Special connecting wire harness for vehicle-mounted air conditioner of commercial vehicle

Abstract

The invention belongs to the technical field of automobile wire harnesses, and particularly relates to a commercial automobile vehicle-mounted air conditioner special connecting wire harness which comprises a wire body and a wire harness end, the wire body is connected with the wire harness end, the wire body penetrates through the wire harness end to be connected with a wiring hole of a wiring seat, the wiring seat is located in a wiring ring, and an exhaust groove is formed in the joint of the wiring ring and the wire harness end. A sliding groove is formed in the position, corresponding to the exhaust groove, of the wire harness end, and a negative pressure resistance increasing structure is arranged in the sliding groove in a sliding mode. After the wiring harness end is inserted into the socket of the automobile-mounted air conditioner correspondingly, air between the wiring ring and the connecting seat flows out of the exhaust groove under the pushing of the socket, and then the negative pressure resistance increasing structure is pushed to move in the sliding groove to be clamped into the exhaust groove, so that the socket of the automobile-mounted air conditioner is clamped into the wiring ring and the connecting seat to extrude internal air pressure to form negative pressure; the problem that the wire harness end is easy to loosen after being inserted into the socket of the vehicle-mounted air conditioner is avoided, and loosening of the wiring end of the wire harness caused by vibration when the vehicle-mounted air conditioner is started is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of automobile wiring harnesses, in particular to a special connection wiring harness for a commercial automobile onboard air conditioner. Background Art

[0002] A car air conditioner is a device used to adjust the temperature and humidity inside the car and provide a comfortable environment for the passengers. It includes main components such as compressor, condenser, throttling element, evaporator and fan. The circuit connection of the above components requires connecting wiring harnesses, which are mainly responsible for transmitting power and signals to control the various functions of the air conditioner.

[0003] The existing patent (publication number: CN118676692A) and a high-voltage wiring harness connection structure for new energy vehicles, this patent uses a rod with a spring, which can make the plug as a whole in the event of abnormally high temperature or spontaneous combustion tendency, through the melting or deformation of the rod to enable the spring to pull the contact piece to move, thereby realizing the power-off operation, and at the same time, this operation will cause the contact piece to shrink into the cavity, thereby further increasing the cooling effect, and at the same time, through the extension of the horizontal cylinder to help the staff to quickly locate and judge the abnormally high temperature connection point, its structure is too complicated, the cost is high, and the weight of the wiring harness end itself is heavy, and the vibration of the car often occurs during driving, which makes it difficult to ensure the stability of the structure, and at the same time, the vibration plus its own excessive weight will make it easier to loosen.

[0004] The existing patent (publication number: CN109546444B) and the automobile wiring harness plug-in, the female plug-in spring piece of this patent is fixedly connected to the female body plug-in through an elastic sheet, and the first end of the female plug-in spring piece is provided with a primary locking groove and a secondary locking groove; the stopper is fixedly connected to one end of the female plug-in spring piece, and the stopper is located between the primary locking groove and the secondary locking groove, and it has a double-layer clamping structure, thereby improving the reliability of the plug-in of the male plug-in and the female plug-in. Since the automobile wiring harness is inside the car, when the car is started and the air conditioner is turned on, the temperature in the engine compartment of the car will be higher, while in winter, the engine compartment is colder when not working. This temperature difference will accelerate the aging of the external plastic of the wiring harness end, and is affected by the manufacturing process. If there is a problem of process error, this will directly affect the fixity of the double-layer clamping structure assembly, and it is easy to loosen after the car is used for five years.

[0005] Therefore, we propose a special connection wiring harness for commercial vehicle air conditioners. Through the negative pressure resistance increase structure and the exhaust groove, we can avoid the air remaining inside the wiring harness end after it is inserted into the socket of the vehicle air conditioner, which is easy to loosen. This is beneficial to avoid the loosening of the wiring harness terminal due to vibration when the vehicle air conditioner is started, and further compress the space between the harness end and the socket of the vehicle air conditioner, which is beneficial to prevent the vibration during the driving of the vehicle from causing the loosening of the wiring harness end. Summary of the invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a special connection wiring harness for a commercial vehicle air conditioner to solve the problem.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a special connection wiring harness for commercial vehicle air conditioners, comprising a wire body and a wire harness end, the wire body being connected to the wire harness end, the wire body passing through a wiring hole of a connection socket of the wire harness end, the wiring socket being located in a wiring ring, an exhaust groove being provided at the junction of the wiring ring and the wire harness end, a sliding groove being provided at the wire harness end corresponding to the exhaust groove, a negative pressure resistance increasing structure sliding inside the sliding groove, the wire harness end being connected to a socket of the vehicle air conditioner, and the negative pressure resistance increasing structure being slid into the exhaust groove.

[0008] Further: the top of the negative pressure resistance increasing structure is provided with friction patterns, and the side walls of the negative pressure resistance increasing structure corresponding to the exhaust groove are provided with an upper plate and a lower plate from top to bottom, the gap between the upper plate and the lower plate corresponds to the exhaust groove, and the upper side wall of the negative pressure resistance increasing structure facing the socket of the vehicle air conditioner is provided with a resistance increasing strip.

[0009] Further: the exhaust groove is provided with a stepped limiting groove, and the lower plate is inserted into the limiting groove.

[0010] Further: a conductive sleeve is nested inside the wiring hole, and the internal circuit of the wire body is connected to the conductive sleeve.

[0011] Further: the line body is embedded with a bellows.

[0012] Furthermore: the front end of the wiring ring is symmetrically provided with a limiting groove, and the limiting groove corresponds to the socket of the vehicle air conditioner to form a limit.

[0013] Compared with the prior art, the technical effects and advantages of the present invention are as follows:

[0014] 1. The special connection harness for commercial vehicle air conditioners of the present invention has a negative pressure resistance increasing structure and an exhaust groove. After the harness end is inserted into the socket corresponding to the vehicle air conditioner, the air between the wiring ring and the socket flows out from the exhaust groove under the push of the socket, and then the negative pressure resistance increasing structure is pushed to move in the sliding groove and snap into the exhaust groove, so that the socket of the vehicle air conditioner is snapped into the wiring ring and the socket to squeeze the internal air pressure to form a negative pressure, avoiding the wiring harness end corresponding to the socket of the vehicle air conditioner After being inserted into the socket, the air inside is easily loosened, which is beneficial to avoid the wiring harness terminal from loosening due to vibration when the vehicle air conditioner is started.

[0015] 2. The special connection harness for commercial vehicle air conditioners of the present invention, through the arrangement of friction patterns, resistance increasing strips and limit grooves, pushes the negative pressure resistance increasing structure into the exhaust groove, so that the lower plate corresponds to the limit groove, and the resistance increasing strip fits the socket of the vehicle air conditioner. The protruding resistance increasing strip can increase the friction force for pulling out the socket of the vehicle air conditioner, and further compresses the space between the harness end and the socket of the vehicle air conditioner, which is beneficial to prevent the vibration during the driving of the vehicle from causing the harness end to loosen and have poor contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the wiring harness end structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the sliding groove structure of the wiring harness end of the present invention;

[0018] Figure 3 It is a schematic diagram of the negative pressure resistance increasing structure of the present invention;

[0019] Figure 4 It is a schematic diagram of the wiring harness end and the wiring body structure of the present invention;

[0020] Figure 5 It is a schematic cross-sectional view of the wiring harness end structure of the present invention.

[0021] The figures are marked as follows: 1. wiring harness end; 11. sliding groove; 2. wiring ring; 21. exhaust groove; 22. limiting groove; 3. negative pressure resistance increasing structure; 31. friction pattern; 32. upper plate; 33. lower plate; 34. resistance increasing strip; 4. socket; 41. wiring hole; 42. conductive sleeve; 5. wire body; 51. corrugated tube. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative, and the structures involved in the present invention are not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0023] Example:

[0024] See also Figure 1-5The present invention provides a technical solution: a special connection harness for commercial vehicle air conditioner, comprising a wire body 5 and a wire harness end 1, wherein the wire body 5 is connected to the wire harness end 1, and the wire harness end 1 is mainly made of plastic rubber material, and the rubber material is LCP plastic material, which is suitable for a variety of spacing series of female row automotive connector products, and has a welding temperature resistance between 260 degrees and 320 degrees, and has good heat resistance and chemical stability. The seal is usually made of rubber, which is worn on the wire or inserted in the connector to play a waterproof sealing role, especially in the wet area wire harness of the car. The wire body 5 is commonly made of wire materials, such as copper and aluminum, among which copper is the most common wire material because it has good Conductivity and mechanical strength, the cross-sectional area of ​​the wire is selected according to actual needs, and different cross-sectional areas can carry currents of different sizes. The wire body 5 passes through the wiring hole 41 connected to the wiring harness end 1 and the socket 4. The socket of the car air conditioner has a conductive column adapted to the wiring hole 41, and the conductive column enters the wiring hole 41. A conductive sleeve 42 is nested inside the wiring hole 41. The internal circuit of the wire body 5 is connected to the conductive sleeve 42. The wiring seat is located in the wiring ring 2. An exhaust groove 21 is provided at the connection between the wiring ring 2 and the wiring harness end 1. After the wiring harness end 1 is inserted into the socket corresponding to the car air conditioner, the air between the wiring ring 2 and the socket 4 flows out from the exhaust groove 21 under the push of the socket.

[0025] A sliding groove 11 is provided at the wiring harness end 1 corresponding to the exhaust groove 21, and a negative pressure resistance increasing structure 3 is slid inside the sliding groove 11. The wiring harness end 1 is connected to the socket of the vehicle air conditioner, and the negative pressure resistance increasing structure 3 is slid to be inserted into the exhaust groove 21. A friction pattern 31 is provided on the top of the negative pressure resistance increasing structure 3. The negative pressure resistance increasing structure 3 is provided with an upper plate 32 and a lower plate 33 from top to bottom on the side wall corresponding to the exhaust groove 21. The gap between the upper plate 32 and the lower plate 33 is inserted into the exhaust groove 21 correspondingly. After the wiring harness end 1 is inserted into the socket corresponding to the vehicle air conditioner, the air between the wiring ring 2 and the socket 4 flows out of the exhaust groove 21 under the push of the socket, and then the negative pressure resistance increasing structure 3 is pushed to move in the sliding groove 11 and be inserted into the exhaust groove 21, so that the socket of the vehicle air conditioner is inserted into the wiring ring 2 and the socket 4 to squeeze the internal air pressure to form a negative pressure, so as to avoid the wiring harness end 1 from being easily loosened after the socket corresponding to the vehicle air conditioner is inserted.

[0026] A resistance increasing strip 34 is provided on the upper side wall of the negative pressure resistance increasing structure 3 facing the socket of the vehicle air conditioner, and the exhaust groove 21 is provided with a stepped limiting groove 22, and the lower plate 33 is inserted into the limiting groove 22. By pushing the negative pressure resistance increasing structure 3 into the exhaust groove 21, the lower plate 33 is made to correspond to the limiting groove 22, so that the resistance increasing strip 34 fits the socket of the vehicle air conditioner. The protruding resistance increasing strip 34 can increase the friction force of pulling out the socket of the vehicle air conditioner, and further compress the space between the harness end and the socket of the vehicle air conditioner, so as to prevent the vibration during the driving of the vehicle from causing the wiring harness end 1 to loosen and have poor contact.

[0027] Among them, the wire body 5 is nested with a bellows 51, which protects the wire body 5 to prevent the wire body 5 from getting damp and external friction from causing damage to the insulation layer outside the wire body 5. The bellows is an elastic tubular element, which is formed by foldable corrugated sheets connected along the folding and telescopic direction. Different types of bellows 51 can be selected for protection according to the routing of the car's air conditioner. If the wiring harness may inevitably pass through the dripping area of ​​the car's air conditioner, or the routing area is prone to vibration, a metal bellows can be used, which is mainly used to compensate for pipeline thermal deformation, shock absorption, and absorption of pipeline settlement deformation.

[0028] Among them, the front end of the wiring ring 2 is symmetrically provided with a limit groove 22, and the limit groove 22 corresponds to the socket of the vehicle air conditioner to form a limit. Two limit blocks matching the limit groove 22 are added to the socket of the vehicle air conditioner to prevent the lower wiring harness end 1 from rotating.

[0029] The working principle of the embodiment of the present invention is as follows: after the wiring harness end 1 is inserted into the corresponding socket of the vehicle air conditioner, the air between the wiring ring 2 and the socket 4 flows out from the exhaust groove 21 under the push of the socket, and then the negative pressure resistance increasing structure 3 is pushed to move in the sliding groove 11 and snap into the exhaust groove 21, so that the socket of the vehicle air conditioner is snapped into the wiring ring 2 and the socket 4 to squeeze the internal air pressure to form a negative pressure, and after the negative pressure resistance increasing structure 3 is pushed into the exhaust groove 21, the lower plate 33 is made to correspond to the limiting groove 22, so that the resistance increasing strip 34 fits the socket of the vehicle air conditioner, and the protruding resistance increasing strip 34 can increase the friction force of pulling out the socket of the vehicle air conditioner, and further compress the space between the harness end and the socket of the vehicle air conditioner;

[0030] When the wiring terminal needs to be unplugged, the negative pressure resistance increasing structure 3 can be slid outward in the sliding groove 11 so that the negative pressure resistance increasing structure 3 is separated from the exhaust groove 21, and the resistance increasing strip 34 is separated from the socket of the vehicle air conditioner, so that the outside air enters between the wiring harness end 1 and the socket of the vehicle air conditioner through the exhaust groove 21, and as the wiring harness end 1 is pulled outward, the negative pressure gradually disappears, and the wiring terminal can be unplugged normally.

[0031] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special connection harness for a commercial vehicle air conditioner, comprising a wire body (5) and a wire harness end (1), wherein the wire body (5) is connected to the wire harness end (1), and the wire body (5) passes through a wiring hole (41) of a connection socket (4) of the wire harness end (1), characterized in that: The wiring seat is located in the wiring ring (2); an exhaust groove (21) is provided at the connection point between the wiring ring (2) and the wiring harness end (1); a sliding groove (11) is provided at the wiring harness end (1) corresponding to the exhaust groove (21); a negative pressure resistance increasing structure (3) slides inside the sliding groove (11); the wiring harness end (1) is connected to the socket of the vehicle air conditioner, and the negative pressure resistance increasing structure (3) slides and snaps into the exhaust groove (21).

2. A commercial vehicle air conditioner dedicated connection harness according to claim 1, characterized in that: The negative pressure resistance increasing structure (3) is provided with a friction pattern (31) on the top, and the negative pressure resistance increasing structure (3) is provided with an upper plate (32) and a lower plate (33) from top to bottom on the side wall corresponding to the exhaust groove (21), the gap between the upper plate (32) and the lower plate (33) is inserted into the exhaust groove (21), and a resistance increasing strip (34) is provided on the upper side wall of the negative pressure resistance increasing structure (3) facing the socket of the vehicle air conditioner.

3. A special connection harness for commercial vehicle air conditioner according to claim 2, characterized in that: The exhaust groove (21) is provided with a stepped limiting groove (22), and the lower plate (33) is inserted into the limiting groove (22).

4. A commercial vehicle air conditioner dedicated connection harness according to claim 1, characterized in that: A conductive sleeve (42) is nested inside the wiring hole (41), and the internal circuit of the wire body (5) is connected to the conductive sleeve (42).

5. A special connection harness for commercial vehicle air conditioner according to claim 1, characterized in that: The wire body (5) is nested with a corrugated tube (51).

6. A commercial vehicle air conditioner dedicated connection harness according to claim 1, characterized in that: The front end of the wiring ring (2) is symmetrically provided with a limiting groove (22), and the limiting groove (22) corresponds to the socket of the vehicle air conditioner to form a limit.

Images