阅读说明：本技术 新能源汽车驻车拉线张紧装置 (New energy automobile parking straining wire overspeed device tensioner ) 是由 喻利华 于 2021-11-08 设计创作，主要内容包括：本发明涉及汽车配件领域,尤其涉及新能源汽车驻车拉线张紧装置。所述新能源汽车驻车拉线张紧装置包括安装舱架,内设的安装腔室内安装有转动连接的螺纹杆,且所述螺纹杆上套设有螺纹连接的螺纹连接块,所述安装舱架的外舱壁上安装有驱动组件；调节线轮,通过支架安装在所述螺纹连接块上,并利用所述螺纹连接块带动调节线轮升高时对驻车拉线进行张紧处理,预警部件,位于所述安装舱架上。本发明提供的新能源汽车驻车拉线张紧装置方便行车人员可以及时了解驻车拉线的状况,以便利用调节线轮对其进行及时调节张紧状况,而通过预警部件可以对驻车拉线的增长状态进行实时监测,避免驻车拉线因为过度增长而导致后续绷断而造成行车事故。(The invention relates to the field of automobile accessories, in particular to a parking stay wire tensioning device for a new energy automobile. The new energy automobile parking stay wire tensioning device comprises an installation cabin frame, a threaded rod which is rotatably connected is installed in an installation cavity which is arranged in the installation cabin frame, a threaded connecting block which is in threaded connection is sleeved on the threaded rod, and a driving assembly is installed on the outer cabin wall of the installation cabin frame; the adjusting wire wheel is installed on the threaded connection block through a support, the parking pull wire is tensioned when the adjusting wire wheel is driven by the threaded connection block to rise, and the early warning component is located on the installation cabin frame. The new energy automobile parking stay wire tensioning device provided by the invention is convenient for a driver to know the condition of the parking stay wire in time so as to adjust the tensioning condition of the parking stay wire in time by using the adjusting wire wheel, and the growth state of the parking stay wire can be monitored in real time by the early warning part, so that the driving accident caused by subsequent tension breakage due to excessive growth of the parking stay wire is avoided.)

1. New energy automobile parking overspeed device tensioner that acts as go-between includes:

the device comprises an installation cabin frame (1), wherein a rotatably connected threaded rod (2) is installed in an installation cavity which is arranged in the installation cabin frame, a threaded connecting block (4) in threaded connection is sleeved on the threaded rod (2), and a driving assembly (3) for driving the threaded rod (2) to rotate is installed on the outer cabin wall of the installation cabin frame (1);

its characterized in that, car parking overspeed device tensioner that acts as go-between still includes:

the adjusting wire wheel (5) is arranged on the threaded connecting block (4) through a support, and the parking pull wire (10) is tensioned when the adjusting wire wheel (5) is driven to rise by the threaded connecting block (4);

the early warning component (6) is positioned on the installation cabin frame (1), the early warning component (6) comprises a porcelain cylinder (61) and a metal rod (63), the porcelain cylinder (61) is arranged on the outer bulkhead of the installation cabin frame (1) through a cylinder frame fixing frame and is vertically arranged, and the ceramic cylinder (61) is wound with resistance wires (62) which are uniformly distributed, the metal bar (63) fixing frame is arranged on the cylinder frame, and the metal bar (63) is sleeved with a connecting ring sheet (65) in sliding connection, both sides of the connecting ring sheet (65) are fixedly provided with metal sliding sheets (64), two metal sliding sheets (64) are respectively abutted against the resistance wire (62) at the corresponding position, a non-metal fixed embedding block (66) is arranged on a fixed frame between the two metal sliding sheets (64), the nonmetal fixing embedded block (66) penetrates through a sliding through cavity formed in the side wall of the installation cabin frame (1) and is fixedly connected with the side wall of the threaded connecting block (4);

and the monitoring part (9) is installed on the installation cabin frame (1) through the waist-shaped linkage frame (7), and the monitoring part (9) is utilized to monitor the tensioning condition of the parking stay wire (10) in real time.

2. The new energy automobile parking bracing wire tensioning device according to claim 1, characterized in that two terminals a and b are respectively installed at two ends of a resistance wire (62) in the early warning part (6), two terminals c and d are respectively installed at two ends of a metal bar (63) in the early warning part (6), the terminal a and the terminal c are located on the same side, and the terminal b and the terminal d are located on the same side.

3. The new energy automobile parking bracing wire tensioning device according to claim 2, characterized in that the waist-shaped linkage frame (7) is fixedly installed at the bottom of the installation cabin frame (1), guide wire wheels (8) which are rotatably connected are installed on two sides of the waist-shaped linkage frame (7) through wheel carriers, and the two guide wire wheels (8) and the adjusting wire wheel (5) form a triangular shape and are located on the same plane.

4. The new energy automobile parking bracing wire tensioning device according to claim 3, wherein the monitoring parts (9) are provided in two sets and respectively arranged on two wheel carriers, the monitoring parts (9) comprise balance wheels (91), the balance wheels (91) are rotatably mounted on the wheel carriers through rotating wheel rods (92), and the balance wheels (91) are coplanar with the guide wire wheels (8) on the corresponding wheel carriers.

5. The new energy automobile parking bracing wire tensioning device according to claim 4, characterized in that the monitoring part (9) further comprises a U-shaped frame (93), the U-shaped frame (93) is fixedly installed on the waist-shaped linkage frame (7) and is located on the inner side of the guide wire wheel (8), a plurality of infrared transmitters (94) with the same specification are fixedly installed on the inner frame wall on one side of the U-shaped frame (93), and a plurality of infrared receivers (95) with the same specification are fixedly installed on the inner frame wall on the other side of the U-shaped frame (93).

6. The new energy automobile parking bracing wire tensioning device according to claim 5, characterized in that the infrared transmitters (94) and the infrared receivers (95) on the U-shaped frame (93) are in one-to-one correspondence, and a plurality of the infrared transmitters (94) and the infrared receivers (95) are distributed at equal intervals from top to bottom.

7. The new energy automobile parking bracing wire tensioning device according to claim 6, characterized in that the driving assembly (3) comprises a driving motor (31), the driving motor (31) is fixedly installed on an outer bulkhead of the installation cabin frame (1) through a rack, a driving gear (32) is fixedly installed at an output end of the driving motor (31), the driving gear (32) is in meshed connection with a driven gear (33), and the driven gear (33) is fixedly sleeved on the top of the threaded rod (2).

8. The new energy automobile parking bracing wire tensioning device according to claim 7, characterized in that the side wall of the threaded connection block (4) is in sliding contact with the inner cabin wall of the mounting cabin frame (1).

9. The new energy automobile parking bracing wire tensioning device according to claim 8, characterized in that the parking bracing wire (10) sequentially bypasses the guide wire wheel (8) on one side, the balance wheel (91), the adjusting wire wheel (5) and the balance wheel (91) and the guide wire wheel (8) on the waist-shaped linkage frame (7) on the other side.

Technical Field

The invention relates to the field of automobile accessories, in particular to a parking stay wire tensioning device for a new energy automobile.

Background

The new energy automobile adopts unconventional automobile fuel as a power source (or adopts conventional automobile fuel and a novel vehicle-mounted power device), integrates advanced technologies in the aspects of power control and driving of the automobile, and forms an automobile with advanced technical principle, new technology and new structure.

The parking brake of the new energy automobile is usually an electronic type and a mechanical type, the electronic type is affected by programs and electric signals to cause the performance of the parking brake to be unstable, and the anti-interference capability is poor, the mechanical type adopts mechanical motion control, the performance of the parking brake is stable, and the anti-interference capability is strong, but after the mechanical type is used for a certain period, the brake and the stay wire generate deformation accumulation to a certain degree, the braking stroke of the brake is lengthened, the braking force is greatly reduced, sometimes even the parking function can not be fully exerted, and some parking stay wire tensioning devices can not effectively monitor the parking stay wire at present, so that the parking stay wire is excessively tensioned to cause easy snapping in driving to cause driving accidents.

Therefore, a new tensioning device for a parking cable of a new energy automobile is needed to solve the technical problems.

Disclosure of Invention

In order to solve the technical problem, the invention provides a new energy automobile parking stay wire tensioning device.

The invention provides a new energy automobile parking stay wire tensioning device, which comprises:

the installation cabin frame is internally provided with an installation cavity in which a threaded rod in rotary connection is installed, the threaded rod is sleeved with a threaded connection block in threaded connection, and a driving assembly for driving the threaded rod to rotate is installed on the outer cabin wall of the installation cabin frame;

the car parking guy wire overspeed device tensioner still includes:

the adjusting wire wheel is arranged on the threaded connecting block through a support, and the parking pull wire is tensioned when the adjusting wire wheel is driven to rise by the threaded connecting block;

the early warning component is positioned on the installation cabin frame and comprises a porcelain cylinder and a metal rod, the porcelain cylinder is arranged on an outer cabin wall of the installation cabin frame through a cylinder frame fixing frame and is vertically arranged, resistance wires which are uniformly distributed are wound on the porcelain cylinder, the metal rod fixing frame is arranged on the cylinder frame, the metal rod is sleeved with a connecting ring piece which is in sliding connection, metal sliding pieces are fixedly arranged on two sides of the connecting ring piece, the two metal sliding pieces are respectively abutted against the resistance wires at corresponding positions, a nonmetal fixing and embedding block is arranged on the fixing frame between the two metal sliding pieces, and the nonmetal fixing and embedding block penetrates through a sliding through cavity formed in the side wall of the installation cabin frame and is fixedly connected with the side wall of the threaded connecting block;

the monitoring component is arranged on the installation cabin frame through a waist-shaped linkage frame and is used for monitoring the tensioning condition of the parking stay wire in real time;

when the parking is acted as go-between initially and is carried out the tensioning adjustment, act as go-between the parking and walk around one side leading wheel in proper order, the stabilizer, adjust the stabilizer on line wheel and the opposite side waist type linkage frame, behind the leading wheel, the rotatory wheel pole that rotates makes the parking act as go-between also be in taut state when the stabilizer is in the horizontality, the infrared emitter and the infrared receiver that rotate the wheel pole and will separate both sides correspondence this moment, and be provided with the display lamp of infrared emitter and infrared receiver signal intercommunication situation and be used for monitoring the numerical value of early warning part current change on new forms of energy vehicle-mounted display.

Preferably, the two ends of a resistance wire in the early warning part are respectively provided with two terminals a and b, the two ends of a metal rod in the early warning part are respectively provided with two terminals c and d, the terminal a and the terminal c are positioned at the same side, the terminal b and the terminal d are positioned at the same side, when the threaded connecting block drives the adjusting wire wheel to tighten the parking pull wire, the threaded connecting block can also drive the metal slip sheet to slide upwards along the resistance wire, so that the resistance of the terminal a and the terminal c or the resistance of the terminal b and the terminal d change, and the tensioning degree of the parking pull wire can be judged by observing the change of current on the new energy vehicle-mounted display.

Preferably, waist type linkage frame fixed mounting is in the bottom of installation cabin frame, just the both sides of waist type linkage frame are all installed the guide wire wheel of rotation connection through the wheel carrier, two the guide wire wheel constitutes the triangle-shaped with the regulation line wheel and is located same plane.

Preferably, the monitoring components are provided with two groups and are respectively arranged on the two wheel carriers, each monitoring component comprises a balance wheel, the balance wheels are rotatably arranged on the wheel carriers through rotating wheel rods, and the balance wheels are coplanar with the guide wire wheels on the corresponding wheel carriers.

Preferably, the monitoring part further comprises a U-shaped frame, the U-shaped frame is fixedly installed on the waist-shaped linkage frame and located on the inner side of the guide wire wheel, a plurality of infrared transmitters with the same specification are fixedly installed on the inner frame wall on one side of the U-shaped frame, a plurality of infrared receivers with the same specification are fixedly installed on the inner frame wall on the other side of the U-shaped frame, when the parking pull wire is braked for multiple times, the parking pull wire is grown due to deformation accumulation, and then the balance wheels in the monitoring parts on two sides deflect downwards for a certain distance along with the rotating wheel rod due to the growth of the parking pull wire, so that the infrared transmitter A and the infrared receiver B are in signal communication without the blocking effect of the rotating wheel rod, and the rest infrared receivers cannot receive signals of the infrared transmitters under the blocking effect of the rotating wheel rod, and therefore the new energy vehicle-mounted display can immediately display the signal communication change of the infrared transmitters and the infrared receivers, the parking pull wire is elongated, so that a driver can know the condition of the parking pull wire in time conveniently, and the tensioning condition of the parking pull wire can be adjusted in time by using the adjusting wire wheel on the threaded connecting block.

Preferably, the infrared transmitters and the infrared receivers on the U-shaped frame correspond to each other one by one, and the infrared transmitters and the infrared receivers are distributed at equal intervals from top to bottom.

Preferably, drive assembly includes driving motor, driving motor passes through frame fixed mounting on the outer bulkhead of installation bay frame, just driving motor's output fixed mounting has the driving gear, the driving gear is connected with driven gear meshing, just driven gear is fixed cup joints at the top of threaded rod, detects the parking at the monitoring part and acts as go-between the growth back, opens driving motor and drives the driving gear rotatory, because the driving gear is connected with the driven gear meshing on the threaded rod for the threaded rod rotates, and the threaded connection piece on the threaded rod is slided along the threaded rod along with the rotation of threaded rod this moment.

Preferably, the side wall of the threaded connecting block is in sliding contact with the inner cabin wall of the installation cabin frame, so that the problem that the threaded connecting block swings along with the rotation of the threaded rod is avoided.

Preferably, the parking pull wire sequentially bypasses the guide wire wheel, the balance wheel and the adjusting wire wheel on one side and the balance wheel and the guide wire wheel on the waist-shaped linkage frame on the other side.

Compared with the prior art, the new energy automobile parking stay wire tensioning device provided by the invention has the following beneficial effects:

1. the invention facilitates the driving personnel to know the parking pull wire condition in time through the monitoring part, so as to adjust the tensioning condition in time by using the adjusting wire wheel on the threaded connecting block;

2. the invention can monitor the growth state of the parking stay wire in real time through the early warning component, and avoids the driving accident caused by subsequent snapping of the parking stay wire due to excessive growth.

Drawings

Fig. 1 is a schematic structural view of a preferred embodiment of a new energy vehicle parking cable tensioning device provided by the invention;

FIG. 2 is a schematic view of the installation structure of the threaded rod in the installation bay shown in FIG. 1;

FIG. 3 is a schematic view of a connection structure of the threaded connection block, the adjusting wheel and the early warning component shown in FIG. 2;

FIG. 4 is a schematic structural diagram of the early warning component shown in FIG. 3;

FIG. 5 is a schematic view of a connection structure of the installation cabin frame and the waist-shaped linkage frame shown in FIG. 1;

FIG. 6 is a schematic view of the mounting structure of the monitoring member on the waist-type linkage shown in FIG. 1;

FIG. 7 is a schematic structural view of the monitoring unit of FIG. 6;

FIG. 8 is a schematic view of the infrared emitter and infrared emitter mounting structure of the monitoring unit of FIG. 7;

fig. 9 is a schematic structural diagram of the driving assembly shown in fig. 2.

Reference numbers in the figures: 1. installing a cabin frame; 2. a threaded rod; 3. a drive assembly; 31. a drive motor; 32. a driving gear; 33. a driven gear; 4. a threaded connection block; 5. adjusting the wire wheel; 6. an early warning component; 61. a porcelain cylinder; 62. a resistance wire; 63. a metal rod; 64. a slip ring segment; 65. a metal slip sheet; 66. a non-metal fixed embedded block; 7. a waist-shaped linkage frame; 8. a guide wire wheel; 9. a monitoring component; 91. a balance wheel; 92. rotating the wheel lever; 93. a U-shaped frame; 94. an infrared emitter; 95. an infrared receiver; 10. and (5) parking pull wires.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Specific implementations of the present invention are described in detail below with reference to specific embodiments.

Referring to fig. 1 to 9, in an embodiment of the present invention, a new energy vehicle parking cable tensioning device includes: the device comprises an installation cabin frame 1, a regulating wire wheel 5, an early warning component 6 and a monitoring component 9.

In the embodiment of the invention, referring to fig. 1, fig. 5, fig. 6, fig. 7 and fig. 8, the waist-shaped linkage frame 7 is fixedly installed at the bottom of the installation cabin frame 1, and both sides of the waist-shaped linkage frame 7 are respectively provided with the guide wire wheels 8 which are rotatably connected through the wheel carrier, and the two guide wire wheels 8 and the regulating wire wheel 5 form a triangular shape and are located on the same plane;

the monitoring component 9 is installed on the installation cabin frame 1 through a waist-shaped linkage frame 7, the monitoring component 9 is utilized to monitor the tensioning condition of the parking pull wire 10 in real time, two groups of monitoring components 9 are arranged and respectively arranged on two wheel frames, the monitoring component 9 comprises a balance wheel 91, the balance wheel 91 is rotatably installed on the wheel frames through a rotating wheel rod 92, and the balance wheel 91 is coplanar with the guide wire wheel 8 on the corresponding wheel frame;

monitoring part 9 still includes U type frame 93, U type frame 93 fixed mounting is on waist type linkage frame 7 and is in the inboard of leading wire wheel 8, fixed mounting has the same infra-red transmitter 94 of a plurality of specification in U type frame 93 one side on the frame wall, just fixed mounting has the same infra-red receiver 95 of a plurality of specification in U type frame 93 opposite side on the frame wall, wherein, infra-red transmitter 94 and infra-red receiver 95 one-to-one on the U type frame 93, and a plurality of infra-red transmitter 94 and infra-red receiver 95 equidistance distribute from top to bottom all.

It should be noted that: when the parking pull wire 10 is initially tensioned and adjusted, the parking pull wire 10 sequentially bypasses the guide wire wheel 8 and the balance wheel 91 on one side, the adjusting wire wheel 5, the balance wheel 91 on the waist-shaped linkage frame 7 on the other side and the guide wire wheel 8, the wheel lever 92 is rotated to enable the parking pull wire 10 to be in a tensioned state when the balance wheel 91 is in a horizontal state, the wheel lever 92 is rotated to block the infrared transmitters 94 and the infrared receivers 95 corresponding to the two sides, and a display lamp for monitoring the signal communication state of the infrared transmitters and the infrared receivers and a numerical value for monitoring the current change of the early warning component 6 are arranged on the new energy vehicle-mounted display;

in the present embodiment: numbers (for example, A1, A2, A3 … … An; B1, B2, B3 … … Bn; the infrared transmitter is A, and the infrared receiver is B) are sequentially arranged on the infrared transmitter 94 and the infrared receiver 95 from bottom to top, the rotating wheel rod 92 blocks the signal connection of the infrared transmitter A1 and the infrared receiver B1 under the initial tensioning state of the parking cable 10, and the rest infrared receivers B2 and B3 … … Bn respectively receive the signals of the infrared transmitters A2 and A3 … … An;

when the parking cable 10 is increased due to the accumulation of deformation after the vehicle is braked for a plurality of times, the balance wheel 91 in the two-side monitoring part 9 is deflected downwards for a certain distance along with the rotating wheel rod 92 due to the increase of the parking cable 10, therefore, the infrared emitter A1 and the infrared receiver B1 are in signal communication under the effect of no blocking of the rotating wheel rod 92, while the rest of the infrared receivers B2 and B3 … … Bn cannot receive the signals of the infrared transmitters A2 and A3 … … An under the obstruction of the rotating wheel rod 92, therefore, the new energy vehicle-mounted display can immediately display the signal communication change of the infrared emitter and the infrared receiver, which indicates that the parking pull wire 10 is elongated, therefore, the condition of the parking pull wire 10 can be known in time conveniently by a driver, so that the tension condition can be adjusted in time by using the adjusting wire wheel 5 on the threaded connecting block 4.

In the embodiment of the present invention, referring to fig. 1, fig. 2 and fig. 9, a rotatably connected threaded rod 2 is installed in an installation chamber arranged in an installation cabin 1, a threaded connection block 4 in threaded connection is sleeved on the threaded rod 2, a driving assembly 3 for driving the threaded rod 2 to rotate is installed on an outer cabin wall of the installation cabin 1, the driving assembly 3 includes a driving motor 31, the driving motor 31 is fixedly installed on the outer cabin wall of the installation cabin 1 through a frame, an output end of the driving motor 31 is fixedly installed with a driving gear 32, the driving gear 32 is engaged with a driven gear 33, the driven gear 33 is fixedly sleeved on a top of the threaded rod 2, wherein a side wall of the threaded connection block 4 is in sliding contact with the inner cabin wall of the installation cabin 1, and an adjusting pulley 5 is installed on the threaded connection block 4 through a bracket, and the parking stay wire 10 is tensioned when the threaded connection block 4 drives the adjusting wire wheel 5 to rise.

It should be noted that: after the monitoring part 9 detects the increase of the parking pull wire 10, the driving motor 31 is started to drive the driving gear 32 to rotate, the driving gear 32 is meshed with the driven gear 33 on the threaded rod 2, so that the threaded rod 2 rotates, at the same time, the threaded connecting block 4 on the threaded rod 2 slides up along the threaded rod 2 along with the rotation of the threaded rod 2, the regulating wire wheel 5 is raised and the loosened parking wire 10 is tightened until the parking wire 10 is deflected upward by driving the rotating wheel lever 92 of the balance wheel 91, so that the infrared transmitter a1 and the infrared receiver B1 are blocked by the rotating wheel rod 92 to prevent the signals from being communicated, the outer receivers 94 of the remaining ir receivers B2 and B3 … … Bn can receive signals from several ir emitters 95 of the ir emitters a2 and A3 … … An, indicating that the parking cable 10 has been tensioned.

In an embodiment of the invention, referring to fig. 3 and 4, the warning device 6 is located on the installation bay 1, and the early warning component 6 comprises a porcelain cylinder 61 and a metal rod 63, the porcelain cylinder 61 is arranged on the outer bulkhead of the installation cabin frame 1 through a cylinder frame fixing frame and is vertically arranged, and the resistance wires 62 which are uniformly distributed are wound on the porcelain cylinder 61, the metal bar 63 is fixedly arranged on the cylinder frame, and the metal bar 63 is sleeved with a connecting ring sheet 65 which is connected in a sliding way, both sides of the connecting ring sheet 65 are fixedly provided with metal sliding sheets 64, two metal sliding sheets 64 are respectively abutted against the resistance wires 62 at corresponding positions, a non-metal fixed embedding block 66 is arranged on a fixed frame between the two metal sliding sheets 64, the nonmetal fixing and embedding block 66 penetrates through a sliding through cavity formed in the side wall of the installation cabin frame 1 and is fixedly connected with the side wall of the threaded connecting block 4;

two terminals a and b are respectively installed at two ends of a resistance wire 62 in the early warning component 6, two terminals c and d are respectively installed at two ends of a metal rod 63 in the early warning component 6, the terminal a and the terminal c are located on the same side, and the terminal b and the terminal d are located on the same side.

It should be noted that: before installation, a wiring terminal a and a wiring terminal c (or a wiring terminal b and a wiring terminal d) are connected in series and enter a direct current circuit, a current parameter value M of the wiring terminal a is on a new energy vehicle-mounted display, and an early warning current value N is set in a control terminal of the new energy vehicle-mounted display;

when the threaded connecting block 4 drives the adjusting wire wheel 5 to tighten the parking pull wire 10, the threaded connecting block 4 also drives the metal sliding sheet 64 to slide up along the resistance wire 62, so that the resistance of the a wiring terminal and the c wiring terminal (or the b wiring terminal and the d wiring terminal) changes, the tensioning degree of the parking pull wire 10 can be judged by observing the change of current on a new energy vehicle-mounted display,

when M is less than N, the new energy vehicle-mounted display displays a safety signal, which indicates that the parking pull wire 10 is increased but still is within the receiving range of the parking pull wire 10;

when M is larger than or equal to N, the new energy vehicle-mounted display displays an early warning signal, which indicates that the parking stay wire 10 is in an over-tension state, and needs to be replaced in time to avoid the failure of the parking hand brake caused by the over-tension of the parking stay wire 10.

It is worth noting that: the display of the new energy automobile on the signal of the monitoring part 9 and the display of the current in the early warning part 6 are realized by the technical personnel, and the related circuits and control are not described in detail herein.

The working principle of the new energy automobile parking stay wire tensioning device provided by the invention is as follows:

when the parking stay wire 10 is initially tensioned and adjusted, the parking stay wire 10 sequentially bypasses the guide wire wheel 8 and the balance wheel 91 on one side, the adjusting wire wheel 5, and the balance wheel 91 and the guide wire wheel 8 on the waist-shaped linkage frame 7 on the other side, the wheel rod 92 is rotated to enable the parking stay wire 10 to be in a tensioned state when the balance wheel 91 is in a horizontal state, the wheel rod 92 is rotated to block the infrared transmitter 94 and the infrared receiver 95 corresponding to the two sides, a display lamp for signal communication between the infrared transmitter and the infrared receiver is arranged on a new energy vehicle-mounted display, a wiring terminal a and a wiring terminal c (or a wiring terminal b and a wiring terminal d) are connected in series to enter a direct current circuit, a current parameter value M of the new energy vehicle-mounted display is displayed, and an early warning current value N is arranged in a control terminal of the new energy vehicle-mounted display;

numbers (for example, A1, A2, A3 … … An; B1, B2, B3 … … Bn; A is the infrared emitter and B is the infrared receiver) are sequentially arranged on the infrared emitter 94 and the infrared receiver 95 from bottom to top, the rotating wheel rod 92 blocks the signal connection of the infrared emitter A1 and the infrared receiver B1 under the initial tensioning state of the parking cable 10, and the rest infrared receivers B2 and B3 … … Bn respectively receive the signals of the infrared emitters A2 and A3 … … An;

when the parking cable 10 is increased due to the accumulation of deformation after the vehicle is braked for a plurality of times, the balance wheel 91 in the two-side monitoring part 9 is deflected downwards for a certain distance along with the rotating wheel rod 92 due to the increase of the parking cable 10, therefore, the infrared emitter A1 and the infrared receiver B1 are in signal communication under the effect of no blocking of the rotating wheel rod 92, while the rest of the infrared receivers B2 and B3 … … Bn cannot receive the signals of the infrared transmitters A2 and A3 … … An under the obstruction of the rotating wheel rod 92, therefore, the new energy vehicle-mounted display can immediately display the signal communication change of the infrared emitter and the infrared receiver, which indicates that the parking pull wire 10 is elongated, therefore, the condition of the parking stay wire 10 can be known in time conveniently by a driver, so that the tension condition of the parking stay wire can be adjusted in time by using the adjusting wire wheel 5 on the threaded connecting block 4;

after the monitoring part 9 detects the increase of the parking pull wire 10, the driving motor 31 is started to drive the driving gear 32 to rotate, the driving gear 32 is meshed with the driven gear 33 on the threaded rod 2, so that the threaded rod 2 rotates, at the same time, the threaded connecting block 4 on the threaded rod 2 slides up along the threaded rod 2 along with the rotation of the threaded rod 2, the regulating wire wheel 5 is raised and the loosened parking wire 10 is tightened until the parking wire 10 is deflected upward by driving the rotating wheel lever 92 of the balance wheel 91, so that the infrared transmitter a1 and the infrared receiver B1 are blocked by the rotating wheel rod 92 to prevent the signals from being communicated, the outer receivers 94 of the remaining ir receivers B2 and B3 … … Bn can receive signals from several ir transmitters 95 of the ir transmitters a2 and A3 … … An, which indicates that the parking cable 10 has been tensioned;

when the threaded connection block 4 drives the adjusting wire wheel 5 to tighten the parking stay wire 10, the threaded connection block 4 can also drive the metal slip sheet 64 to slide upwards along the resistance wire 62, so that the resistance of the a terminal and the c terminal (or the b terminal and the d terminal) changes, the tensioning degree of the parking stay wire 10 can be judged by observing the change of current on the new energy vehicle-mounted display, when M is less than N, the new energy vehicle-mounted display displays a safety signal, the parking stay wire 10 is increased but still is in the receiving range of the parking stay wire 10 at the moment, when M is more than or equal to N, the new energy vehicle-mounted display displays an early warning signal, the parking stay wire 10 is described to be in an over-stretched condition at the moment, the parking stay wire 10 needs to be replaced in time to avoid parking hand brake failure caused by stretch-breaking, and the safety is greatly improved.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.