KR20060056116A - Structure of installing check ball on the separating plate for valve body in automatic transmission - Google Patents

Abstract

Disclosed is a check ball mounting structure of a separating plate for a valve body of an automatic transmission. The check ball mounting structure of the separating plate for the valve body of the disclosed automatic transmission includes an automatic transmission in which a check ball is mounted to allow oil flow in one direction of the first oil passage and oil flow in the opposite direction. In the check ball mounting structure of the separating plate for the valve body, the seating portion is characterized in that the first seating groove is formed at a predetermined depth so that the check ball is seated while being in surface contact with the seating portion.

According to the present invention, the transmission quality of the automatic transmission is improved, system waste is not generated, and durability is improved.

Automatic transmission, valve body, separating plate, check ball

Description

STRUCTURE OF INSTALLING CHECK BALL ON THE SEPARATING PLATE FOR VALVE BODY IN AUTOMATIC TRANSMISSION}

1 is a view schematically showing the configuration of a valve body of a general automatic transmission.

Figure 2 is a schematic view showing a check ball mounting structure of the separating plate of Figure 1 in the prior art.

3a and 3b schematically show an embodiment of the check ball mounting structure of the separating plate for the valve body of the automatic transmission according to the present invention.

4a and 4b schematically show another embodiment of the check ball mounting structure of the separating plate for the valve body of the automatic transmission according to the present invention.

<Description of the symbols for the main parts of the drawings>

50. Checkball

60. Separating Plate

61. Seat

61a. 1st oil passage

61b. First seating groove                 

70. Elastic member

71. Second oil passage

72. Second settling groove

73. Coupling groove

The present invention relates to a check ball mounting structure of the separating plate for valve body of the automatic transmission, and more particularly to a check ball mounting structure of the valve body separating plate for automatic transmission improved to improve the shifting feeling and durability. will be.

In general, an automatic transmission of an automobile is composed of a torque converter, a transmission gear mechanism connected to the torque converter, and a hydraulic control circuit for selectively automatically shifting gears of the transmission gear mechanism in accordance with the driving state of the vehicle.

The torque converter includes an impeller that is directly connected to the crankshaft of the engine and rotates, a turbine that is directly connected to the input shaft of the automatic transmission and opposed to the impeller, starts the impeller within a predetermined operating range, and transmits kinetic energy to the turbine. It is composed of a stator for changing the direction of oil to be recovered to increase the rotational force of the impeller again.

As described above, the output of the engine transmitted to the impeller of the torque converter is transmitted to the transmission gear mechanism through a turbine, wherein the transmission gear mechanism is a planetary gear device composed of a plurality of sun gears, ring gears and carriers, each gear By properly controlling the rotation of the gears, the rotational force supplied from the turbine by the relative movement between the gears is converted into an appropriate transmission ratio and transmitted to the propulsion shaft.

Here, a plurality of friction members are used to control each gear of the transmission gear mechanism, and the friction members generally include a front clutch, a rear clutch, a low-reverse brake, an end clutch, and a kickdown brake. The friction member is operated by the hydraulic pressure generated by the oil pump operated according to the rotation of the engine.

That is, when sensors mounted to each part of the vehicle transmits various states of the vehicle to the transmission control unit (TCU), the TCU is provided with a plurality of solenoid valves installed in hydraulic lines provided with hydraulic oil generated from the oil pump according to the state of the vehicle. To control.

When a partial pressure change is generated in the hydraulic line by the operation of the solenoid valve, a plurality of valve mechanisms installed in the hydraulic line are operated to change the hydraulic action state to the friction member, and the friction member acts as a hydraulic pressure. According to the condition, the gear rotation of the transmission gear mechanism is adjusted.

For the hydraulic control as described above, a valve body provided with a plurality of valve mechanisms is used in an automatic transmission, and the valve body includes an upper body 40 and an intermediate as shown in FIG. Separating plate interposed between an intermediate plate 51 and a lower body 52 and between the upper body 40 and the intermediate plate 51 and the lower body 52. It consists of a separating plate (53), which is equipped with a plurality of valve mechanisms to form a flow path.

In particular, as shown in Figure 2, the middle of which is divided by the separating plate 53, one direction of the oil path (Oil Path) (53a) using a check ball (50) is the oil flow To prevent oil flow in the opposite direction.

However, the seating portion A on which the check ball 50 is seated is undesired due to unavoidable machining tolerances during machining and deformation due to aggressiveness during operation of the check ball 50 made of steel. Oil flow occurs.

This lowers the shift quality due to malfunction of the valve body and leads to system failure.

The present invention has been made to solve the above problems, and an object thereof is to provide a check ball mounting structure of a separator plate for valve body of an automatic transmission in which shift quality is improved and system closing is prevented.

The check ball mounting structure of the separating plate for the valve body of the automatic transmission of the present invention for achieving the above object, one direction of the first oil passage to prevent the oil flow, in the opposite direction to enable the oil flow In a check ball mounting structure of a separating plate for a valve body of an automatic transmission provided with a seating portion on which a check ball is seated, the seating portion has a first seating groove at a predetermined depth such that the check ball is seated while being in surface contact with the seating portion. It is characterized by that formed.                     

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

3A and 3B are cross-sectional views schematically showing the configuration of the check ball mounting structure of the separating plate for the valve body of the automatic transmission according to the present invention.

Referring to the drawings, in the check ball mounting structure of the separating plate for valve body of the automatic transmission according to the present invention, one direction of the first oil passage (61a) to block the oil flow, so that the oil flow in the opposite direction The separator 60 is provided with a seating portion 61 on which the check ball 50 is seated.

At this time, in one embodiment of the check ball mounting structure of the separating plate for the valve body of the automatic transmission according to the invention, the seating portion 61, the check ball 50 is seated while the surface contact with the seating portion 61 The first seating groove 61b is formed to have a predetermined depth.

And the first seating groove (61b) is formed in a round (round) shape so that the check ball 50 is seated in close contact with the seating portion (61).

In addition, as shown in Figure 4a and 4b, in another embodiment of the check ball mounting structure of the separating plate for the valve body of the automatic transmission according to the present invention, the first oil passage (61a) of the seating portion 61 At the same time, the check ball 50 is seated and an elastic member 70 having a second oil passage 71 is installed.

In particular, the elastic member 70, as shown in Figure 4b, is formed in the coupling groove 73 is inserted into the first oil passage (61a) in a predetermined depth on the outer peripheral surface of the central portion to be coupled, rubber ( rubber).                     

However, the material of the elastic member 70 is easy to assemble the elastic member 70 in the first oil passage (61a) of the separating plate 60, if the check ball 50 is seated and operated does not interfere It is not limited to the rubber mentioned above.

In addition, a second seating groove 72 is formed on the upper surface of the elastic member 70 on which the check ball 50 is seated so that the check ball 50 may be seated in surface contact.

The second seating groove 72 is formed in a round shape such that the check ball 50 is seated while being in close contact with the elastic member 70, similar to the first seating groove 61b described above.

Referring to the operation of the check ball mounting structure of the separating plate for the valve body of the automatic transmission according to the present invention having the configuration as described above are as follows.

Referring back to the drawings, the check ball mounting structure of the separating plate for the valve body of the automatic transmission according to the present invention, as shown in Figures 3a and 3b, the seating portion 61 on which the check ball 50 is seated A first seating groove 61b having a round shape is formed on the surface of the separating plate 60.

In addition, according to another embodiment of the present invention, as shown in Figure 4a and 4b, the elastic member formed with a second seating groove 72 so that the check ball 50 can be seated on the separating plate 60 (70) is installed in the first oil passage (61a) of the separating plate (60).

Accordingly, when the check ball 50 is seated on the seating portion 61 of the separating plate 60, the check ball 50 is usually made of steel by changing the existing line contact to be seated in surface contact. Mitigates aggression

Accordingly, the operation of the check ball 50 smoothly prevents unwanted oil flow.

As described above, the check ball mounting structure of the separating plate for valve body of the automatic transmission according to the present invention has the following effects.

As the check ball operates smoothly, there is no malfunction as before. Therefore, the transmission quality of the automatic transmission is improved, system waste is not generated, and durability can be improved.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (7)

In the check ball mounting structure of the separating plate for the valve body of the automatic transmission provided with a seating portion for seating the check ball to allow the oil flow in one direction of the first oil passage, the oil flow in the opposite direction, In the seating portion, The check ball mounting structure of the separating plate for the valve body of the automatic transmission, characterized in that the first seating groove is formed to a predetermined depth so that the check ball is seated while the surface contact the seat. The method of claim 1, The first seating groove is a check ball mounting structure of the separating plate for the valve body of the automatic transmission, characterized in that formed in a round shape so that the check ball is seated in close contact with the seating portion. The method of claim 1, The mounting structure of the check ball mounting plate for the valve body of the automatic transmission, characterized in that the first oil passage is seated in the seating portion and the elastic member having a second oil passage is installed at the same time. The method of claim 3, The elastic member, The check ball mounting structure of the separating plate for the valve body of the automatic transmission, characterized in that the coupling groove is inserted into the first oil passage to be coupled to a predetermined depth on the outer peripheral surface of the central portion. The method of claim 3, The elastic member is a check ball mounting structure of the separating plate for the valve body of the automatic transmission, characterized in that consisting of a rubber. The method of claim 3, And a second seating groove formed on the upper surface of the elastic member on which the check ball is seated so as to be seated while the check ball is in surface contact. The method of claim 6, The second seating groove is a check ball mounting structure of the separating plate for the valve body of the automatic transmission, characterized in that formed in a round shape so that the check ball is seated in close contact with the elastic member.

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