KR20200076928A - Durability test equipment with Harsh environment - Google Patents

Abstract

The present invention relates to a harsh environment durability test device, which comprises: a body having a closed space for accommodating an object to be tested therein, and having a temperature in the closed space to be changed within a predetermined temperature range; a cylinder unit installed on an upper part of the body, and providing power in a vertical direction; a wire member vertically disposed in the closed space, having an upper end connected to one side of the cylinder unit at the outside of the body, and vertically moved by receiving power from the cylinder unit; and a push member connected to a lower end of the wire member, and moved together when the wire member is vertically moved to repeatedly press a button of the object to be tested. According to the present invention, when the durability of the button of the object to be tested in the closed space of the body is tested, deterioration of durability and test reliability can be prevented because a part to be tested is frozen to a low temperature.

Description

Durability test equipment with Harsh environment

The present invention relates to a harsh environment durability test apparatus, and more specifically, when testing the button durability of a test object in an enclosed space of the main body, a component for testing is frozen by a low temperature to deteriorate durability or test reliability. It relates to a harsh environment durability test device that can prevent the fall in advance.

Currently, the vehicle has been added to various functions that enable the user to provide a more stable and comfortable driving condition beyond the basic transport function. As an extension of the vehicle, smooth and relaxed driving is possible in complex traffic situations such as in the city center. To this end, the proportion of vehicles equipped with automatic transmissions is increasing significantly.

When the automatic transmission sets the desired shift range through the shift lever, the driver's set shift range is transmitted to the Transmission Control Unit (TCU) and various controls that control the transmission to control power supply and shutdown when the vehicle starts. In addition, full-length control is performed, such as setting, canceling, and reversing the shift stage in the shift range set during driving.

Meanwhile, in recent years, various functions have been added to enable a user to provide a more stable and comfortable driving state beyond a function as a basic vehicle, and as one example, electronics for an engine and a transmission as a core driving element of a vehicle Various components, including control, have been digitized or electronicization stages are in progress.

In addition, the use of electronic shifting devices that perform shift stage control electronically rather than mechanically is increasing for operator convenience.

The SBW (Shift By Wire) system, which is an electronic transmission, adopts an electronic transmission system that does not have a mechanical connection structure between the transmission and the shift lever, unlike the conventional mechanical transmission.

That is, when the sensor value generated when the shift lever or button is operated is transmitted to the TCU, the solenoid or electric motor operates by an electronic signal commanded by the TCU, and the hydraulic circuit for each shift range is operated by the operation of the solenoid or electric motor. When hydraulic pressure is applied or blocked, shift control is performed electronically.

Such an SBW-based automatic transmission transmits electric signals to the TCU through a simple operation of a shift lever or button, thereby shifting to forward (D) and reverse (R), neutral (N) and parking (P) ranges. In addition to the advantage that the operation is more easily performed, it is possible to miniaturize the shift lever, thereby securing a wide space between the driver's seat and the passenger seat.

In particular, the button-type electronic transmission has an advantage that the shifting method is easy and the size of the shifting device is more compact because the shifting of the shifting range is intuitive, and research and development of the shifting device is continuously conducted, and stability is required. As one of the automotive parts, it is necessary to test for malfunction and durability in harsh environments before shipping.

1 is a view schematically showing a harsh environment durability test apparatus for a conventional button-type electronic transmission.

As shown in FIG. 1, the conventional harsh environment durability test apparatus 100 for a button-type electronic transmission has a main body 110 in which a sealed space 111 in which a test object T is accommodated is formed, and a main body 110. The pressure block 120 which is installed to be movable in the vertical direction on the upper side of the test object among the inside side, and is installed inside the main body 110 and one side is connected to the pressure block 120 to move the Shanghai power to the pressure block 120 It is composed of a power means 130 for providing.

Such, the harsh environment durability test apparatus 100 for a button-type electronic transmission device first seals the inside of the main body 110 and tests the inside of the main body 110, that is, the closed space 111 within a preset temperature range. After setting the desired temperature, the motor and the power means 130 connected to a plurality of gear parts are driven to cause the pressure block 120 to move up and down, so that the test object is pressed by the pressure block 120, that is, the button of the electronic transmission. While repeatedly pressurizing, while changing the temperature in the enclosed space 111, the button durability of the electronic transmission T according to the temperature change is tested.

However, in order to test the durability of the button of the electronic transmission T according to the temperature change, the durability test apparatus 100 for a button-type electronic transmission is pressurized because the durability test is performed at an extremely low temperature of -50°C or less in the case of low temperature. In order to transmit power to the block 120, the power means 130 located inside the main body 110 is frozen and its lifespan is significantly shortened, or the button reliability of the electronic transmission (T) is not properly performed, resulting in reliability of testing. There was a problem such as significantly reduced.

The present invention has been devised to solve the problems as described above, and the object of the present invention is to test the durability of a button of a test object in an enclosed space of the main body, thereby lowering durability due to freezing of parts for testing due to low temperature. It is to provide a harsh environment durability test device that can prevent the test elongation from being lowered.

Another object of the present invention is to provide a harsh environment durability test apparatus capable of greatly improving the life of a push member by reducing frictional forces between a button and a push member of a test object.

Another object of the present invention is to combine the one side of the wire member to the upper end of the body portion, extend it further to form an extended wire, and then press the button through the support portion to firstly cushion the roller member that is moved up and down to release the button. It is to provide a harsh environment durability test apparatus capable of further improving the efficiency of durability testing by minimizing damage to the roller member due to repeated pressing and reducing external force applied to the button when the button is pressed.

In a harsh environment durability test apparatus for repeatedly testing a button formed on a test object within a preset temperature range to test the durability of the button, an enclosed space in which the test object is accommodated is formed, and the temperature in the enclosed space is preset. The main body is changed between the temperature range, the cylinder unit installed on the upper portion of the main body and providing power in the vertical direction, and disposed vertically in the closed space, the upper end of the cylinder unit from the outside of the main body And a push member connected to the lower end of the wire member and the wire member that is moved up and down by receiving power from the cylinder unit, and when the wire member moves up and down, the push member repeatedly pressing the button of the test object It provides a harsh environment durability test device comprising a.

And, it is preferable to further include a covering member formed to surround the outer surface of the wire member and a position retaining nozzle installed to surround the outer surface of the lower end of one side of the wire member.

In addition, the position maintaining nozzle includes a plurality of block pipes, and the ends of the block pipes and the block pipes are connected to each other in an interference-fitting state, so that the connection part is freely deformed, and the deformed state can be maintained.

In addition, the push member is connected to the lower end of the wire member on one side of the upper side, the body member that moves together when the wire member moves up and down, and is rotatably installed at the lower end of the body part, and the body part moves up and down. In this case, it is preferable to include a roller member that repeatedly presses the button of the test object.

In addition, the push member has a space portion formed inside the body portion, the roller member is installed to be movable up and down at predetermined intervals at the lower end of the body portion, has elasticity, is interposed between the body portion and the roller member It may further include a buffer.

In addition, the buffer part is integrally extended from the lower end of the wire member and is coupled to a buffer wire disposed in the space part and an end of the buffer wire, and when the roller member is moved upward, it is in contact with one side of the roller member. It is preferable to include a support for elastically supporting the roller member.

According to the present invention as described above, when testing the button durability of the test object in the closed space of the main body, it can be prevented that the parts for testing are frozen due to the low temperature and the durability is reduced or the test reliability is lowered. It has an effect.

In addition, the present invention has an effect capable of greatly improving the life of the push member by reducing the frictional force between the button and the push member of the test object.

In addition, the present invention is to repeatedly press the button by first cushioning the roller member that moves up and down as the one side of the wire member is coupled to the upper end of the body portion, which is further extended to form an extended wire and then presses the button through the support portion. There is an effect that the efficiency of the durability test can be further improved by minimizing the damage to the roller member due to the ship and also reducing the external force applied to the button when the button is pressed.

1 is a view schematically showing a harsh environment durability test device for a conventional button-type electronic transmission,
Figure 2 is a cross-sectional view schematically showing the durability test object according to an embodiment of the present invention,
3 is an enlarged view of'A' shown in FIG. 2,
Figure 4 is a cross-sectional view of the wire member, the coating member and the position maintenance nozzle according to an embodiment of the present invention,
Figure 5 is a view showing a state of disposing the position of the push member through the position maintenance nozzle according to an embodiment of the present invention,
6 is a view showing a state in which the push member presses the button by moving the wire member downward according to an embodiment of the present invention,
7 is a view showing a cross-sectional view of a push member according to another embodiment of the present invention,
8 is a view showing a state in which the first member is buffered while being supported by the buffer unit when the roller member according to another embodiment of the present invention moves upward,
9 is a view showing a state in which the second member is buffered by the wire member when the push member according to another embodiment of the present invention moves further downward.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a cross-sectional view schematically showing the durability test object according to an embodiment of the present invention, Figure 3 is an enlarged view of'A' shown in Figure 2, Figure 4 is a wire member according to an embodiment of the present invention , It is a cross-sectional view of the coating member and the position maintaining nozzle.

2 to 4, the harsh environment durability test apparatus 1 according to an embodiment of the present invention includes a main body 10, a cylinder unit 20, a wire member 30, and a covering member 40 ), and a position maintaining nozzle 50 and a push member 60.

The main body 10 has a rectangular-shaped housing with a front surface opened so that a sealed space 11a is accommodated in which a button-type electronic transmission (hereinafter referred to as a'test object') is accommodated and the sealed space 11a is exposed to the outside. (11), and includes a door part (not shown) that opens and closes the front surface of the housing 11, and provides an installation area for each configuration, and also serves to provide a test space for a test object.

In this way, the sealed space 11a, the main body 10 providing a test space for the test object, is provided with a temperature control means such as a heater, a heating wire or a heat exchanger, a nitrogen injection device, etc. when the housing 11 is sealed by a door part. By adjusting the temperature of the sealed space 11a within a preset temperature range, the button durability test of the test object is performed in a harsh environment such as high temperature or low temperature.

The cylinder unit 20 includes a cylinder body 21 vertically installed on the upper portion of the main body 10 and a cylinder rod 22 that is elastically coupled downward from the lower end of the cylinder body 21, The wire member 30, which will be described later, is connected to the lower end to serve to provide a moving force in the vertical direction to the wire member 30. Such a cylinder unit 20 is commercially available to a person having ordinary knowledge in the art. It is obvious that it is known to be able to purchase and use what is supplied as, and detailed configuration description will be omitted.

The wire member 30 may be made of stainless steel wire to minimize corrosion, and the upper end is connected to the lower end of the cylinder rod 22 described above, and when the cylinder rod 22 expands and contracts from the cylinder body 21. By moving in the direction, the push member 60 to be described later serves to repeatedly press the button of the test object.

Accordingly, the wire member 30 has elasticity, but is preferably formed with a diameter having a tension sufficient to press a button of a test object.

The coating member 40 is preferably a synthetic resin material that is resistant to high and low temperatures, and is formed to surround the outer surface of the wire member 30 to serve to minimize the state change of the wire member 30 against temperature changes. Do it.

Position retaining nozzle 50 is a plurality of block pipes are connected to each other in an interference-fitting state so that the connection part is freely deformed, that is, the deformed state is maintained, that is, the bent form can be maintained while being bent in a desired shape. , It is installed in a form that wraps the outer surface of the lower end of the wire member 30 to serve to control the pressing position of the push member 60 to be described later by changing the shape according to the button position of the test object to be pressed.

The push member 60 is formed in a substantially block shape and has a body portion 61 coupled to the lower end of the wire member 30 at the upper end, and a roller member 62 rotatably installed at the lower end of the body portion 61. It is configured to include, and when the wire member 30 is moved in the vertical direction, while moving together it serves to repeatedly press the button of the test object located below.

Here, the roller member 62 minimizes the frictional force with the button by rotating the body portion 61 at the moment when it contacts the button while moving downward, thereby preventing damage or damage to the roller member 62 or button of the test object according to repeated contact. It serves to prevent.

5 is a view showing a state of disposing the position of the push member through the position maintaining nozzle according to an embodiment of the present invention, Figure 6 is a wire member according to an embodiment of the present invention moves downward to push member It is a diagram showing a state in which the button is pressed.

The operation of the harsh environment durability test apparatus 1 according to an embodiment of the present invention having such a configuration will be described with reference to FIGS. 5 to 6 as follows.

First, the test object is accommodated in the interior of the main body 10, that is, in the enclosed space 11a, and the position maintaining nozzle 50 is adjusted so that the push member 60 is disposed at a position corresponding to the button top of the test object. .

After arranging the position of the push member 60, the door part is closed to close the sealed space 11a of the main body 10, and the sealed space 11a is set to a temperature to be tested within a preset temperature range.

Thereafter, as the cylinder unit 20 is driven, when the cylinder rod 22 moves from the lower portion of the cylinder body 21 in the inner and outer directions to expand and contract, the wire member 30 connected thereto is moved and moved together, and the wire member is moved. The push member 60 connected to the lower end of the 30 also presses the button of the test object repeatedly while moving in the vertical direction according to the vertical movement of the wire member 30.

Accordingly, the temperature in the sealed space 11a is changed within a set temperature range to perform a durability test for the button of the test object, and when the test is completed, the test object is taken out.

As described above, the cylinder unit 20 according to an embodiment of the present invention can be easily tested for durability of a test object while being disposed outside the sealed space 11a, that is, the test unit, as well as power means at cryogenic temperatures. It has a feature that can prevent the damage caused by the freezing phenomenon or error of the test operation.

7 is a view showing a cross-sectional view of a push member according to another embodiment of the present invention, Figure 8 is a roller member according to another embodiment of the present invention is a state in which the primary buffer while being supported by the buffer unit 9 is a view showing a state in which the push member according to another embodiment of the present invention is secondary buffered by the wire member when it moves downward.

The basic configuration of the embodiment of FIGS. 7 to 9 is the same as that of the embodiment of FIGS. 2 to 7, but the shock applied to the wire member 30 and the roller member 62 as the button is pressed repeatedly improves their lifespan. It is formed in a structure that can be made.

As shown in FIG. 7, in the present embodiment, unlike the previous embodiment, a space part 61a is formed inside the body part 61 of the push member 60, and the roller member 62 of the body part 61 It is rotatably installed in the lower half, and is installed to be movable up and down at predetermined intervals, and a buffer portion 63 is interposed between the inner surface of the body portion 61 and the roller member 62.

Here, the buffer portion 63 includes a buffer wire 63a extending downward from the lower end of the wire member 30 and a support portion 63b coupled to an end of the buffer wire 63a, and includes a roller member 62 ) Is in contact with the button and moves upward, supporting it to buffer the contact shock first.

If this embodiment is described in more detail, as shown in FIG. 9, when the push member 60 moves downward and the roller member 62 presses the button, the roller member 62 moves upward by its repulsive force. Then, the moving force of the roller member 62 moved upward is transferred to the extension wire.

At this time, in the state where one side of the lower end of the wire member 30 is fixedly coupled to one side of the outer surface of the body portion 61, as the external force is applied upwardly to the lower end of the extension wire, the extension wire is bent in one direction and the roller member 62 The shock applied to the primary buffer, and when a greater force is transmitted to the push member 60 as a whole, the wire member 30 is bent at a predetermined angle to secondary cushion.

As described above, the shock applied to the push member 60 is first buffered through the shock absorber 63 to more easily disperse the shock, thereby significantly improving the component life.

Other structures are the same as the above-described basic embodiment, and the rest of the description will be omitted.

Although the present invention has been described in connection with the above-mentioned embodiment, it is possible to make various modifications or variations without departing from the spirit and scope of the invention. Accordingly, the scope of the appended claims will include such modifications or variations that fall within the gist of the present invention.

10 body 11 housing
11a: closed space 20: cylinder unit
21: cylinder body 22: cylinder rod
30: wire member 40: covering member
50: Position retaining nozzle 60: Push member
61: body portion 61a: space portion
62: roller member 63: buffer portion
63a: buffer wire 63b: support

Claims (6)

In a harsh environment durability test device for testing the durability of the button by repeatedly pressing the button formed on the test object within a preset temperature range,
A main body in which a closed space in which the test object is accommodated is formed, and a temperature in the closed space is changed between preset temperature ranges;
A cylinder unit installed on an external side of the upper body and providing power in the vertical direction;
A wire member disposed vertically in the closed space, the upper end being connected to one side of the cylinder unit from the outside of the main body, and being moved up and down by receiving power from the cylinder unit; And
And a push member connected to a lower end of the wire member and moving together when the wire member moves up and down to repeatedly press a button of the test object.
According to claim 1,
A coating member formed to surround the outer surface of the wire member; And
A harsh environment durability test device further comprising a position maintaining nozzle installed to surround an outer surface of one side of the lower side of the one side of the wire member.
According to claim 1,
The position maintaining nozzle includes a plurality of block pipes, and the end portions of the block pipes and the block pipes are connected to each other in an interference-fitting state to freely deform the connection portion and maintain the deformed state. .
According to claim 1,
The push member
A lower body portion of the wire member connected to an upper side, and a body part moving together when the wire member moves up and down;
A harsh environment durability test device comprising a roller member rotatably installed at a lower end of the body, and repeatedly pressing a button of the test object when the body moves up and down.
According to claim 4,
The push member is formed with a space portion inside the body portion, the roller member is installed to be movable up and down at predetermined intervals at the lower end of the body portion,
Harsh environment durability test device, characterized in that it further comprises a cushioning portion having an elasticity and interposed between the body portion and the roller member.
The method of claim 5,
The buffer part
A buffer wire extending integrally from the lower end of the wire member and disposed in the space portion; And
It is coupled to the end of the buffer wire, the harsh environment durability test device comprising a support for elastically supporting the roller member in contact with one side of the roller member when the roller member is moved upward.

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