CN217532769U - Wire sheath for sensor wire harness of automobile electric power steering device - Google Patents

Abstract

The utility model discloses an auto electric power assisted steering device sensor is grommet for pencil, including first half casing and the second half casing of being connected and cooperating the tight bellows of clamp with first half casing for the joint with first half casing, form the passageway that lets the pencil pass between first half casing and the second half casing. The utility model discloses an auto electric power assisted steering device sensor is protect wire cover for pencil can improve pencil protecting effect, reduces the fault rate.

Description

Wire sheath for sensor wire harness of automobile electric power steering device

Technical Field

The utility model belongs to the technical field of vehicle a steering system, specifically speaking, the utility model relates to an auto electric power assisted steering device is protect wire cover for sensor pencil.

Background

In recent years, with the promotion of the domestic and foreign large environments, the automobile electric power steering technology is developed day by day. The electric power steering technology has gradually replaced the traditional pure hydraulic power steering technology and the electric control hydraulic power steering technology to become the wind vane developed by the industry. An Electric Power Steering (EPS) is an electromechanical integrated product, which mainly comprises a control unit, a sensor, a mechanical execution element and various wire bundles. In EPS, if functions of a control unit (hereinafter abbreviated as ECU), a sensor, and an actuator are compared with a human body, it can be said that the control unit corresponds to a human brain, the sensor corresponds to a sensory organ, and the actuator corresponds to a motor organ, various types of wire harnesses correspond to nerves and blood vessels.

The conventional EPS sensor harness (hereinafter referred to as a harness) is basically composed of a junction box, a lint tape, a signal wire, a corrugated tube, a buckle and a junction box.

The wire harness is mainly used for connecting the torque angle sensor and the ECU; the information collected by the torque angle sensor is transmitted to the ECU for analysis and judgment, and then a control strategy is given and fed back to the execution unit; it ensures both the transmission of electrical signals and the reliability of the connecting circuit. The EPS sensor wire harness functionally belongs to a signal wire for transmitting a sensor input instruction. The signal wire is a thin wire which does not carry electric power, and the cross section of the wire is only 0.3mm ² . Due to the limitation of a manufacturing process, the lint adhesive tape cannot completely wrap the signal wire inside, the scattered wire is exposed near the junction box, the signal wire is thin and has poor mechanical strength, the wire harness is always in a vibration state in the running process of a vehicle, and the joint of the exposed scattered wire and the inner terminal of the junction box is subjected to alternating shearing force, so that the metal wire has the risk of breakage. The loose wires at the exposed part can cause the damage of the wire harness when being pulled, scratched and impacted by foreign matters under the condition of no protection, thereby causing signal transmission problemsThe problem finally causes the electric power steering system to break down, and the driving safety is influenced.

Secondly, the process of winding the flannelette also has a plurality of disadvantages, such as: poor manufacturability, low efficiency, difficult guarantee of consistency, high labor cost, poor protection effect and the like.

Along with the continuous improvement of the electrification level of the automobile, the quantity and the complexity of automobile wire harnesses are also continuously improved, and the failure rate of the wire harnesses also presents an increasing trend. How to make the wire harness work stably and continuously, reduce the failure rate and improve the reliability has become the problem faced by the automobile wire harness manufacturing industry.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an auto electric power assisted steering device sensor is grommet for pencil, the purpose improves pencil protecting effect, reduces the fault rate.

In order to realize the purpose, the utility model discloses the technical scheme who takes does: a wire sheath for a sensor wire harness of an automobile electric power steering device comprises a first half shell and a second half shell which is connected with the first half shell in a clamping mode and matched with the first half shell to clamp a corrugated pipe, and a channel for the wire harness to penetrate is formed between the first half shell and the second half shell.

The first half shell is provided with a buckle boss, and the second half shell is provided with a buckle hole.

The first half shell and the second half shell are integrally formed in an injection molding mode.

The first half shell is provided with a first hanging buckle, and the second half shell is provided with a second hanging buckle.

The utility model discloses an auto electric power assisted steering device sensor is protect wire cover for pencil can improve pencil protecting effect, reduces the fault rate.

Drawings

The description includes the following figures, the contents shown are respectively:

FIG. 1 is an exploded view of a wire sheath for a sensor harness of an electric power steering apparatus for an automobile according to the present invention;

FIG. 2 is a schematic view of the first housing half;

fig. 3 is a schematic structural view of the second half-shell;

FIG. 4 is a schematic view showing a state of use of the wire sheath for the sensor harness of the electric power steering apparatus for a vehicle according to the present invention;

FIG. 5 is a schematic view of the connection of the first housing half to the second housing half;

labeled as: 1. a first housing half; 2. a second half-shell; 3. buckling a boss; 4. a snap-in hole; 5. a first hanging buckle; 6. a second hanging buckle; 7. a junction box; 8. a bellows; 9. buckling; 10. and a signal line.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, for the purpose of helping those skilled in the art to understand more completely, accurately and deeply the conception and technical solution of the present invention, and to facilitate its implementation.

It should be noted that, in the following embodiments, the "first" and "second" do not represent an absolute distinction relationship in structure and/or function, nor represent a sequential execution order, but merely for convenience of description.

As shown in fig. 1 to 4, the utility model provides a wire sheath for sensor wire harness of automobile electric power steering device, including first half casing 1 and the second half casing 2 that is connected for the joint and cooperates with first half casing 1 and presss from both sides tight bellows 8 with first half casing 1, form the passageway that lets the pencil pass between first half casing 1 and the second half casing 2. The first half shell 1 and the second half shell 2 are spliced to form a wire protecting sleeve with openings at two ends and a hollow interior, two ends of a wire harness are respectively connected with the two junction boxes 7, the wire harness sequentially penetrates through the corrugated pipe 8 and the wire protecting sleeve, the wire protecting sleeve plays a role in protecting the wire harness and simultaneously clamps one end of the corrugated pipe 8, and the other end of the corrugated pipe 8 is connected with the buckle 9.

Specifically, as shown in fig. 1 to 4, the first half shell 1 and the second half shell 2 are connected in a snap-fit manner, so that the first half shell 1 is conveniently disassembled and assembled, and the second half shell 2 is provided with a snap boss 3 and a snap hole 4. Buckle boss 3 is for setting up on first half casing 1's outer wall, and buckle boss 3 sets up a plurality ofly and all buckle boss 3 symmetric distribution on first half casing 1's two relative outer walls, and buckle boss 3 goes up to have 1.5 x 30 degree guide angle along the design of make-up direction to convenient assembly. The small ends of the upper and lower sides are semicircular, and the corrugated pipe 8 is fixed by the clamping groove. Set up buckle hole 4 that lets buckle boss 3 imbed on the second half casing 2, buckle hole 4 cooperatees with buckle boss 3, and the quantity of buckle hole 4 is the same with buckle boss 3's quantity. The buckling hole 4 is a rectangular hole, a 1.5 multiplied by 30-degree guide angle is designed at the buckling hole 4 along the buckling direction of two sides, the upper and lower side wire protecting sleeves are buckled and locked according to the direction shown in the figure when the sensor wire harness is assembled, and the small end part of the wire protecting sleeve with the clamping groove clamps the external wave crest and the wave trough of the closed corrugated pipe 8 so as to be fixed in the closed corrugated pipe.

In the present embodiment, as shown in fig. 1 to 4, four snap bosses 3 are provided on the first half casing 1, and four snap holes 4 are provided on the second half casing 2.

As shown in fig. 1 to 4, a first groove for embedding the corrugated tube 8 is formed in an inner circumferential surface of one end of the first half casing 1, a second groove for embedding the corrugated tube 8 is formed in an inner circumferential surface of one end of the second half casing 2, the first groove and the second groove are both semicircular grooves, and the first groove and the second groove are spliced to form a complete circular groove. The first grooves and the second grooves are arranged in a plurality of mode, the number of the first grooves is the same as that of the second grooves, all the first grooves are arranged in sequence along the length direction of the first half shell 1, all the second grooves are arranged in sequence along the length direction of the second half shell 2, and each first groove is matched with one second groove respectively, so that the corrugated pipe 8 can be fixed firmly, each expansion joint at the end part of the corrugated pipe 8 can be embedded into one first groove and one second groove, and the corrugated pipe 8 is not easy to fall off.

As shown in fig. 1 to 3, the first half casing 1 is provided with a first hanging buckle 5, and the second half casing 2 is provided with a second hanging buckle 6. First slot and first string of knot 5 set up respectively at the relative both ends on the length direction of half first casing 1, and second slot and second string of knot 6 set up respectively at the relative both ends on the length direction of half second casing 2, and first string of knot 5 and second hang knot 6 with be used for detaining the boss on terminal box 7, realize being connected of grommet and terminal box 7, and first string of knot 5 and second is hung knot 6 and can be played limiting displacement, avoids grommet and terminal box 7 separation.

The assembled effect is as shown in fig. 4, the closed corrugated pipe 8 can be well fixed through the inner groove after the two sides of the wire sheath are folded and fastened, so that the wire sheath, the corrugated pipe 8 and the junction box 7 are well connected together, various risks such as breakage and foreign object impact caused by the fact that the loose wires are exposed and scratched by foreign objects and pulled by external force are avoided, the physical protection is performed on the loose wires to the maximum extent, the capability of the wire harness for resisting various potential physical injury risks is improved, and the reliability of the wire harness part is improved; and an effective guarantee is provided for long-term and effective normal work of the wire harness. The thread protecting sleeve with the structure changes the prior art of manually cutting flannelette winding when manufacturing the thread bundle part, and has convenient operation and better manufacturability when assembling.

Preferably, the first half-shell 1 and the second half-shell 2 are integrally injection molded. As shown in fig. 5, the first half-shell 1 and the second half-shell 2 are connected together during injection molding, and have a function of error proofing. The thread protecting sleeve is an injection mold part, so that batch production can be realized, the assembly time is shorter than that of the prior art for winding the flannelette, the operation is convenient, the operation efficiency is improved, and the labor cost can be reduced; secondly, the consistency of the product is better; meanwhile, the risk of broken threads caused by cutting the flannelette can be reduced, and the qualification rate of products is improved.

As preferred, the material that first half casing 1 and second half casing 2 chose for use is PA66+ GF15, possesses certain toughness and intensity, and the buckle position can bear certain degree of elastic deformation about during the assembly, and the fine messenger's part of reinforcing glass can possess good mechanical properties and can resist certain degree striking and wearing and tearing, also can adapt to high and low temperature environment simultaneously, and the performance of ageing resistance is also better.

The invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-described manner. As long as the method conception and the technical scheme of the utility model are adopted for various insubstantial improvements; or without improvement, the above conception and technical solution of the present invention can be directly applied to other occasions, all within the protection scope of the present invention.

Claims (3)

1. Auto electric power assisted steering device sensor is grommet for pencil, its characterized in that: the corrugated pipe clamping device comprises a first half shell and a second half shell which is connected with the first half shell in a clamping manner and matched with the first half shell to clamp the corrugated pipe, wherein a channel for a wiring harness to pass through is formed between the first half shell and the second half shell;

the first half shell is provided with a first hanging buckle, and the second half shell is provided with a second hanging buckle.

2. The grommet for a sensor harness of an automotive electric power steering apparatus according to claim 1, characterized in that: the first half shell is provided with a buckle boss, and the second half shell is provided with a buckle hole.

3. The grommet for a sensor harness of an automotive electric power steering apparatus according to claim 1, characterized in that: the first half shell and the second half shell are integrally formed in an injection molding mode.

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