CN217901222U

CN217901222U - Testboard rocking arm of adjustable pressure

Info

Publication number: CN217901222U
Application number: CN202222096643.3U
Authority: CN
Inventors: 金国
Original assignee: Shanghai Aojiang Automobile Technology Co ltd
Current assignee: Shanghai Aojiang Automobile Technology Co ltd
Priority date: 2022-08-10
Filing date: 2022-08-10
Publication date: 2022-11-25
Anticipated expiration: 2032-08-10

Abstract

The utility model relates to a but pressure regulation's testboard rocking arm, including first rocking arm unit, second rocking arm unit, the unit of exerting pressure, pressure regulating unit, operating unit and installation unit. The second rocker arm unit can be arranged at the first end of the first rocker arm unit in a vertically-turnable manner; the first end of the pressure applying unit is connected with the first end of the first rocker arm unit, and the second end of the pressure applying unit is arranged in the second rocker arm unit; the pressure regulating unit is arranged in the second rocker arm unit, and the first end of the pressure regulating unit is connected with the second end of the pressure applying unit; the first end of the operation unit is sleeved at the second end of the pressure regulating unit; the installation unit is arranged inside the second rocker arm unit, corresponds to the second end of the operation unit and is arranged in a matched mode. The utility model has the advantages of simple structure, adjust in a flexible way, and need not other work piece operation pressure regulating units, also need not to make a plurality of vehicle windshield wiper rocking arms, need not to make a round trip to change the vehicle windshield wiper rocking arm on the testboard.

Description

Testboard rocking arm of adjustable pressure

Technical Field

The utility model relates to a wiper test equipment technical field especially relates to an adjustable pressure's testboard rocking arm.

Background

Under the condition of testing windshield wiper, in order to obtain the wiping effect of windshield wiper of the different motorcycle types of windshield wiper matched mould, can design the testboard in order to test windshield wiper usually, and install vehicle windshield wiper rocking arm on the testboard to the installation drives windshield wiper and rotates the test. Different wiper rocker springs can be installed in the vehicle wiper rocker according to different vehicle models, so that different vehicle wiper rockers are required to be replaced under the condition that the wiper needs to measure the use data under different pressures, and the related data of the wiper are acquired

In the prior art, in order to measure the data of the wiper under different pressures, because the pressure of the vehicle wiper rocker cannot be flexibly adjusted by the wiper rocker spring, the wiper rocker needs to be frequently replaced, the data of the wiper under different pressures are measured, for example, under the condition of measuring the data of the wiper under two pressures, the vehicle wiper rocker with two different pressures needs to be manufactured, and under the condition of using, the wiper needs to be replaced back and forth, the production and manufacturing cost is undoubtedly increased, and the working efficiency of workers is reduced.

At present, when the pressure to the unable nimble vehicle windshield wiper rocking arm of adjusting of current windshield wiper rocking arm spring leads to need making a plurality of vehicle windshield wiper rocking arms and need measure the data of windshield wiper under different pressure, need make a round trip to change the problem of vehicle windshield wiper rocking arm, has not proposed effectual solution yet.

SUMMERY OF THE UTILITY MODEL

The utility model aims at not enough among the prior art, provide a but pressure regulation's testboard rocking arm to at least, when the pressure of solving the unable nimble vehicle windshield wiper rocking arm of adjusting of current windshield wiper rocking arm spring leads to needing to make a plurality of vehicle windshield wiper rocking arms of preparation and need measure the data of windshield wiper under different pressures, need make a round trip to change the problem of vehicle windshield wiper rocking arm.

In order to achieve the above object, the utility model provides a but pressure regulation's testboard rocking arm, include:

a first rocker arm unit;

the second rocker arm unit is arranged at the first end of the first rocker arm unit in a vertically-turnable manner;

the first end of the pressure applying unit is connected with the first end of the first rocker arm unit, and the second end of the pressure applying unit is arranged in the second rocker arm unit;

the pressure regulating unit is arranged inside the second rocker arm unit, a first end of the pressure regulating unit is connected with a second end of the pressure applying unit, and the pressure regulating unit is used for regulating the length of the pressure applying unit;

the first end of the operation unit is sleeved at the second end of the pressure regulating unit and used for regulating the pressure regulating unit;

and the mounting unit is arranged in the second rocker arm unit, corresponds to the second end of the operating unit, is matched with the second end of the operating unit, and is used for fixing the operating unit.

Further, the first rocker arm unit includes:

a first rocker arm element;

a first connecting element provided at a first end of the first rocker arm element and inserted inside a first end of the second rocker arm unit;

and the two rotating shaft elements are correspondingly arranged at the two ends of the first connecting element and are rotatably embedded in the two side walls of the first end of the second rocker arm unit.

Further, the second rocker arm unit includes:

the first end of the second rocker arm element is of a hollow structure with an opening at the bottom end, the first end of the second rocker arm element is sleeved with the two rotating shaft elements of the first rocker arm unit, and the second end of the second rocker arm element is used for installing a water scraping piece;

an adjustment slot element opened at a bottom end of the first end of the second rocker arm element.

Further, the voltage regulating unit includes:

a mounting element having a first end disposed at an inner top wall of the first end of the second rocker arm unit;

a threaded bore element open at a second end of the mounting element;

the screw element is sleeved in the threaded hole element in a threaded manner, and the first end of the screw element is fixedly connected with the second end of the pressure applying unit;

and the screw cap element is sleeved at the second end of the screw rod element in a threaded manner, and is positioned at one end, far away from the pressure applying unit, of the mounting element.

Further, the mounting element comprises:

the mounting piece is of an L-shaped structure as a whole, the transverse end of the mounting piece is attached to the inner top wall of the second rocker arm element, and the threaded hole element is arranged at the vertical end of the mounting piece;

the first limiting part penetrates through the transverse end of the mounting part and is connected with the inner top wall of the second rocker arm element.

Further, the screw element includes:

the first end of the connecting piece is connected with the second end of the pressure applying unit;

the first end of the screw rod piece is arranged at the second end of the connecting piece and is respectively sleeved in the threaded hole element and the nut element;

and the second limiting part is arranged at the second end of the screw rod.

Further, the operation unit includes:

the adjusting element is sleeved on the screw element of the pressure regulating unit and is used for being sleeved on the nut element of the pressure regulating unit and rotating the nut element;

the sliding chute element is arranged on the periphery of the adjusting element;

the first end of the sliding block element is sleeved in the sliding groove element in a turnable manner;

and the operating element is arranged at the second end of the sliding block element, corresponds to the mounting unit and is matched with the mounting unit.

Further, the mounting unit includes:

a base element disposed on an inner top wall of the second swing arm unit and located at a side of the pressure regulating unit;

a slide bar element disposed at a side wall of the base element;

the spring element is sleeved on the sliding rod element, and the first end of the spring element is fixedly connected with the side wall of the base element;

the first end of the fixing element is sleeved on the sliding rod element and is fixedly connected with the second end of the spring element, and the second end of the fixing element corresponds to and is matched with the second end of the operating unit.

Further, the slide bar element comprises:

the sliding rod is arranged on the base element and is respectively sleeved inside the spring element and the first end of the fixing element;

the limiting plate is arranged at one end, far away from the base element, of the sliding rod.

Further, the fixing member includes:

the first end of the sliding plate is sleeved on the sliding rod element and is fixedly connected with the second end of the spring element;

a baffle disposed at the second end of the slide plate.

The utility model adopts the above technical scheme, compare with prior art, have following technological effect:

(1) The pressure-adjustable test bench rocker arm of the utility model can adjust the elasticity of the pressure applying unit through the pressure adjusting unit, so that the pressure applying unit can adjust the pressure of the second rocker arm unit on the windshield, therefore, the pressure-adjustable test bench rocker arm of the utility model can flexibly adjust the pressure of the second rocker arm unit on the windshield through the pressure adjusting unit and the pressure applying unit without replacing other rocker arms, and solves the problem that the vehicle windshield wiper rocker arm needs to be replaced back and forth when the pressure of the vehicle windshield wiper rocker arm can not be flexibly adjusted by the existing windshield wiper rocker arm spring, so that a plurality of vehicle windshield wiper rocker arms need to be manufactured and the data of the windshield wiper under different pressures need to be measured;

(2) The operation unit is sleeved on the nut element on the pressure regulating unit to enable the pressure regulating unit to regulate the length of the pressure applying unit, and the operation unit is accommodated by the installation unit, so that a worker does not need to carry an additional workpiece to operate the pressure regulating unit, and the working efficiency of the worker is improved;

(3) The utility model has the advantages of simple structure, adjust in a flexible way, and need not other work piece operation pressure regulating units, also need not to make a plurality of vehicle windshield wiper rocking arms, need not to make a round trip to change the vehicle windshield wiper rocking arm on the testboard, have good practical value and popularization and application and worth.

Drawings

Fig. 1 is a schematic structural view of a rocker arm of a test bench of the present invention;

fig. 2 is a bottom view of the rocker arm of the test bed of the present invention;

FIG. 3 is a schematic view of the structure of part A in FIG. 2;

fig. 4 is a schematic structural diagram of the first rocker arm unit of the present invention;

fig. 5 is a schematic structural diagram of a second rocker arm unit of the present invention;

fig. 6 is an assembly view of the pressure adjusting unit, the operating unit and the mounting unit of the present invention;

fig. 7 is a schematic structural diagram of the pressure regulating unit of the present invention;

fig. 8 is a schematic structural view of an operation unit of the present invention;

fig. 9 is a schematic structural view of a longitudinal section of the operation unit of the present invention;

fig. 10 is a schematic structural view of the mounting unit of the present invention;

wherein the reference symbols are:

100. a first rocker arm unit; 110. a first rocker arm element; 120. a first connecting element; 130. a shaft member;

200. a second rocker arm unit; 210. a second rocker arm element; 220. an adjustment groove member;

300. a pressing unit;

400. a voltage regulating unit; 410. mounting a component; 411. a mounting member; 412. a first limit piece; 420. a threaded bore element; 430. a screw element; 431. a connecting member; 432. a screw member; 433. a second limit piece; 440. a nut member;

500. an operation unit; 510. an adjustment element; 520. a chute element; 530. a slider element; 540. an operating element;

600. a mounting unit; 610. a base element; 620. a slide bar element; 621. a slide bar; 622. a limiting plate; 630. a spring element; 640. a fixing member; 641. a slide plate; 642. and a baffle plate.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "upper", "lower", "inner", "outer", "vertical", "horizontal", and the like as used herein are used in the description to indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. Furthermore, the technical features mentioned in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 3, the utility model discloses an adjustable pressure testboard rocker arm, including first rocker arm unit 100, second rocker arm unit 200, pressure unit 300, pressure regulating unit 400, operating unit 500 and installation unit 600. The second end of the first rocker arm unit 100 is in transmission connection with a wiper motor of the test bench and is driven by the wiper motor to rotate up and down; the second rocker arm unit 200 is provided to the first end of the first rocker arm unit 100 to be vertically tiltable, for tilting with the first rocker arm unit 100, and for mounting a wiper element; a first end of the pressing unit 300 is connected to a first end of the first rocker arm unit 100, and a second end of the pressing unit 300 is disposed inside the second rocker arm unit 200, and is used for pulling the second rocker arm unit 200 and giving a downward pulling force to the second rocker arm unit 200, so that the second rocker arm unit 200 presses the windshield glass; the pressure regulating unit 400 is arranged inside the second swing arm unit 200, a first end of the pressure regulating unit 400 is connected with a second end of the pressure applying unit 300, and the pressure regulating unit 400 is used for regulating the length of the pressure applying unit 300 so as to regulate the pressure of the second swing arm unit 200 on the windshield; the first end of the operation unit 500 is sleeved at the second end of the pressure regulating unit 400 and is used for regulating the pressure regulating unit 400; the mounting unit 600 is disposed inside the second swing arm unit 200, and the mounting unit 600 corresponds to and is disposed in cooperation with the second end of the operating unit 500, and is used for receiving and fixing the operating unit 500.

Specifically, a windshield and a wiper motor are installed on the wiper test stand, and the second end of the first rocker arm unit 100 is in transmission connection with the wiper motor and is driven by the wiper motor to turn over.

The connection mode between the first rocker arm unit 100 and the wiper motor belongs to the prior art, and is not described herein again.

The first rocker arm unit 100 and the wiper motor are connected in the same manner as the rocker arm of the vehicle wiper and the wiper motor.

The second swing arm unit 200 is configured to turn with the first swing arm unit 100 to drive a wiper element mounted on the second swing arm unit 200 to wipe up or down the windshield.

Wherein the second rocker arm unit 200 can be flipped with respect to the first rocker arm unit 100 in order to adjust the pressure of the pressing unit 300 applied to the second rocker arm unit 200.

Wherein, in the case that the second swing arm unit 200 drives the wiper element to scrape up or down along with the first swing arm unit 100, the second swing arm unit 200 can press the windshield under the action of the pressing unit 300, and then drive the wiper element to press the windshield.

Wherein the pressing unit 300 may be a vehicle rocker spring.

For example, the pressing unit 300 applies a downward force to the second swing arm unit 200 so that the second swing arm unit 200 drives the wiper element to press down the windshield.

Wherein the pressure adjusting unit 400 is used to adjust the length of the pressure applying unit 300, and then the force applied by the pressure applying unit 300 to the second swing arm unit 200, and finally the pressure with which the wiper element presses the windshield, thereby testing the data relating to the wiper element and the windshield at different pressures, such as testing the coefficient of friction between the wiper element and the windshield at different pressures.

Wherein, the operation unit 500 is used for adjusting the pressure regulating unit 400 to need not the staff and use work pieces such as spanner to adjust the pressure regulating unit 400, thereby reduce taking of work piece, improved staff's work efficiency.

The mounting unit 600 is used for accommodating and fixing the operation unit 500, and prevents the operation unit 500 from being suspended below the second swing arm unit 200 and affecting the upward scraping or downward scraping of the second swing arm unit 200.

Specifically, in the case where it is necessary to adjust the pressure of the wiper element mounted on the second rocker arm unit 200 against the windshield, the worker may remove the second end of the operating unit 500 from the mounting unit 600, and then the worker adjusts the pressure adjusting unit 400 through the operating unit 500 to cause the pressure adjusting unit 400 to adjust the length of the pressing unit 300, and then adjusts the force applied by the pressing unit 300 to the second rocker arm unit 200, thereby enabling flexible adjustment of the force applied to the second rocker arm unit 200.

The utility model discloses can adjust the pressure that the unit 300 of exerting pressure applyed to second rocking arm unit 200 through pressure regulating unit 400 to need not to make the testboard rocking arm of multiple pressure, and under the condition that windshield on the different model vehicles carries out the test, also need not to change the testboard rocking arm, when the pressure of having solved current windshield wiper rocking arm spring and can't adjusting vehicle windshield wiper rocking arm in a flexible way leads to need to make a plurality of vehicle windshield wiper rocking arms and need measure the data of windshield wiper under different pressures, need make a round trip to change the problem of vehicle windshield wiper rocking arm.

As shown in fig. 4, the first rocker arm unit 100 includes a first rocker arm element 110, a first connecting element 120, and two pivot elements 130. Wherein, the second end of the first rocker element 110 is in transmission connection with a wiper motor; the first connecting member 120 is provided at the first end of the first rocker arm member 110 and inserted into the interior of the first end of the second rocker arm unit 200; the two rotating shaft elements 130 are correspondingly disposed at two ends of the first connecting element 120, and are rotatably embedded in two sidewalls of the first end of the second swing arm unit 200, for being connected with the second swing arm unit 200 in an overturning manner.

Wherein the first rocker element 110 is a vehicle wiper rocker.

Wherein the first connecting element 120 is a connecting shaft.

The shaft element 130 is a rotating shaft.

Specifically, in the case where the second rocker arm unit 200 is flipped up with respect to the first rocker arm unit 100, the second rocker arm unit 200 can perform relative sliding with respect to the pivot member 130, thereby facilitating adjustment or maintenance of the devices inside the second rocker arm unit 200.

As shown in fig. 5, the second rocker arm unit 200 includes a second rocker arm element 210 and an adjustment slot element 220. The first end of the second rocker element 210 is a hollow structure with an open bottom end, the first end of the second rocker element 210 is sleeved with the two rotating shaft elements 130 of the first rocker unit 100, and the second end of the second rocker element 210 is used for installing the water scraping part; the adjustment slot member 220 opens at a bottom end of the first end of the second rocker arm member 210 for facilitating adjustment of the pressure regulating unit 400 by the operating unit 500.

Two grooves are formed on two side walls of the first end of the second rocker arm element 210, and the two grooves are correspondingly sleeved with the two rotating shaft elements 130, so that the second rocker arm element 210 and the first rocker arm element 110 can rotate relatively.

Wherein the second rocker arm element 210 is used to provide a mounting support for mounting the pressure regulating unit 400 and the mounting unit 600.

The adjustment groove element 220 is disposed on two opposite sidewalls of the bottom opening of the second rocker arm element 210, and the depth of the adjustment groove element 220 can be adjusted according to the material of the second rocker arm element 210, so as to prevent the second rocker arm element 210 from bending at the adjustment groove element 220.

As shown in fig. 6 to 7, the pressure-regulating unit 400 includes a mounting member 410, a screw hole member 420, a screw member 430, and a nut member 440. Wherein a first end of the mounting element 410 is disposed on an inner top wall of the first end of the second rocker arm unit 200 for providing a supporting function; a threaded bore element 420 opens at a second end of the mounting element 410 for mounting the screw element 430; the screw element 430 is threadedly sleeved inside the threaded hole element 420, and a first end of the screw element 430 is fixedly connected with a second end of the pressing unit 300, so as to adjust the length of the pressing unit 300; the nut member 440 is threadedly received at the second end of the screw member 430, and the nut member 440 is located at an end of the mounting member 410 remote from the pressing unit 300, for adjusting the position of the screw member 430.

Wherein a mounting member 410 is mounted to an inner top wall of the second rocker arm member 210 for supporting the screw member 430 in cooperation with the screw hole member 420.

Wherein the screw element 430 can be moved close to or away from the pressing unit 300 by the nut element 440, so as to adjust the length of the pressing unit 300 and change the pressure applied by the pressing unit 300 to the second rocker arm element 210.

Specifically, in case that it is required to adjust the pressure applied to the second rocker arm element 210 by the pressing unit 300, the worker may rotate the nut member 440 by the operating unit 500 so as to move the screw member 430 closer to or away from the pressing unit 300, to change the pressure of the pressing unit 300 to the second rocker arm element 210.

Specifically, in the case where the pressing unit 300 contracts, the pulling force generated by the pressing unit 300 is reduced, thereby reducing the pressing force to the second rocker arm element 210; in the case where the pressing unit 300 is extended, the pulling force generated by the pressing unit 300 is increased, thereby increasing the pressing force to the second rocker arm element 210.

As shown in fig. 7, the mounting member 410 includes a mounting part 411 and a first stopper 412. Wherein, the mounting part 411 is of an L-shaped structure as a whole, and the transverse end of the mounting part 411 is attached to the inner top wall of the second rocker arm element 210, wherein the threaded hole element 420 is opened at the vertical end of the mounting part 411; the first limiting member 412 is disposed through the lateral end of the mounting member 411 and connected to the inner top wall of the second rocker arm element 210.

Specifically, a first through hole is formed at a lateral end of the mounting member 411, a second through hole is formed in an inner top wall of the second rocker arm element 210, and a first end of the first limiting member 412 passes through the first through hole and the second through hole, so as to fix the mounting member 411 to the inner top wall of the second rocker arm element 210.

The first limiting member 412 includes a bolt and a nut, wherein a screw end of the bolt passes through the first through hole and the second through hole; a nut is threadedly coupled to the screw end of the bolt to secure the mounting member 411 to the inner top wall of the second rocker arm member 210.

Wherein the mounting member 411 is made of a metal structure.

As shown in fig. 7, the screw member 430 includes a connecting member 431, a screw member 432, and a second stopper 433. Wherein, the first end of the connecting member 431 is connected with the second end of the pressing unit 300 for driving the pressing unit 300 to extend or contract; the first end of the screw member 432 is disposed at the second end of the connecting member 431, and is respectively sleeved inside the threaded hole member 420 and the nut member 440, for driving the connecting member 431 to approach or leave the pressing unit 300; the second limiting member 433 is disposed at the second end of the screw member 432, and is used for limiting the nut member 440 and the operating unit 500, so as to prevent the nut member 440 and the operating unit 500 from separating from the screw member 432.

Wherein the connecting member 431 is provided in a spherical shape and fixedly connected to the second end of the pressing unit 300, for contracting the pressing unit 300 when approaching the pressing unit 300 and stretching the pressing unit 300 when departing from the pressing unit 300.

Wherein the screw member 432 is a screw.

The second limiting member 433 can be a nut or a limiting plate.

The second stopper 433 is used to prevent the nut element 440 from being separated from the screw member 432, and to limit the operation unit 500, so as to prevent the operation unit 500 from being separated from the screw member 432.

As shown in fig. 6, 8 to 9, the operating unit 500 includes an adjusting element 510, a chute element 520, a slider element 530, and an operating element 540. The adjusting element 510 is sleeved on the screw element 430 of the pressure regulating unit 400, and is configured to be sleeved on the nut element 440 of the pressure regulating unit 400 and rotate the nut element 440; the sliding groove element 520 is arranged on the periphery of the adjusting element 510, is used for installing the sliding block element 530 and can enable the sliding block element 530 to slide and turn inside the sliding groove element 520; the first end of the sliding block element 530 is rotatably sleeved inside the sliding groove element 520; the operating element 540 is provided at a second end of the slider element 530 and corresponds to and is cooperatively arranged with the mounting unit 600 to facilitate rotation of the adjusting element 510.

The adjusting element 510 is sleeved on the screw member 432, and can be sleeved on the nut member 440, and is blocked by the second limiting member 433, so as not to be separated from the screw member 432.

Wherein the adjustment element 510 is an annular structure with an internal hexagonal bore.

Wherein the longitudinal section of the chute member 520 is provided in a convex shape.

Wherein the slider element 530 is a herringbone structure formed by two cylinders being spliced.

Wherein the operating element 540 comprises an operating rod and an operating ring. Wherein a first end of the operating rod is fixedly connected with a second end of the slider element 530; the operating ring is disposed at the second end of the operating rod for being coupled with the mounting unit 600.

Specifically, in the case that the adjustment of the rotating nut member 440 is required, the worker fits the adjusting member 510 on the nut member 440, and then turns the operating member 540 so as to rotate the adjusting member 510 via the operating member 540, and then the adjusting member 510 rotates the nut member 440.

Wherein, under the condition that the operating element 540 needs to be retracted, the worker drives the slider element 530 to slide in the inside of the sliding groove element 520 through the operating element 540, and under the condition that the slider element 530 slides to the edge of the sliding groove element 520, the worker turns over the operating element 540 and drives the slider element 530 to turn over in the inside of the sliding groove element 520, so that the operating ring of the operating element 540 is sleeved on the mounting unit 600 to retract the operating element 540.

As shown in fig. 6 and 10, the mounting unit 600 includes a base member 610, a slide bar member 620, a spring member 630, and a fixing member 640. Wherein, the base element 610 is arranged on the inner top wall of the second rocker arm unit 200 and positioned at the side of the pressure regulating unit 400 for providing a mounting and supporting function; a slide rod element 620 is provided at a sidewall of the base element 610 for mounting the spring element 630 and the fixing element 640; the spring element 630 is disposed around the sliding rod element 620, and a first end of the spring element 630 is fixedly connected to a sidewall of the base element 610 for driving the fixing element 640 to tighten the operating element 540; the first end of the fixing element 640 is sleeved on the sliding rod element 620 and is fixedly connected to the second end of the spring element 630, and the second end of the fixing element 640 corresponds to and is matched with the second end of the operating unit 500 for retracting the operating element 540.

Specifically, the base member 610 is mounted to the inner top wall of the second rocker arm member 210; the sliding rod element 620 is mounted on a sidewall of the base element 610, and the fixing element 640 is configured to be sleeved in the operating ring of the operating element 540 to receive and fix the operating element 540.

Specifically, when the operating element 540 is retracted, the worker presses the fixing element 640, and the operating ring of the operating element 540 is sleeved on the fixing element 640, then the spring element 630 is reset, and the fixing element 640 drives the operating element 540 to move until the operating ring of the operating element 540 is tightly abutted to the fixing element 640, and the adjusting element 510 connected to the operating element 540 is abutted to the second stopper 433, so that the operating element 540 is accommodated in the second rocker element 210, and the operating element 540 is prevented from being suspended below the second rocker element 210.

The sliding rod element 620 includes a sliding rod 621 and a limit plate 622. The sliding rod 621 is disposed on the base member 610, and is respectively sleeved inside the spring element 630 and inside the first end of the fixing element 640, so that the fixing element 640 moves along the sliding rod 621 under the action of the spring element 630; the limiting plate 622 is disposed at an end of the sliding rod 621 away from the base element 610, for preventing the fixing element 640 from slipping off the sliding rod 621.

The sliding rod 621 and the limiting plate 622 are made of metal material.

The fixing member 640 includes a slide 641 and a blocking plate 642. Wherein, the first end of the sliding plate 641 is sleeved on the sliding rod element 620, and is fixedly connected to the second end of the spring element 630, for being sleeved in the operating ring of the operating element 540; a blocking plate 642 is disposed at the second end of the sliding plate 641 for preventing the operating element 540 from being disengaged from the sliding plate 641.

The first end of the sliding plate 641 is provided with a third through hole for being sleeved on the sliding rod 621.

Wherein, the slide 641 and the baffle 642 are spliced to form an L-shaped structure.

The working principle of the utility model is as follows:

in the event that it is necessary to adjust the pressure of the second swing arm unit 200 against the windscreen, the operator tips the second swing arm element 210 upwards, the second swing arm element 210 being tipped upwards relative to the first swing arm element 110 by means of the two pivot elements 130;

the worker removes the operation ring of the operation member 540 from the slide plate 641 and then rotates the operation member 540 such that the operation member 540 is rotated to be perpendicular to the adjustment member 510;

the worker fits the adjusting element 510 on the nut element 440, and drives the adjusting element 510 to rotate through the operating element 540, the adjusting element 510 drives the nut element 440 to rotate, and then the nut element 440 drives the screw member 432 to move close to or away from the pressing unit 300, so as to adjust the pressing force applied by the pressing unit 300 to the second rocker arm element 210.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A testboard rocking arm of adjustable pressure, its characterized in that includes:

a first rocker arm unit;

the second rocker arm unit is arranged at the first end of the first rocker arm unit in a manner of being capable of being turned upside down;

2. The test stand rocker arm of claim 1, wherein the first rocker arm unit comprises:

a first rocker arm element;

3. The test stand rocker arm of claim 1, wherein the second rocker arm unit comprises:

the first end of the second rocker arm element is of a hollow structure with an opening at the bottom end, the first end of the second rocker arm element is sleeved with the two rotating shaft elements of the first rocker arm unit, and the second end of the second rocker arm element is used for mounting the water scraping part;

4. The test stand rocker arm of claim 1, wherein the pressure regulating unit comprises:

a threaded bore element open at a second end of the mounting element;

and the screw cap element is sleeved at the second end of the screw rod element in a threaded manner, and is positioned at one end of the mounting element, which is far away from the pressure applying unit.

5. The test stand rocker arm of claim 4, wherein the mounting element comprises:

the mounting piece is of an L-shaped structure as a whole, the transverse end of the mounting piece is attached to the inner top wall of the second rocker arm unit, and the threaded hole element is arranged at the vertical end of the mounting piece;

and the first limiting part is arranged at the transverse end of the mounting part in a penetrating manner and is connected with the inner top wall of the second rocker arm unit.

6. The test stand rocker arm of claim 4, wherein the screw element comprises:

and the second limiting part is arranged at the second end of the screw rod.

7. The test stand rocker arm of claim 1, wherein the operating unit comprises:

the adjusting element is sleeved on the screw element of the pressure regulating unit and used for being sleeved on the nut element of the pressure regulating unit and rotating the nut element;

a chute element that opens at the periphery of the adjusting element;

the first end of the sliding block element is sleeved in the sliding chute element in a turnable manner;

8. The test stand rocker arm of claim 1, wherein the mounting unit comprises:

a slide bar element disposed at a side wall of the base element;

9. The test stand rocker arm of claim 8, wherein the slide bar element comprises:

the sliding rod is arranged on the base element and is respectively sleeved in the spring element and the first end of the fixing element;

and the limiting plate is arranged at one end of the sliding rod, which is far away from the base element.

10. The test stand rocker arm of claim 8, wherein the securing element comprises:

a baffle disposed at the second end of the slide plate.