (as Figure 6 shown). Then when the nut is screwed onto the bolt 45, the bolt 45 is not easy to shake, which will not affect the effect of multi-point fixing of a single wire harness through multiple clamp rings 43.

[0050] During specific operation, when the installation head 2 is vertically inserted downward into the installation hole on the vehicle body sheet metal part, it will drive the limiting block 52 to pass through the installation hole. At this time, the elastic force of the first reset spring 54 can drive the limiting block 52 to move outward and be stuck at the bottom of the vehicle body sheet metal part to form an inverted buckle structure, so that the installation head 2 can be positioned on the installation hole of the vehicle body sheet metal part to prevent it from slipping out upward to achieve preliminary fixation.

[0051] Then the staff rotates the fastening ring 554 so that the fastening ring 554 moves downward. At this time, the extrusion of the frustum 552 on the moving block 51 can drive the two limiting blocks 52 to expand further outward. When the bottom end of the fastening ring 554 is in close contact with the upper part of the vehicle body sheet metal part, the rotation of the fastening ring 554 is stopped. At this time, through the cooperation of the fastening ring 554 and the limiting block 52, the installation head 2 can be firmly fixed on the installation hole to ensure that the installation head 2 is firmly connected to the vehicle body sheet metal and does not loosen under the complex vibration conditions of the vehicle.

[0052] Next, the wire harness can be passed through the clamp ring 43 or the cable tie 46. The wire harness is clamped and fixed by using the cable tie 46 and the clamp ring 43. At the same time, the adjustment assembly 6 can reasonably adjust the use positions of multiple clamp rings 43 or cable ties 46 according to the assembly situation of the wire harness, which is convenient for fixing multiple wire harnesses in the same row and multi-point fixing of a single wire harness.

[0053] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are equally included in the patent protection scope of the present invention.

Claims

1. A clamp bracket for an automotive wiring harness, comprising a mounting plate and a mounting head fixedly arranged at the bottom of the mounting plate, wherein a groove is formed in the upper part of the mounting plate, and it is characterized in that: A groove is formed in the upper part of the mounting plate, and a plurality of fixing components for fixing the wire harness are arranged in the groove. A locking mechanism for tightly connecting the mounting head to the body sheet metal is arranged on the mounting head. The fixing component includes a slider slidably arranged in the groove, and a connecting rod is fixedly arranged on the upper part of the slider. A cavity is formed inside the mounting head. The locking mechanism includes two moving blocks symmetrically distributed left and right in the cavity. The bottom of the moving block penetrates out of the cavity and is fixedly provided with a limiting block. An extrusion component for extruding the limiting block is also arranged on the mounting head. An adjusting component for adjusting the position of the fixing component is arranged in the groove. The mounting head is tightly locked on the body sheet metal through the locking mechanism. With the cooperation of multiple fixing components and the adjusting component, the fixing of multiple wire harnesses in the same row and the multi-point fixing of a single wire harness can be carried out.

2. The cable tie bracket for an automotive wiring harness according to claim 1, wherein A clamping ring is fixedly arranged on the upper part of the connecting rod. Installation blocks are fixedly arranged at both ends on the left side of the clamping ring, and the corresponding two installation blocks are connected by bolts.

3. The hose clamp bracket for automotive wiring harness according to claim 1, characterized in that, A cable tie is inserted through the connecting rod.

4. The clamp bracket for automotive wire harness according to claim 2, characterized in that, Two strip-shaped openings symmetrically distributed front and rear and communicating with the groove are formed in the upper part of the mounting plate. A limiting groove is formed in the rear side of the upper part of the mounting plate. The bolt is used in cooperation with the strip-shaped opening and the limiting groove, and the bottom end of the bolt is located in the two strip-shaped openings.

5. The cable tie bracket for an automotive wiring harness according to claim 1, wherein, The locking mechanism further includes two T-shaped rods symmetrically distributed left and right and fixedly arranged in the cavity. The moving block is slidably connected to the T-shaped rod. A first return spring is sleeved on the outer side of the T-shaped rod, and both ends of the first return spring are respectively connected to the inner wall of the cavity and one side of the moving block. Two guiding openings one symmetrically distributed left and right are formed at the bottom of the mounting head. The bottom of the moving block penetrates into the guiding opening one. Rectangular openings communicating with the cavity are formed at both ends on the outer side of the mounting head.

6. The clamp bracket for an automotive wiring harness according to claim 1, characterized in that, The extrusion component includes a second return spring fixedly arranged at the top end inside the cavity. A frustum is fixedly arranged at the bottom end of the second return spring, and the upper end diameter of the frustum is larger than the lower end diameter. Two inverted L-shaped connecting blocks symmetrically distributed left and right are fixedly arranged on the upper part of the frustum.

7. The cable tie bracket for an automotive wiring harness according to claim 6, wherein, The extrusion component further includes a fastening ring threadedly arranged on the outer side of the mounting head. Guiding openings two communicating with the cavity are formed at both ends front and rear on the outer side of the mounting head. The side of the connecting block away from the frustum penetrates through the guiding opening two and its upper part abuts against the inside of the fastening ring. Dents for increasing friction are arranged on the outer side of the fastening ring.

8. The clamp bracket for an automotive wiring harness according to claim 7, wherein, The upper ends of the sides where the two moving blocks are close to each other are both in a slope shape for cooperating with the frustum, and the sides where the two limiting blocks are away from each other are both in a slope shape.

9. The clamp bracket for automotive wiring harness according to claim 2, wherein The adjusting component includes a limiting plate slidably arranged inside the groove. A plurality of tooth blocks distributed in a linear array are fixedly arranged on the rear side of the limiting plate. Two moving rods symmetrically distributed left and right are fixedly arranged on the front side of the limiting plate. The ends of the two moving rods away from the limiting plate both penetrate out of the groove and are jointly fixedly provided with a pulling plate. A third return spring is sleeved on the outer side of the moving rod, and both ends of the third return spring are respectively connected to the inner wall of the groove and the limiting plate.

10. The clamp bracket for automotive wire harness according to claim 9, characterized in that, A plurality of tooth grooves for cooperating with the tooth blocks are formed on the front side and the left side of the slider, and the tooth grooves on the front side of the slider are engaged with the corresponding tooth blocks.

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