JP6674336B2 - Fixing mechanism for electrical components for railway vehicles - Google Patents

Description

  The present invention relates to a fixing mechanism for a railway vehicle electric component, and is particularly preferable when applied to a fixing mechanism for fixing a unitized railway vehicle electric component to a box housing the railway vehicle electric component. is there.

  2. Description of the Related Art Conventionally, in a railway vehicle, necessary electric components are divided into units for each function, and a plurality of electric component units are mounted in a box fixed to a lower side of a vehicle body. In this case, each unit is inserted into the box through the corresponding opening provided on the side surface of the box, and the front panel, which is slightly larger than the opening of the box provided on the front surface of the unit, is provided. It is fixed to the box by screwing around the opening.

  As described above, in the railway vehicle, each unit of the electric component is housed in a box like a cantilever having only the front panel portion fixed to the box, and the rear end of the unit is a box. Is capable of vibrating vertically and horizontally. For this reason, in a conventional railway vehicle, the vibration mode of the cantilever of each unit is excited by the vibration during the traveling of the vehicle, and the unit may be damaged due to poor electrical contact of the unit or the vibration.

  As one of the methods for solving such a problem, for example, it is conceivable to employ a device fixing mechanism disclosed in Patent Document 1 as a fixing mechanism of a unit of an electric component in a railway vehicle.

JP 2008-4759 A

  However, according to the equipment fixing mechanism disclosed in Patent Literature 1, the earthquake resistance is still insufficient, and even if such an equipment fixing mechanism is adopted as a mechanism for fixing a unit to a box body of a railway vehicle, a single piece of the unit is required. There is a problem that the vibration mode of the beam cannot be sufficiently suppressed.

  The present invention has been made in view of the above points, and sufficiently suppresses a vibration mode of a cantilever of an electric component for a railway vehicle in practical use, and poor electrical contact of the electric component for a railway vehicle due to vibration. It is an object of the present invention to propose a mechanism for fixing electric equipment for railway vehicles, which can effectively prevent damage and damage.

In order to solve such a problem, in the present invention, a railway vehicle electric unit for fixing a unit of a railway vehicle electrical component which is housed in a box disposed on a railway vehicle so as to be inserted from the back side thereof, to the box. In the electrical component fixing mechanism, on the back side of the unit, a guide pin disposed in parallel with the insertion direction of the unit into the box, and a guide pin provided in the box and housed in the box. A guide pin receiver for holding a tip of the guide pin, wherein the unit has a front side facing the back side fixed to the box body, and the guide pin has a male or female first cone at the end. Surface, and the guide pin receiver has a female or male second conical surface of the same shape as the conical surface at the tip of the guide pin, and the second conical surface and the inside of the box The guide pin stored in So as to abut with said first conical surfaces maintains the tip of the guide pin, in a state in which the unit is housed in the box body, through the guide pins and the guide pin receiving from said unit The unit is fixed to an elastic member that is elastically deformed in a direction in which the unit is inserted into the box by a given pressing force, and the elastic member divides the box into a plurality of space regions for inserting the units. It was assumed to be a partition plate.
Further, in the present invention, a railcar electrical component fixing mechanism for fixing a railcar electrical component unit housed in a box disposed on a railroad vehicle so as to be inserted from the rear side to the box. , A guide pin disposed on the back side of the unit in parallel with an insertion direction of the unit into the box, and a tip of the guide pin of the unit provided in the box and housed in the box A guide pin receiver for holding the guide pin, wherein the unit has a front side facing the back side fixed to the box body, the guide pin has a male first conical surface at a tip, and the guide pin The receptacle has a female second conical surface having the same shape as the conical surface at the tip of the guide pin, and the second conical surface and the first conical surface of the guide pin housed in the box body. Abut the conical surface of The guide pin receiver holds the distal end of the guide pin, and the guide pin receiver has a female second conical surface having the same shape as the first conical surface formed on the elastic member fixedly disposed in the box body. And the elastic member is a partition plate that divides the inside of the box into a plurality of space regions into which the units are inserted.

  According to the railway vehicle electrical component fixing mechanism, the vibration mode of the cantilever of the unitized railway vehicle electrical component can be sufficiently suppressed in practical use.

  Advantageous Effects of Invention According to the present invention, it is possible to effectively prevent poor electrical contact and breakage of railway vehicle electrical components due to vibration.

1 is a schematic perspective view showing a partial configuration of a railway vehicle employing a railway vehicle electrical component fixing mechanism according to a first embodiment. (A)-(D) is a side view which shows the structure of the fixing mechanism of the electrical equipment for rail vehicles by 1st Embodiment which takes a partial cross section. (A)-(D) is a side view which shows the structure of the fixing mechanism of the electrical equipment for rail vehicles by 2nd Embodiment by taking a partial cross section. (A) is a front view for explaining a conventionally proposed device fixing mechanism, and (B) is a side view for explaining the device fixing mechanism.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

(1) First Embodiment (1-1) Conventional Device Fixing Mechanism First, the device fixing mechanism disclosed in Patent Document 1 (Japanese Unexamined Patent Application Publication No. 2008-4759) will be described with reference to FIG. I do.

  As shown in FIGS. 4A and 4B, in the device fixing mechanism 1 disclosed in Patent Literature 1, a guide pin 3 is provided on the back surface of a unit 2 of a wireless device, and the unit 2 is stored. A guide pin receiving spring 4 provided with a receiving hole 4A and a curved portion 4B is provided on a box (not shown) side. The guide pin receiving spring 4 is formed from an elastic plate material, and is fixed to a guide member 5 disposed in the box.

  When the unit 2 is inserted into the box, the guide pin 3 enters the receiving hole 4A of the guide pin receiving spring 4, and the guide pin receiving spring 4 is moved in the inserting direction of the unit 2 by the large diameter portion 3A formed in the guide pin 3. The guide pin 3 is pushed and elastically deformed, and the guide pin 3 is pushed in one direction (the direction opposite to the insertion direction of the unit 2) by the guide pin receiving spring 4, so that the guide pin 3 and the guide pin receiving spring 4 play freely. By engaging in a state without a gap, earthquake resistance can be obtained.

  However, according to such a device fixing mechanism 1, although the guide pin 3 engages with the upper part of the receiving hole 4A of the guide pin receiving spring 4 without play as shown in FIG. There is a gap between the guide pin receiving spring 4 and the lower portion of the receiving hole 4A.

  For this reason, when the unit 2 is in a state like a cantilever having only the front side fixed to the box, a guide is required to suppress the vertical vibration mode of the rear end of the unit 2. It is necessary to increase the rigidity of the pin receiving spring 4, but if the rigidity is increased, the guide pin receiving spring 4 will have sufficient elastic deformation when pushed by the large diameter portion 3A of the guide pin 3 in the insertion direction of the unit 2. There is a problem that cannot be obtained.

  That is, when the rigidity of the guide pin receiving spring 4 is increased, there is a problem that a gap is generated between the guide pin 3 and the receiving hole 4A of the guide pin receiving spring 4 to deteriorate the earthquake resistance. On the other hand, when the rigidity of the guide pin receiving spring 4 is reduced, the vibration mode of the cantilever in the vertical and horizontal directions cannot be suppressed.

  Therefore, the electric component fixing mechanism according to the present embodiment solves such a problem, and can sufficiently suppress the vibration mode of the cantilever in the vertical and horizontal directions of the unit of the electric device for a railway vehicle. It was done. Hereinafter, such a railway vehicle electrical component fixing mechanism of the present embodiment will be described.

(1-2) Mechanism for Fixing Electric Components for Railway Vehicle According to the Present Embodiment In FIG. 1, reference numeral 20 denotes electric devices for a railway vehicle that are unitized as a whole according to the present embodiment (hereinafter referred to as electric components for a railway vehicle) ) Is shown. This fixing mechanism 20 is parallel to the longitudinal direction (the front direction indicated by an arrow x in FIG. 1 and the rear direction opposite to the front direction, hereinafter referred to as the front-rear direction) of the railway vehicle under the floor of the railway vehicle (not shown). This is a mechanism for fixing the electric vehicle unit 22 housed in the box 21 disposed in the box 21 to the box 21.

  The unit 22 is formed in a rectangular parallelepiped shape as a whole, and is provided with a front panel 22A formed on the front part thereof to be one size larger than other parts. Further, through holes 22B are formed at four corners of the front panel 22A.

  The box body 21 is formed in a rectangular parallelepiped shape having a size capable of accommodating a plurality of units 22, and the inside thereof is provided with a central partition plate 30 provided in parallel with the front-rear direction and the central partition plate 30. The plurality of partition plates 31 provided vertically partition the unit 22 into a plurality of space regions 21A for accommodating the units 22. In this case, the center partition plate 30 is formed using a flexible material such as metal or wood.

  On the left and right side surfaces of the box 21, the height of the unit 22 housed in the space area 21A (the upward direction indicated by an arrow z in FIG. A rectangular opening 21B having a height and a width slightly larger than a length in the downward direction and a width (the length in the front-rear direction in FIG. 1) is provided. This allows the corresponding unit 22 to be inserted into the corresponding space area 21A of the box 21 via the opening 21B and stored.

  In each space area 21A of the box 21, a pair of L-shaped guide rails 32A and 32B for guiding the insertion direction of the unit 22 into the space area 21A are provided. It is fixed on the bottom surface 21 </ b> C of the box 21 in parallel with the insertion direction (the right direction indicated by the arrow y in FIG. 1 or the left direction opposite thereto) and at a distance substantially equal to the width of the unit 22.

  Furthermore, a total of four screw holes 21D are provided around each opening 21B provided on each of the left and right sides of the box body 21 so as to correspond to each through hole 22B provided on the front panel 22A of the corresponding unit 22. After the unit 22 is inserted into the box 21 through the corresponding opening 21B of the box 21, the unit fixing screws 33 are respectively inserted through the through holes 22B of the unit 22. By screwing into the corresponding screw hole 21D, only the front side of the unit 22 can be stored in the box 21 in a state like a cantilever fixed to the box 21. .

  In addition to this configuration, in the case of the present embodiment, two guide pins 34 are welded or splashed on the back surface of each unit 22 facing the front panel 22A in parallel with the direction in which the unit 22 is inserted into the box 21. Alternatively, it is fixed at a predetermined position using a ring washer. Also, in each space area 21A of the box 21, two guide pin receivers 35 are respectively welded to the central partition plate 30 at positions facing the respective guide pins 34 in correspondence with the respective guide pins 34 of the unit 22. It is fixed using a spring or a ring washer.

  In this case, as shown in FIG. 2A, each guide pin 34 has a structure in which a conical tip portion 34B is integrally formed at the tip of a cylindrical root portion 34A. 35 has a structure in which a conical concave portion 35A having the same shape as the tip shape of the tip portion 34B of the guide pin 34 is formed in the center of the tip end surface of each cylinder.

  Thereby, as shown in FIG. 2C, when the unit 22 is stored (inserted) in the corresponding space area 21A of the box 21, the center axis K1 of the guide pin 34 of the unit 22 is shifted toward the box 21. The tip of the tip portion 34B of the guide pin 34 fits into the concave portion 35A of the guide pin receiver 35 in a state in which the center axis K2 of the corresponding guide pin receiver 35 matches the center axis K2.

  Further, for example, as shown in FIG. 2B, the center axis K1 of the guide pin 34 of the unit 22 is shifted from the center axis K2 of the corresponding guide pin receiver 35 on the box 21 side (in FIG. 2B, Even if the center axis K1 of the guide pin 34 of the unit 22 is shifted from the center axis K2 of the guide pin receiver 35 by a distance dx '), the tip of the tip portion 34B of the guide pin 34 When fitting into the concave portion 35A, the peripheral surface of the distal end of the distal end portion 34B of the guide pin 34 slides on the inner peripheral surface of the concave portion 35A of the corresponding guide pin receiver 35, so that the position of the guide pin 34 is corrected. Finally, as shown in FIG. 2C, the tip of the tip portion 34B of the guide pin 34 fits into the recess 35A of the guide pin receiver 35 in a state where the two central axes K1 and K2 coincide.

  The tip of the tip portion 34B of the guide pin 34 fits into the recess 35A of the guide pin receiver 35 in such a state that the center axes K1 and K2 of the guide pin 34 and the guide pin receiver 35 coincide with each other. The entire peripheral surface (a male conical surface, hereinafter referred to as a male conical surface) of the distal end of the distal end portion 34B of the guide pin 34 fitted into the concave portion 35A of the guide pin receiver 35 is formed by the concave portion 35A of the guide pin receiver 35. The guide pins 34 (hence the unit 22) are vertically and horizontally moved by the guide pin receiver 35 so as to abut against the inner peripheral surface (a female conical surface, hereinafter referred to as a female conical surface) without play. Can be held so as not to vibrate.

  Further, in the case of the present embodiment, the shape and size of the guide pin 34 and the guide pin receiver 35 and the depth of the space area 21A in the box 21 are, as shown in FIG. When the entire length L1 of the guide pin 34 and the guide pin receiver 35 in a state where the tip of the guide pin 34B is completely fitted in the recess 35A of the guide pin receiver 35 is the case where the guide pin 34 and the guide pin receiver 35 are not provided. The distance from the rear surface of the unit 22 in which the front panel 22A is screwed to the box 21 to the surface of the central partition plate 30 opposed thereto is slightly larger (dy in FIG. 2C). Selected.

  Thus, in a state where the unit 22 is inserted into the corresponding space area 21A of the box 21 and the front panel 22A of the unit 22 is screwed to the box 21 (that is, the unit 22 is stored in the box 21), The unit 22 presses the center partition plate 30 in the insertion direction of the unit 22 via the guide pin 34 and the guide pin receiver 35, and the pressing force can elastically deform the center partition plate 30.

  Then, by elastically deforming the center partition plate 30 in this manner, the center partition plate 30 pushes the guide pin receiver 35 in the direction opposite to the insertion direction of the unit 22 by the elastic force, and the male conical surface of the guide pin 34 is formed. By bringing the female conical surface of the guide pin receiver 35 into pressure contact with the guide pin receiver 35, the guide pin 34 and the guide pin receiver 35 can be engaged in a state with less play.

  Also, by elastically deforming the center partition plate 30 in this manner, the unit 22 can be pushed out of the box 21 in the direction opposite to the insertion direction only by removing the unit fixing screw 33 (FIG. 1). As a result, not only is it easy to remove the unit 22 from the box 21, but also when the unit 22 is stored in the box 21, the center partition plate 30 moves the guide pin receiver 35 in the direction opposite to the insertion direction of the unit 22. A pressing force is applied to the unit fixing screw 33 in the same direction as when a spring washer is used to apply an urging force in the same direction, and the loosening of the unit fixing screw 33 due to vibration can be suppressed.

(1-3) Effects of the present embodiment As described above, in the present embodiment, the guide pin 34 having the male conical surface at the distal end portion 34B is arranged on the back surface of the unit 22 and corresponds to the guide pin 34. Then, the guide pin receiver 35 provided with the concave portion 35A having the female conical surface having the same shape as the male conical surface of the guide pin 34 is arranged on the central partition plate 30 in the box 21. The female conical surface of the guide pin receiver 35 and the male conical surface of the guide pin 34 are brought into contact with no play, and the guide pin receiver 35 vibrates the guide pin 34 (hence, the unit 22) in the vertical and horizontal directions. It can be held so that it cannot be done.

  Therefore, according to the electric vehicle fixing mechanism of the present embodiment, the vibration mode of the cantilever of the unit 22 in which the front panel 22A is fixed to the box 21 can be sufficiently suppressed in practical use, In this way, it is possible to effectively prevent poor electrical contact and breakage of the unit 22 due to vibration.

(2) Second Embodiment FIG. 3 (A) shows a configuration of a mechanism for fixing electric components for a railway vehicle according to a second embodiment. In the fixing mechanism of the present embodiment, the guide pin receiver 35 (FIG. 1) as a component is not provided in each space area 21A (FIG. 1) of the box 21 (FIG. 1). The point that the guide pin receiver 40A is formed by drilling is greatly different from the fixing mechanism 1 of the first embodiment.

  Actually, the guide pin receiver 40A of the present embodiment is provided at the predetermined position of the center partition plate 40, which faces each of the guide pins 34 of the unit 22 housed in the box 21, respectively. Is formed by forming a hole having a female conical surface having the same shape as the tip of the burring process. For this reason, in the present embodiment, the center partition plate 40 is formed using a material that can be subjected to a burring process, for example, an iron material, an aluminum material, or a stainless steel material.

  Thereby, as shown in FIG. 3C, when the unit 22 is stored (inserted) in the corresponding space area 21A of the box 21, the center axis K1 of the guide pin 34 of the unit 22 is shifted to the side of the box 21. The distal end of the distal end portion 34B of the guide pin 34 fits into the guide pin receiver 40A so as to coincide with the central axis K3 of the corresponding guide pin receiver 40A.

  Also, for example, as shown in FIG. 3B, the center axis K1 of the guide pin 34 of the unit 22 is shifted from the center axis K3 of the corresponding guide pin receiver 40A on the box body 21 side (in FIG. 3B, Even if the center axis K1 of the guide pin 34 of the unit 22 is displaced from the center axis K3 of the guide pin receiver 40A by the distance dx '), the tip end of the tip portion 34B of the guide pin 34 is in the guide pin receiver 40A. At the time of fitting, since the peripheral surface of the distal end of the distal end portion 34B of the guide pin 34 slides on the inner peripheral surface of the corresponding guide pin receiver 40A, the position of the guide pin 34 is corrected. As shown in (C), the distal end of the distal end portion 34B of the guide pin 34 is fitted into the guide pin receiver 40A in a state where the center axes K1 and K3 coincide with each other.

  The distal end of the distal end portion 34B of the guide pin 34 fits into the guide pin receiver 40A in a state where the center axes K1 and K3 of the guide pin 34 and the guide pin receiver 40A coincide with each other. Since the entire peripheral surface (male-shaped conical surface) of the distal end portion 34B of the inserted guide pin 34 contacts the inner peripheral surface (female-shaped conical surface) of the guide pin receiver 40A without play, the guide is carried out by the guide pin receiver 40A. The pin 34 (and thus the unit 22) can be held so as not to vibrate vertically or horizontally.

  In the case of the present embodiment, the shape and size of the guide pin 34 and the guide pin receiver 40A and the depth of the space area 21A in the box 21 are, as shown in FIG. When the distance L2 from the root of the guide pin 34 to the center partition plate 40 when the tip of the guide pin 34B is completely fitted in the guide pin receiver 40A is assumed to be without the guide pin 34, the front panel 22A is placed in the box 21. Is selected to be slightly larger (dy 'in FIG. 3C) than the distance from the rear surface of the unit 22 screwed to the center partition plate 30.

  Thus, in a state where the unit 22 is inserted into the corresponding space area 21A of the box 21 and the front panel 22A of the unit 22 is screwed to the box 21 (that is, the unit 22 is stored in the box 21), The unit 22 presses the center partition plate 40 in the insertion direction of the unit 22 via the guide pin 34 and the guide pin receiver 40A, and the pressing force allows the center partition plate 40 to be elastically deformed.

  By elastically deforming the center partition plate 40 in this manner, the center partition plate 40 pushes the guide pin 34 in the direction opposite to the direction in which the unit 22 is inserted by the elastic force of the center partition plate 40. The surface and the female conical surface of the guide pin receiver 40A can be pressed into contact with each other, whereby the guide pin 34 and the guide pin receiver 40A can be engaged in a state with less play.

  In addition, by selecting the shape and size of the guide pin 34 and the guide pin receiver 40A in this way, the unit 22 can be removed from the box 21 in the direction opposite to the insertion direction simply by removing the unit fixing screw 33 (FIG. 1). Since it is pushed out, as in the first embodiment, not only the removal of the unit 22 from the box body 21 is facilitated, but also the loosening of the unit fixing screw 33 due to vibration is suppressed. it can.

  As described above, in the present embodiment, the guide pin 34 having the male conical surface at the distal end portion 34B is arranged on the back surface of the unit 22, and the male pin of the guide pin 34 is associated with the guide pin 34. By forming the hole-shaped guide pin receiver 40A having a female conical surface having the same shape as the surface on the center partition plate 40, the front panel 22A is attached to the box 21 similarly to the first embodiment. The vibration mode of the cantilever of the fixed unit 22 can be sufficiently suppressed in practical use, and thus poor electrical contact and damage of the unit 22 due to vibration can be effectively prevented.

  Further, according to the present embodiment, the number of components of the entire fixing mechanism can be reduced because the guide pin receiver 35 (FIG. 1) of the first embodiment is not required, and the entire fixing mechanism can be reduced. The thickness in the left-right direction in FIG. 1 can be reduced, and accordingly, the thickness of the box 21 in the width direction (left-right direction in FIG. 1) can be reduced, or conversely, the insertion direction of the unit 22 into the box 21 ( The length in the left-right direction in FIG. 1) can be increased.

(3) Other Embodiments In the first embodiment described above, a male conical surface is formed at the tip of the guide pin 34, and a female conical surface of the same shape is formed on the guide pin receiver 35. However, the present invention is not limited to this. A female cone is formed at the tip of the guide pin 34, and a male cone having the same shape is formed on the guide pin receiver 35. May be formed.

  In the first and second embodiments, the case where the guide pin receiver 35 is fixed to the center partition plate 30 or the guide pin receiver 40A is formed on the center partition plate 40 has been described. The present invention is not limited to this, and these guide pin receivers 35, 40A may be fixed or formed on some elastic member provided in the box body 21 separately from the center partition plates 30, 40.

  The present invention can be applied to railway vehicles.

  Reference numeral 20: a mechanism for fixing electric components for railway vehicles, 21: a box body, 21A: a space area, 21B: an opening, 21D: a screw hole, 22: a unit, 22A: a front panel, 22B ... Through-hole, 30, 40 Central partition plate 31, Partition plate 32A, 32B Guide rail 33, Unit fixing screw 34 Guide pin 34B Tip, 35 40A ... guide pin receiver, 35A ... recess.

Claims (2)

In a railway vehicle electrical component fixing mechanism for fixing a unit of a railway vehicle electrical component stored as inserted from the back side to the box body disposed in the railway vehicle,
On the back side of the unit, a guide pin arranged in parallel to the insertion direction of the unit into the box,
A guide pin receiver that is provided in the box body and holds a tip of the guide pin of the unit housed in the box body;
In the unit, a front side facing the rear side is fixed to the box body,
The guide pin has a male or female first conical surface at its tip,
The guide pin receiver,
A female or male second conical surface having the same shape as the conical surface at the tip of the guide pin; and the second conical surface and the first of the guide pins housed in the box body. The tip of the guide pin is held so as to abut against the conical surface of the unit, and in a state where the unit is housed in the box, a push provided from the unit via the guide pin and the guide pin receiver is provided. Fixed to an elastic member elastically deformed in the direction of insertion of the unit into the box by pressure,
The elastic member,
A fixing mechanism for a railway vehicle electrical component, wherein the box body is a partition plate for partitioning the box into a plurality of space regions into which the units are inserted . In a railway vehicle electrical component fixing mechanism for fixing a unit of a railway vehicle electrical component stored as inserted from the back side to the box body disposed in the railway vehicle,
On the back side of the unit, a guide pin arranged in parallel to the insertion direction of the unit into the box,
A guide pin receiver provided in the box body and holding a tip of the guide pin of the unit housed in the box body;
With
In the unit, a front side facing the rear side is fixed to the box body,
The guide pin has a male first conical surface at the tip,
The guide pin receiver,
A female second conical surface having the same shape as the conical surface at the tip of the guide pin; and the second conical surface and the first conical surface of the guide pin housed in the box body And hold the tip of the guide pin so that
The guide pin receiver is a hole having the female second conical surface having the same shape as the first conical surface formed on the elastic member fixedly arranged in the box body,
The elastic member,
Said box body, railway vehicle electric equipment fixing mechanism you being a partition plate for dividing into a plurality of spatial regions for respectively inserting the unit.

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