JPH0683446U - Mounting structure for electromagnetic actuator - Google Patents

Abstract

(57) [Abstract] [Purpose] To prevent the electromagnetic actuator from rattling with a simple structure and to improve the assemblability of the electromagnetic actuator to the plate body. [Structure] First engaging means 4 protruding outward on a side surface of an outer case 44 covering an outer peripheral portion of an electromagnetic actuator 41.
5, and elastically deformable side walls 29 and 30 are formed in the recess 26 of the plate body 25. Side wall portions 29, 30
Second engaging means 31, 32 are formed which engage with the first engaging means 45 of the outer case 44 when the outer case 44 is pushed into the recess 26 by a predetermined amount. Plate body 2
An elastic piece 35 for urging the outer case 44 in a direction opposite to the pushing direction is formed on the bottom wall portion of the recess 26 of FIG.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mounting structure for an electromagnetic actuator that uses the attractive force of an electromagnet.

[0002]

[Prior art]

 A vehicle equipped with an automatic transmission (hereinafter referred to as an AT vehicle) is equipped with a technique for preventing erroneous operation. A shift lock mechanism is known as one of the techniques. The shift lock mechanism prevents the shift operation from the P (parking) position unless the brake pedal is pressed when starting, which prevents the brake pedal and accelerator pedal from being pressed differently. This shift lock mechanism is provided with an electromagnetic actuator that operates by an electric signal, and the shift lock is released when the solenoid of the electromagnetic actuator is excited. As a prior art related to this, Japanese Utility Model Laid-Open No. 64-55128 is known.

6 to 8 show an example of a conventional shift lock releasing device. In the figure, 1 denotes a shift lever, and 3 denotes a detinting pin movably attached to the shift lever 1. The detinting pin 3 is adapted to interlock with the movement of the push button 9 located on the top of the shift lever 1. The detinting pin 3 is engageable with each positioning portion of the detinting plate 4. As shown in FIG. 5, a shift lock plate 5 is arranged near the detinting plate 4. The shift lock plate 5 is held on the detail plate 4 so as to be vertically movable. When the shift lever 1 is in the stop position (parking position), the detinto pin 3 engages with the shift lock plate 5.

A swingable lock lever 6 is arranged near the shift lock plate 5. The upper end surface 6a of the lock lever 6 can come into contact with the locking end surface 5a of the shift lock plate 5. An electromagnetic actuator 7 is connected to the lock lever 6. When the solenoid of the electromagnetic actuator 7 is not excited, the lock lever 6 swings toward the shift lock plate 5 side by the spring force of the compression spring 8.

In the shift lock releasing device configured as described above, when the brake pedal is depressed while the shift lever 1 is located at the stop position when the vehicle starts, the solenoid of the electromagnetic actuator 7 is excited and the electromagnetic actuator is activated. The suction force of 7 causes the lock lever 6 to swing in a direction away from the shift lock plate 5. Therefore, the movement of the shift lock plate 5 is not restrained by the lock lever 6. Therefore, the detint pin 3 engaging with the shift lock plate 5 can be pushed down, and the shift lever 1 can be moved to another position.

As shown in FIG. 8, the electromagnetic actuator 7 has an outer peripheral portion covered with an outer case 11 made of iron. The electromagnetic actuator 7 covered by the outer case 11 is housed in the recess 13 of the plate body 12. A positioning boss 11 a is formed on the side surface of the outer case 11. The boss 11a is adapted to fit with a positioning hole 12b formed in the side wall portion 12a of the plate body 12. The electromagnetic actuator 7 is attached to the plate body 12 side by two machine screws 13.

A mounting hole 12c into which the machine screw 13 is inserted is formed in the side wall portion 12a of the plate body 12. A screw hole 11 b into which the machine screw 13 is screwed is formed in the outer case 11. A collar 14 for preventing loosening is attached to the machine screw 13. In the electromagnetic actuator 7, with the boss 11a of the outer case 11 fitted into the positioning hole 12b of the plate body 12, the machine screw 13 inserted into the mounting hole 12c is screwed into the screw hole 11b of the outer case 11. To be installed in the specified position.

[0008]

[Problems to be solved by the device]

 However, the electromagnetic actuator mounting structure shown in FIGS. 6 to 8 has some problems.

(1) The machine screw 13 must be tightened while the boss portion 11a of the outer case 11 is fitted in the positioning hole 12b of the plate body 12, and the assembling property is poor.

(2) Since the attraction force of the electromagnetic actuator 7 is about 500 g, the tightening with the two machine screws 13 is excessive in quality with respect to the reaction force caused by the attraction force. Therefore, an assembly with a simpler structure is desired.

(3) The electromagnetic actuator 7 is tightened with a small screw 13 to prevent it from rattling, but a collar 14 is used to prevent the small screw 13 from loosening due to vehicle vibration. Therefore, the number of parts is increased.

The present invention focuses on the above-mentioned problems, and can prevent the rattling of the electromagnetic actuator with a simple structure and can significantly improve the assembling property of the electromagnetic actuator to the plate body. It is intended to provide a mounting structure for an actuator.

[0013]

[Means for Solving the Problems]

 To achieve this object, an electromagnetic actuator mounting structure according to the present invention includes an electromagnetic actuator that uses an attractive force of an electromagnet, an outer case that covers an outer peripheral portion of the electromagnetic actuator, and a recess that houses the outer case. A plate body; a side wall portion formed on the plate body; the side wall portion being elastically deformed outward by contact with the outer case when the outer case is pushed into the recess; and a first engagement formed on a side surface of the outer case. Means, second engaging means formed on a side wall portion of the plate body, and engaging with the first engaging means of the outer case when the outer case is pushed into the recess by a predetermined amount; An elastic piece formed on the bottom wall of the concave portion of the main body for urging the outer case in a direction opposite to the pushing direction.

[0014]

[Action]

 In the mounting structure of the electromagnetic actuator configured as above, when the outer case covering the outer peripheral portion of the electromagnetic actuator is pushed into the recess of the plate body, the side wall portion of the plate body is elastically deformed due to contact with the outer case. . Further, when the outer case is pushed in the housing direction, the first engaging means of the outer case and the second engaging means of the plate body are engaged with each other. In this state, the side wall portion of the plate body that has been elastically deformed returns to the original state, so that the engagement is not easily disengaged.

As described above, the electromagnetic actuator can be attached only by pushing the outer case into the recess of the plate body, and the assembling property can be improved as compared with the conventional structure using machine screws.

When the first engaging means and the second engaging means are engaged, the outer case is attached in a direction opposite to the pushing direction by the elastic piece formed on the bottom wall of the recess of the plate body. Since it is urged, the first engaging means and the second engaging means can always be brought into close contact with each other. Therefore, it is possible to eliminate the play of the electromagnetic actuator.

[0017]

【Example】

 A preferred embodiment of a mounting structure of an electromagnetic actuator according to the present invention will be described below with reference to the drawings. 1 to 3 show an embodiment of the present invention, particularly when applied to a shift lock releasing device of a shift lever of an automobile.

In FIG. 1, reference numeral 21 denotes a shift lock plate. A lock lever 22 is provided immediately below the shift lock plate 21. The lock lever 22 is swingable around a support shaft 23 fixed to the plate body 25, and an upper end surface 22a thereof can be brought into contact with a lock end surface 21a of the shift lock plate 21. An electromagnetic actuator 41 is connected to the lock lever 22.

The electromagnetic actuator 41 has a solenoid main body 41a in which a coil is wound around an iron core, and a plunger 41b capable of moving forward and backward with respect to the solenoid main body 41a. A compression coil spring 42 for urging the plunger 41b outward is arranged on the outer periphery of the plunger 41b. When the solenoid body 41a is excited, the plunger 41b is attracted to the solenoid body 41a side, and the lock lever 22 swings away from the shift lock plate 21.

A resin connecting member 43 is attached to the plunger 41 a of the electromagnetic actuator 41. The pin portion 22b of the lock lever 22 is inserted into the connecting hole 43a of the connecting member 43. The outer periphery of the solenoid body 41a is covered with a box-shaped outer case 44. The outer case 44 is made of synthetic resin in this embodiment, but may be made of metal, for example.

The solenoid body 41 a of the electromagnetic actuator 41 covered with the outer case 44 is housed in the recess 26 of the plate body 25. The plate body 25 is made of synthetic resin. On each side surface of the outer case 44, an engaging protrusion 45 as a first engaging means that protrudes outward is formed. The engaging protrusion 45 has a trapezoidal cross section, and one side thereof functions as an engaging surface 45a and the other side thereof functions as a guiding inclined surface 45b.

A plurality of positioning bosses 46 projecting downward are formed on the bottom surface of the outer case 44. The positioning boss 46 can be fitted into a positioning hole 28 formed in the bottom wall portion 27 of the recess 26 of the plate body 25. Side walls 29 and 30 are formed in the recess 26 of the plate body 25. When the outer case 44 is stored in the recess 26, the side walls 29 and 30 come into contact with the engaging protrusions 45 of the outer case 44 and elastically deform outward.

An engagement hole as a second engagement means that engages with the engagement protrusion 45 of the outer case 44 when the outer case 44 is pushed into the recess 26 by a predetermined amount in the side walls 29 and 30. 31 and 32 are formed. Guide grooves 33, 34 are formed on the inner surfaces of the side walls 29, 30 to guide the engaging protrusions 45 to the engaging holes 31, 32 when the outer case 44 is pushed into the recess 26. As shown in FIG. 1, the widths of the guide grooves 33 and 34 are maximum at the upper ends of the side wall portions 29 and 30, and become narrower as they approach the engagement holes 31 and 32.

The bottom wall 27 of the recess 26 of the plate body 25 is provided with an elastic piece 35 for urging the outer case 44 housed in the recess 26 in the direction opposite to the pushing direction. The elastic piece 35 is integrally formed with the bottom wall portion 27 made of synthetic resin. The elastic piece 35 is formed by cutting and raising a part of the bottom wall portion 27, and one of them is a free end. The elastic piece 35 is formed in an arc shape, and the upper surface thereof protrudes from the upper surface of the bottom wall portion 27.

Next, the operation of this embodiment will be described. Vehicles equipped with an automatic transmission employ erroneous operation prevention technology, and the shift operation cannot be performed from the P position (parking position) without pressing the brake pedal when starting. If the brake pedal is not depressed, the vehicle start condition is not satisfied and the solenoid body 41a of the electromagnetic actuator 41 is not excited. Therefore, in this case, the shift lock plate 21 cannot be pushed down due to the presence of the lock lever 22, and the shift operation cannot be performed.

The electromagnetic actuator 41 is attached to the plate body 25 as follows. The electromagnetic actuator 41 covered by the outer case 44 is first moved by the operator directly above the recess 26 of the plate body 25. When the outer case 44 is roughly positioned with respect to the recess 26, the outer case 44 is pushed toward the recess 26.

Since the outer case 44 is formed with the engagement protrusion 45, the side walls 29 and 30 come into contact with the engagement protrusion 45 when the outer case 44 is pushed into the recess 26. Elastically deforms outward. When the outer case 44 is pushed into the recess 26 by a predetermined amount, the engaging protrusion 45 enters into the engaging holes 31 and 32 formed in the side walls 29 and 30, respectively, and the engaging protrusion 45 and the engaging hole 31. , 32 is engaged.

When the engagement between the engagement protrusions 45 and the engagement holes 31 and 32 is completed, the side wall portions 29 and 30 return to their original shape by self-elasticity. Therefore, the outer case 44 cannot move in the direction opposite to the pushing direction due to the engagement with the engagement holes 31 and 32.

When the outer case 44 is pushed into the recess 26, the engaging protrusion 45 is guided by the guide grooves 33 and 34 of the side wall portions 29 and 30, so that the recess of the outer case 44 at the start of assembly is determined. Even if the positioning with respect to 26 is rough, the outer case 44 can be accurately assembled in the recess 26 of the plate body 25. Therefore, the positioning boss 46 formed on the bottom surface of the outer case 44 can be easily fitted into the positioning hole 28 of the plate body 25.

In a state where the outer case 44 is completely housed in the recess 26, the outer case 44 is urged by the elastic piece 35 in the direction opposite to the pushing direction, so that the engaging surface 45 a of the engaging protrusion 45 is engaged. The inner peripheral surfaces of the dowel holes 31 and 32 can be always brought into close contact. Therefore, it is possible to prevent rattling of the plate body 25 of the electromagnetic actuator 41 due to vibration of the vehicle.

In the present embodiment, the first engaging means is the engaging protrusion 45 and the second engaging means is the engaging hole 31, but as shown in FIG. 4, the first engaging means is formed. The same effect can be obtained by using the engaging hole 51 as the engaging hole 51 and the second engaging means as the engaging protrusion 52. Further, as shown in FIG. 5, it is possible to engage both the first engaging means and the second engaging means as the engaging protrusions 45, 52, and in this case also, the same effect as described above is obtained. Is obtained.

[0032]

[Effect of device]

 According to the present invention, the following effects can be obtained.

(1) An outwardly projecting engaging protrusion is formed on the side surface of the outer case that covers the outer periphery of the electromagnetic actuator, and an elastically deformable side wall is formed in the recess of the plate body. Since the second engaging means that engages with the first engaging means of the outer case when the outer case is pushed into the recess by a predetermined amount is formed in the recess, the electromagnetic actuator can be operated by merely pushing the outer case into the recess. Can be installed. Therefore, as compared with the conventional structure using screws, the assemblability of the electromagnetic actuator can be greatly improved, and the structure can be simplified by the amount of screws and the like being unnecessary.

(2) Since the elastic piece for urging the outer case in the direction opposite to the pushing direction is formed on the bottom wall of the recess of the plate body, the first engaging means and the second engaging means are provided. The engagement means can always be brought into close contact. Therefore, it is possible to prevent rattling of the electromagnetic actuator with respect to the plate body, and it is possible to prevent generation of abnormal noise due to rattling.

[Brief description of drawings]

FIG. 1 is a front view showing a mounting structure of an electromagnetic actuator according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

3 is a cross-sectional view taken along the line BB of FIG.

FIG. 4 is a cross-sectional view showing a modified example of FIG.

FIG. 5 is a cross-sectional view showing another modified example of FIG.

FIG. 6 is a sectional view of a conventional shift lever device for an automatic transmission.

FIG. 7 is a front view of a shift lock release device in a shift lever device of a conventional automatic transmission.

8 is a cross-sectional view taken along the line CC of FIG.

[Explanation of symbols]

 25 Plate Main Body 26 Recess 29 Side Wall 30 Side Wall 31 Second Engaging Means 32 Second Engaging Means 33 Guide Groove 34 Guide Groove 35 Elastic Piece 41 Electromagnetic Actuator 44 Outer Case 45 First Engaging Means 51 First Engaging means 52 Second engaging means

Claims (1)

[Scope of utility model registration request] 1. An electromagnetic actuator that uses an attractive force of an electromagnet, an outer case that covers an outer peripheral portion of the electromagnetic actuator, a plate body having a recess for housing the outer case, and a outer body formed on the plate body. A side wall portion that is elastically deformed outward by contact with the outer case when the case is pushed into the recess; first engaging means formed on a side surface of the outer case; and a side wall portion of the plate body, When the outer case is pushed into the recess by a predetermined amount, the first outer case
Second engaging means that engages with the engaging means of (1), and an elastic piece that is formed on the bottom wall portion of the recess of the plate body and that biases the outer case in a direction opposite to the pushing direction. A mounting structure for an electromagnetic actuator.