JP2012017816A - Back plate mounting flange of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a back plate mounting flange of a vehicle which can accurately apply a sealant to a mating face for mounting a back plate with excellent productivity.SOLUTION: The back plate mounting flange 2 of the vehicle is a member mounted on both right and left ends of an axle arranged along the vehicle width direction. The back plate mounting flange 2 of the vehicle is mounted with the back plate of a drum brak, and the sealant 4 is applied to the mating face for mounting the back plate. A recessed part 12 for indicting a position of a through-hole formed in the back plate is formed on the mating face for mounting the back plate of the back plate mounting flange 2. The recessed part 12 is also formed simultaneously with forging, and the depth of the recessed part 12 is formed in the size of not removing the recessed part 12 by cutting work of the mating face for mounting the back plate.

Description

  The present invention relates to a back plate mounting flange of a vehicle that is mounted on both left and right ends of an axle arranged along the vehicle width direction.

  A four-wheeled vehicle has axles arranged along the vehicle width direction, and back plate mounting flanges are respectively attached to the left and right ends of the axles. A drum brake is attached to each back plate mounting flange on the inner side of the vehicle ( A back plate (dust cover) to which a brake mechanism such as a brake shoe of a drum brake is attached is attached while being covered from the center side of the vehicle.

  By the way, if the wheel is completely locked in a stopped state by sudden braking in the vehicle, the braking action and the steering action are remarkably lowered. Therefore, an anti-lock brake device (hereinafter referred to as “ABS device”) for preventing this is provided. May be provided. This ABS device includes a wheel speed sensor that detects the rotational speed of a wheel, and a controller that controls the hydraulic pressure supplied to the brake in accordance with the wheel speed detected by the wheel speed sensor during braking. A function of slightly releasing the brake immediately before the lock is performed to prevent a decrease in the braking action and the steering action is achieved.

  The wheel speed sensor provided in such an ABS device magnetically detects the rotation of a sensor ring that is coaxially attached to an axle shaft (driving wheel) or an axle hub (driven wheel). The sensor part at the tip of the sensor is attached to the sensor plate through a hole formed in the back plate mounting flange and the back plate attached thereto.

  By the way, although the specification with and without the ABS device may be set for the vehicle, the back plate has a through hole for the sensor part of the wheel speed sensor to be used for the common use of the parts. It is formed no matter what. On the other hand, the back plate mounting flange can be selectively used depending on the specification. That is, a through-hole is formed in the back plate mounting flange of a vehicle equipped with an ABS device, and no through-hole is formed in a back plate mounting flange of a vehicle equipped with no ABS device.

  On the other hand, the back plate mounting flange is generally a forged product, and the mating surface to which the back plate is mounted is subjected to rough cutting. If there is a gap between them, the problem of dust and water entering through the gap occurs.

  Therefore, a sealing agent is applied to the mating surface of the back plate mounting flange and the back plate to seal the gap (for example, see Patent Document 1).

Utility Model Registration No. 2557842

  By the way, the sealing agent is usually applied to the mating surface of the back plate mounting flange. As described above, the back plate mounting flange may or may not have a through hole depending on the vehicle specifications. Through holes are formed in the plate regardless of the specifications for standardization of parts, so when applying a sealant to an axle hub that does not have a through hole, the through hole of the mating back plate Since the position is unknown, it is difficult to accurately apply the sealant in accordance with the peripheral position of the through hole.

  If the sealant is not accurately applied to the mating surface of the backplate mounting flange at the peripheral position of the through-hole of the backplate, the position where the sealant is applied when the backplate is attached to the backplate mounting flange Since it becomes the position of the through hole and a sealing failure occurs, care must be taken in applying the sealing agent, which has been a cause of poor productivity.

  The present invention has been made in view of the above problems, and a purpose of the invention is to provide a back plate mounting flange for a vehicle that can accurately apply a sealant to a mating surface to which the back plate is mounted with high productivity. It is to provide.

  In order to achieve the above object, the invention described in claim 1 is a member attached to the left and right ends of an axle arranged along the vehicle width direction, to which a back plate of a drum brake is attached, and the back plate is attached. In a back plate mounting flange of a vehicle in which a sealing agent is applied to the mating surface, a concave portion indicating the position of a through hole formed in the back plate is formed on the mating surface to which the back plate is mounted.

  The invention according to claim 2 is the invention according to claim 1, wherein the recess is formed simultaneously with forging, and the depth of the recess is set such that the recess is not removed by cutting of the mating surface to which the back plate is attached. It is characterized by that.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the concave portion is formed at a position visible from the through hole of the back plate in a state where the back plate is attached.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, a sealing agent is applied to the outside of the concave portion of the mating surface to which the back plate is attached.

  According to the first aspect of the present invention, even if the back plate mounting flange is not formed with a through hole, the sealing agent is applied to the periphery of the through hole of the mating back plate using the recess formed on the mating surface as a mark. In addition, it can be applied accurately and with good productivity, and when the back plate is attached to the back plate mounting flange, the application position of the sealing agent does not become the position of the through hole of the back plate, causing problems such as poor sealing. Is prevented from occurring.

  According to the second aspect of the present invention, since the concave portion is formed simultaneously with the forging, the productivity is improved. In addition, since the depth of the concave portion is set to a size (depth) that remains without being completely removed by cutting the mating surface of the axle hub, the concave portion does not disappear by cutting, and this concave portion is used as a mark. The sealing agent can be accurately applied to the mating surface of the back plate mounting flange with high productivity.

According to the third aspect of the present invention, since the concave portion is formed at a position visible from the through hole of the back plate in a state where the back plate is mounted on the back plate mounting flange, the back plate mounting flange on which the through hole is formed is provided. Thus, the recess is cut out by processing the through hole, and this recess does not impair the sealing performance between the back plate mounting flange and the back plate. In addition, since the application of the sealant to the mating surface of the back plate mounting flange with the specification of the through hole is accurately performed with high productivity along the periphery of the through hole, there is a problem even if the recess is cut out by the through hole. There is no.

  According to the invention of claim 4, since the sealing agent is applied to the outside of the concave portion of the mating surface of the back plate mounting flange, it is not necessary to fill the concave portion with the sealing agent, and the application amount of the sealing agent can be saved. Can do. Further, when the back plate is attached to the back plate mounting flange, even if the sealing agent protrudes to the position of the through hole of the back plate, the sealing agent can be received in the recess and does not leak.

It is the perspective view which looked at the axle part of the specification of a vehicle provided with an ABS apparatus from the inside of a vehicle. It is a disassembled perspective view of the backplate attachment flange and backplate of a specification specification vehicle provided with an ABS apparatus. It is a disassembled perspective view of the backplate attachment flange and backplate of a vehicle of a specification which is not provided with an ABS device. It is a front view of the mating surface of the backplate attachment flange in which a through-hole is not formed. It is the sectional view on the AA line of FIG. It is a partial front view of the mating surface of a back plate. It is the partial front view which looked at the through-hole part of the state which attached the backplate to the backplate attachment flange from the backplate side.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 is a perspective view of an axle portion of a vehicle having an ABS device as viewed from the inside of the vehicle, FIG. 2 is an exploded perspective view of a back plate mounting flange and a back plate of the vehicle, and FIG. 3 does not include an ABS device. 4 is an exploded perspective view of the back plate mounting flange and the back plate of the vehicle of the specification, FIG. 4 is a front view of the mating surface of the back plate mounting flange in which a through hole is not formed, and FIG. 6 is a partial front view of the mating surface of the back plate, and FIG. 7 is a partial front view of the through-hole portion in a state in which the back plate is attached to the back plate mounting flange from the back plate side.

  As shown in FIG. 1, a cylindrical axle 1 is arranged along the vehicle width direction at the rear of a four-wheel vehicle, and the right and left ends (only the right end is shown in FIG. 1) of the axle 1 are shown in the present invention. The flange-like back plate mounting flanges 2 are arranged respectively. A disc-shaped back plate (dust cover) 3 that covers the inside of the drum brake (not shown) is attached to the mating surface of each back plate mounting flange 2 on the outside of the vehicle. Sealed by the agent 4 (see FIG. 4).

  Here, the spindle 5 shown in FIG. 2 (only one is shown in FIG. 2) is attached to the left and right ends of the axle 1, the back plate mounting flange 2 is welded to the spindle 5, and the spindle 5 A rear wheel (not shown) is rotatably attached to the vehicle via an axle hub. As shown in FIG. 1, the left and right ends of the axle 1 are respectively supported by a pair of left and right trailing arms 6 (only one is shown in FIG. 1) constituting a rear suspension via a bracket 7 and a rubber bush 8. ing. In FIG. 1, reference numeral 9 denotes a parking cable that passes through the back plate 3 and is connected to a drum brake (not shown).

  By the way, there are specifications with or without an ABS device, and in a vehicle with an ABS device, the wheel speed sensor 10 is connected to the back plate mounting flange 2 as shown in FIGS. It is attached from the inside, and the sensor portion 10a at the tip of the wheel speed sensor 10 passes through a circular through hole 2a formed in the back plate mounting flange 2 and a circular through hole 3a formed in the back plate 3. And exposed on the inner surface side of the back plate 3. Here, the through holes 2a and 3a formed in the back plate mounting flange 2 and the back plate 3 have the same diameter, and when the back plate 3 is mounted on the back plate mounting flange 2, the through holes 2a and 3a are Communicate with each other to form one circular hole. As shown in FIG. 1, a cable 11 extends from the wheel speed sensor 10 and is connected to a controller (not shown). As shown in FIGS. 4 and 6, the back plate mounting flange 2 and the back plate 3 are formed with large-diameter circular holes 2b and 3b through which the spindle 5 passes, respectively. Four screw holes are formed around the large-diameter circular hole 2b, and a bolt insertion hole is formed around the large-diameter circular hole 3b of the back plate 3 corresponding to the screw hole. Four locations are formed. The back plate 3 is fixed to the back plate mounting flange 2 by inserting bolts (not shown) into these bolt insertion holes and screwing the bolts into the screw holes of the back plate mounting flange.

  On the other hand, in a vehicle having a specification that does not include an ABS device, the wheel speed sensor 10 shown in FIGS. 1 and 2 is not attached to the back plate mounting flange 2 as shown in FIG. The through-hole 2a shown in FIG. 2 is not formed. On the other hand, the back plate 3 is formed with a through hole 3a as shown in FIGS. 3 and 6 even if the back plate 3 is provided in a vehicle having a specification that does not include an ABS device for common parts. The back plate 3 is used.

  Thus, the back plate 3 is attached to the mating surface of the outer surface of the back plate mounting flange 2, but the two are sealed by the sealant 4 as described above. Here, the sealing agent 4 is applied to the mating surface of the back plate mounting flange 2, and more specifically, is applied outside the large-diameter circular hole 2b and the through-hole 2a and inside the four screw holes. At this time, the application of the sealant 4 to the back plate mounting flange 2 shown in FIG. 2 in which the through hole 2a is formed is accurately performed along the periphery of the through hole 2a and the circular hole 2b, but the through hole 2a is formed. 3 and 4 is not provided with a through-hole 2a which serves as a mark. Therefore, the sealing agent 4 is applied to the mating surface of the back-plate mounting flange 2 and the through-hole of the back plate 3 As described above, it was difficult to apply along the periphery of 3a.

  Therefore, in the present embodiment, as shown in FIG. 4, three circular hole-shaped concave portions 12 indicating the positions of the through holes 3 a formed in the back plate 3 are formed on the mating surface of the back plate mounting flange 2. ing. Here, the back plate mounting flange 2 is a forged product, and the recess 12 is formed simultaneously with the forging of the back plate mounting flange 2. Further, the mating surface of the back plate mounting flange 2 formed by forging is roughly cut, but as shown in FIG. 5, the depth h of the recess 12 before being cut is increased by cutting the mating surface. It is set larger than the machining allowance t (h> t) so that a part of the recess 12 remains on the mating surface even after being cut by t.

  Further, as shown in FIG. 7, the recess 12 is located at a position that can be seen from the through hole 3a of the back plate 3 (that is, within the range of the through hole 3a) with the back plate 3 attached to the back plate mounting flange 2. As shown in FIG. 4, the sealing agent 4 is applied to the outside of the recess 12 formed in the back plate mounting flange 2.

  As described above, in the present embodiment, even if the back plate mounting flange 2 shown in FIG. 4 is not formed with the through hole 2a, the mating back plate 3 is formed using the recess 12 formed on the mating surface as a mark. The sealing agent 4 can be accurately applied with high productivity so as not to enter the through-hole 3a along the periphery of the through-hole 3a. When the back plate 3 is attached to the axle hub 2, the sealing agent 4 is The occurrence of problems such as the occurrence of a sealing failure is prevented.

  Moreover, in this Embodiment, since the recessed part 12 was formed simultaneously with the forge of the backplate attachment flange 2, productivity is improved. Since the depth h of the recess 12 is set to be larger than the machining allowance t of the mating surface of the back plate mounting flange 2 (h> t), the recess 12 does not disappear due to the cutting process. As a mark, the sealing agent 4 can be accurately applied to the mating surface of the back plate mounting flange 2 with high productivity.

  In addition. In the present embodiment, since the recess 12 is formed at a position visible from the through hole 3a of the back plate 3 with the back plate 3 attached to the back plate mounting flange 2, the back plate mounting flange in which the through hole 2a is formed. 2, the concave portion 12 is cut by cutting the through hole 2 a formed to have substantially the same diameter as the through hole 3 a of the back plate 3, and the concave portion 12 is joined to the back plate mounting flange 2 and the back plate 3. There is no harm to the sealing performance of the surface. In addition, since the application | coating of the sealing agent 4 to the mating surface of the backplate mounting flange 2 of the specification in which the through-hole 2a is formed is made with sufficient productivity along the periphery of the through-hole 2a, the recessed part 12 becomes the through-hole 2a. There is no problem if it is excised.

  In the present embodiment, since the sealing agent 4 is applied to the outside of the concave portion 12 of the mating surface of the back plate mounting flange 2, the sealing agent 4 does not enter the concave portion 12, and the application amount of the sealing agent 4 Can be saved. When the back plate 3 is attached to the back plate mounting flange 2, even if the sealing agent 4 protrudes into the position of the through hole 3 a of the back plate 3, the sealing agent 4 can be received by the recess 12 and leak. Absent.

  In the above embodiment, three circular holes 12 are formed on the mating surface of the back plate mounting flange 2, but the number and shape of the recesses 12 can be arbitrarily set. In the present embodiment, the back plate mounting flange 2 is welded to a spindle 5 to which a rear wheel (not shown) is rotatably mounted via an axle hub, which is a structure for a so-called driven wheel. Thus, in an axle that uses an axle shaft for a so-called drive wheel, a back plate mounting flange can be formed integrally with an axle hub that is disposed at the left and right ends of the axle and rotatably supports the axle shaft. It is good also as a simple structure.

DESCRIPTION OF SYMBOLS 1 Axle 2 Backplate mounting flange 2a Through hole of backplate mounting flange 3 Backplate 3a Throughhole of backplate 4 Sealant 10 Wheel speed sensor 12 Concave h Depth of recess before cutting t Axle hub with machining allowance

Claims (4)

A vehicle back plate mounting that is attached to both left and right ends of an axle arranged along the vehicle width direction, in which a drum brake back plate is mounted, and a sealing agent is applied to a mating surface to which the back plate is mounted. In the flange
A back plate mounting flange of a vehicle, wherein a recess indicating a position of a through hole formed in the back plate is formed on a mating surface to which the back plate is mounted.   2. The back plate mounting flange for a vehicle according to claim 1, wherein the recess is formed at the same time as forging, and the depth of the recess is set such that the recess is not removed by cutting of a mating surface to which the back plate is mounted. .   The back plate mounting flange for a vehicle according to claim 1 or 2, wherein the recess is formed at a position visible from a through hole of the back plate in a state where the back plate is mounted. The vehicle back plate mounting flange according to any one of claims 1 to 3, wherein a sealing agent is applied to the outside of the concave portion of the mating surface to which the back plate is mounted.

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