JP2008223441A - Rail travelling wheel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rail travelling wheel of an inexpensive and lightweight constitution, which is highly versatile by facilitating easy common application in different using conditions. <P>SOLUTION: The rail travelling wheel comprises a wheel body 10 in which a flange 11, a rail tread 15 and an adaptor housing part 13 are integrally formed, and an adaptor 2 having a journal structure to an axle 5 and arranged to be fitted into the adaptor housing part 13. According to this structure, many kinds of wheels having different design specifications can be easily obtained by freely designing the adaptor 2 according to the purpose, use conditions or the like of the wheel 1 without being limited by the forming material or the like of the wheel body 10. Thus, the wheel 1 can be used in common and can enhance its versatility, leading to a lower cost, compared to a conventional integrally-structured wheel, for example, which requires alteration of the wheel structure when the design specification is changed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

    The present invention relates to, for example, a rail traveling wheel that is provided in a sliding door type gate and moves the gate along a rail.

  Various structures have been proposed as the structure of this type of rail traveling wheel (see, for example, Patent Documents 1 to 3).

  The wheels shown in Patent Documents 1 and 2 are both integrally formed by casting or cutting, and the performance in terms of durability such as durability and wear resistance as a wheel is satisfied, There was still a problem with the request for lighter and lower cost gates.

  Against the backdrop of such circumstances, as shown in Patent Document 3, the entire wheel is not made of metal, for example, in a wheel with a hook, both the flange and the rolling contact part to the rail are made of resin, Only a support part that supports an axle is made of metal, and a wheel is formed by combining these parts to reduce the weight and cost.

JP 2000-204864 A JP 2000-179266 A Japanese Patent Laying-Open No. 2005-240490.

  By the way, in the rail traveling wheel, there are universal technical problems such as weight reduction and cost reduction as described above, but in addition to this, from the viewpoint of promoting further cost reduction, There are also new technical requirements for sharing and expanding versatility.

  However, in the conventional rail running wheel, the relationship between the wheel and the axle that supports the wheel is fixed to a predetermined specification. For example, if you want to change the diameter of the support shaft according to the load to be used, In order to deal with this, it is necessary to change the wheel structure itself, such as changing the diameter of the wheel shaft hole. There was a problem that it was difficult to expand versatility.

  SUMMARY OF THE INVENTION The present invention has been made for the purpose of providing a rail travel wheel that is lightweight and inexpensive and that can be easily used between wheels having different use conditions and is highly versatile.

  The present invention employs the following configuration in order to solve the above problems.

  In the rail traveling wheel according to the first invention of the present application, a cylindrical rail tread surface portion 15 and an annular flange portion 11 extending radially outward continuously from one end side in the axial direction of the rail tread surface portion 15. And an adapter housing portion 13 that is integrally formed with a concave-shaped adapter housing portion 13 and an adapter 2 that is provided with a shaft support structure for the axle 5 and that is fitted and disposed in the adapter housing portion 13. .

  The second invention of the present application is characterized in that, in the rail traveling wheel according to the first invention, the flange portion 11 includes an inclined wall surface 11b extending obliquely outward in the radial direction.

In the present embodiment, the straight wall surface 11a is formed on the flange portion 11, but the entire flange portion 11 may be the inclined wall surface 11b without forming the straight wall surface 11a.

  The third invention of the present application is characterized in that in the rail traveling wheel according to the first or second invention, the adapter 2 is configured to be detachable from the adapter housing portion 13.

  According to a fourth aspect of the present invention, in the rail traveling wheel according to the first, second or third aspect, the wheel body 10 is integrally formed by deep drawing of a metal plate.

  In the fifth invention of the present application, in the rail traveling wheel according to the fourth invention, the rail tread surface portion 15 and the adapter housing portion 13 of the wheel body 10 are annular deep drawing portions obtained by deep drawing. It is characterized by comprising an outer peripheral wall A11 and an inner peripheral wall A12 of A1, respectively.

  In the sixth invention of the present application, in the rail traveling wheel according to the fourth invention, an inner pressing portion A3 positioned on the radially inner side of the deep drawing portion A1 is provided at one axial end side of the adapter housing portion 13. A feature is that a stopper 17 is provided.

In the present invention, the following effects can be obtained.
(A) A rail traveling wheel according to the first invention of the present application is a ring-shaped annular rail that continuously extends to one end side in the axial direction of the cylindrical rail tread portion 15 and the rail tread portion 15. Since the wheel main body 10 integrally formed with the flange portion 11 and the recessed adapter accommodating portion 13 and the adapter 2 provided with a shaft support structure for the axle 5 and fitted and arranged in the adapter accommodating portion 13 are provided. The adapter 2 can be freely set according to the use of the wheel, the use conditions, etc. without being caught by the molding material of the wheel body 10, and various types of wheels with different design specifications can be easily obtained. Compared to the case of changing the design specifications of a conventional integrated wheel, the wheel can be shared and the versatility can be expanded, and the cost can be further reduced. Can be expected.
(B) According to the rail traveling wheel according to the second invention of the present application, in addition to the effect described in the above (a), the following specific effect is obtained. That is, when the wheel travels on the rail by the rail tread portion 15, the positional deviation between the rail tread portion 15 and the rail upper surface in the wheel axis direction and the separation restriction from the rail due to the lifting of the wheel are: In this case, since the flange portion 11 includes the inclined wall surface 11b, the positional deviation restriction and the separation restriction are performed. It is performed by the inclined wall surface 11b, and while maintaining a high level of ability to restrict separation by the inclined wall surface 11b, the contact range with the rail side surface is narrow and the frictional resistance is suppressed to be small at the time of displacement restriction. Traveling is realized, and as a result, the traveling performance and reliability of the wheels are compatible.
(C) According to the rail traveling wheel according to the third aspect of the present invention, the following specific effects can be obtained in addition to the effects described in (a) or (b). In other words, in the present invention, the adapter 2 is configured to be detachable from the adapter housing portion 13, so that a plurality of types of adapters 2 having different specifications can be selected and assembled to the wheel body 10. For example, by using the wheel body 10 having the same configuration, various types of wheels 1 having different applications and functions can be easily obtained. As a result, the cost can be further reduced by sharing the wheel body 10 and the wheel. The versatility of will be further expanded.
(D) According to the rail traveling wheel according to the fourth invention of the present application, in addition to the effects described in the above (a), (b) or (c), the following specific effects can be obtained. That is, in the present invention, since the wheel body 10 is integrally formed by deep drawing of a metal plate, for example, compared to the case where the wheel body 10 is formed of a cast product as in the prior art, In addition to the reduction in weight, press molding is less costly than cast molding, so the cost can be reduced by reducing the molding cost. As a result, lighter wheels are provided at lower cost. be able to.
(E) According to the rail traveling wheel according to the fifth aspect of the present invention, in addition to the effect described in (d) above, the following specific effect is obtained. In other words, in the present invention, the rail tread portion 15 and the adapter accommodating portion 13 of the wheel body 10 are respectively constituted by the outer peripheral wall A11 and the inner peripheral wall A12 of the annular deep drawing portion A1 obtained by deep drawing. Therefore, the rail tread portion 15 and the adapter accommodating portion 13 are automatically and accurately formed by deep drawing. For example, when the rail tread portion 15 and the adapter accommodating portion 13 are respectively formed by casting. In comparison, further cost reduction and higher accuracy of the wheel 1 can be expected.
(F) According to the rail traveling wheel according to the sixth invention of the present application, in addition to the effect described in (d) above, the following specific effect is obtained. That is, in this invention, since the stopper 17 composed of the inner pressing portion A3 located on the radially inner side of the deep drawing portion A1 is provided on one axial end side of the adapter housing portion 13, the adapter housing portion When the adapter 2 is assembled to the wheel 13, the positioning of the adapter 2 is easily and accurately performed by the stopper 17, and as a result, the wheel 1 configured by assembling the adapter 2 to the wheel main body 10. Improvement in manufacturing accuracy can be expected.

  Hereinafter, embodiments of the present invention will be specifically described based on two examples.

"Configuration of wheel 1"
1 to 5 show a first embodiment. FIG. 1 shows a wheel 1 mainly applied as a wheel for a gate as an embodiment of a rail traveling wheel according to the present invention. The wheel 1 includes a wheel main body 10 and an adapter 2, and the wheel main body 10 is particularly formed by casting, cutting or press molding. Here, as an example of the forming method, the case where the wheel body 10 is constituted by a press-formed product A obtained by deep drawing of a metal plate will be described as an example.

  In addition, a stainless steel plate, a corrosion-resistant hot dip galvanized steel plate, etc. are used for the metal plate which forms the wheel main body used in the present invention, and the plate thickness is 1.5 to 3.0 mm, preferably 2.0 mm.

  The wheel body 10 is constituted by the press-formed product A as described above. As shown in FIGS. 1 and 2 (a) and 2 (b), this press-formed product A has a depth that swells in a U-shaped cross section between an annular outer presser portion A2 and a small-diameter annular inner presser portion A3. A diaphragm A1 is formed. The outer presser portion A2 of the press-formed product A is the flange portion 11, the outer peripheral wall A11 of the deep drawn portion A1 is the rail tread portion 15, and the inner peripheral wall A12 of the deep drawn portion A1 is the adapter accommodating portion 13. Thus, the wheel main body 10 including the flange portion 11, the rail tread portion 15, and the adapter accommodating portion 13 is obtained.

  The flange portion 11 is an annular plate portion that extends radially outward from one end in the axial direction of the rail tread surface portion 15, and a straight wall surface 11 a that extends from the rail tread surface portion 15 in a direction substantially orthogonal thereto. And an inclined wall surface 11b that extends radially outward from the outer peripheral edge of the straight wall surface 11a and inclines so as to approach the back surface 11c as it goes radially outward.

In the present invention, the straight wall surface 11a is not necessarily formed, and the entire flange portion 11 may be the inclined wall surface 11b.

  The adapter accommodating portion 13 is a concave space formed inside the inner peripheral wall A12, and one end side in the axial direction is defined by the inner presser portion A3. It is used as a stopper 17 for the adapter 2 to be described. A round hole 14 is provided in the axial center portion of the stopper 17.

  Further, the bottom wall A13 of the deep-drawn portion A1 of the press-formed product A is a side wall in which the rail tread portion 15 and the adapter accommodating portion 13 are made continuous at one end in the axial direction in the wheel body 10 to integrate them. 12 functions.

  The adapter 2 is fitted and arranged in the adapter accommodating portion 13 of the wheel body 10 and functions as a support portion of the axle 5. Here, the following three structural examples are shown. In the following, for convenience of explanation, each of these three structural examples will be referred to as adapters 2A, 2B, 2C.

  The adapter 2A according to the first structure example is for slidingly supporting the wheel body 10 with respect to the axle 5, and is made of a resin material (for example, nylon 6) as shown in FIGS. The outer peripheral surface 21a is formed of a resin molded body 21 integrally formed in a thick cylindrical shape, and has an outer diameter dimension capable of being closely fitted to the inner peripheral surface of the adapter housing portion 13 of the wheel body 10, and its shaft. A shaft hole 21b having an inner diameter dimension capable of sliding relative to the shaft support portion 5a of the axle 5 is provided in the center portion. The axial width of the adapter 2A is set to be shorter than the axial width of the adapter accommodating portion 13 by a predetermined dimension.

  Similar to the adapter 2A according to the first structural example, the adapter 2B according to the second structural example slides and supports the wheel body 10 with respect to the axle 5, and is shown in FIGS. As shown in FIG. 4, a metal bush 24 is fitted and fixed to an inner peripheral hole of a resin molded body 22 integrally formed in a thick cylindrical shape with a resin material (for example, nylon 6), and an outer peripheral surface 22a thereof. Has an outer diameter that can be closely fitted to the inner peripheral surface of the adapter accommodating portion 13 of the wheel body 10, and the inner diameter of the shaft hole 22 b formed by the inner peripheral hole of the bush 24 is the axis of the axle 5. The dimension is set so as to be slidable relative to the support portion 5a.

  The adapter 2C according to the third structural example is for rolling support of the wheel body 10 with respect to the axle 5, and is constituted by a ball bearing 23 as shown in FIG. 1 and FIG. The diameter dimension of the outer peripheral surface 23a is set to a dimension capable of being closely fitted to the inner peripheral surface of the adapter accommodating portion 13, and the inner diameter dimension of the shaft hole 23b formed by the inner peripheral hole of the inner ring is set to the axle 5 described above. The dimension is set so as to be slidable relative to the shaft support portion 5a.

  The adapters 2A, 2B, and 2C according to the above structural examples are examples of the structure when paying attention to the shaft support function (that is, the sliding support and the rolling support). Here, the same axle 5 is used. On the premise of use, the outer diameter dimension is set to correspond to the inner diameter dimension of the adapter accommodating portion 13, and the shaft hole dimension is set to correspond to the outer diameter dimension of the axle 5. However, for example, depending on the use of the wheel 1 or the use load, it may be necessary to change the diameter of the axle 5 from the viewpoint of securing the strength performance. In this case, as the adapter 2, In the adapters 2A to 2C according to the respective structural examples, those having the same structure and the same outer diameter are used in which only the diameters of the shaft holes are different.

  Each of the adapters 2A, 2B, 2C is arbitrarily selected according to a required shaft support function or a load condition as shown in FIG. 3, and the adapter housing of the wheel body 10 is accommodated as shown in FIG. The wheel 1 is configured by the wheel body 10 and the adapter selected from the adapters 2A, 2B, and 2C. That is, by selecting and setting the adapters 2A, 2B, and 2C, various wheels having different design specifications can be easily obtained, and the wheel body 10 can be shared and the versatility of the wheel 1 can be increased. It is.

  In this case, since the adapters 2A, 2B, 2C are configured to be detachable from the adapter accommodating portion 13, the adapters 2A, 2B, 2C can be easily selectively attached to the wheel body 10 side. Can be done quickly.

  As shown in FIG. 3, when the adapters 2A, 2B, and 2C are fitted and arranged in the adapter housing portion 13 of the wheel body 10, the end surfaces in the axial direction of the adapters 2A, 2B, and 2C are the wheels. Since the axial position of the adapters 2A, 2B, 2C with respect to the wheel body 10 is automatically determined by contacting the stopper 17 of the body 10, the side of the wheel body 10 of the adapters 2A, 2B, 2C is determined. Assembling and positioning operations are extremely easy, and the assembling accuracy is properly maintained.

  Thus, the wheel 1 is composed of the wheel body 10 and the adapters 2A, 2B, 2C, and the wheel body 10 is a press-formed product of a metal plate. As compared with the case where the press molding is performed, the weight can be reduced, and the press molding can be performed at a lower cost by reducing the molding cost because the molding cost is lower than that of the casting. As a result, the weight is reduced. Wheels can be provided at a lower cost.

  In addition, since the adapters 2A, 2B, 2C are separate from the wheel body 10, the adapters 2A, 2B, 2C are not bound by the molding material of the wheel body 10 and the use of the wheel 1, Various types of wheels with different design specifications can be easily obtained by setting them freely according to the use conditions, etc. Compared to such a case, the wheel body 10 can be shared, and thus the wheel 1 can be shared and the versatility of the wheel 1 can be increased. As a result, further cost reduction can be expected. It is.

  Furthermore, in the wheel 1 according to this embodiment, since the adapter 2 is configured to be detachable from the adapter accommodating portion 13, a plurality of types or specifications of the adapters 2A, 2B, 2C can be selectively assembled, and this facilitates the sharing of the wheel body 10. As a result, for example, using the wheel body 10 having the same configuration, various types of wheels 1 having different applications and functions can be easily obtained. The cost reduction and versatility of the wheel 1 can be further promoted.

"Application example of wheel 1"
4 and 5 show a state in which the wheel 1 is attached to a sliding door gate 50 as a traveling wheel as an application example of the wheel 1.

  The gate 50 includes a door main body 55 in which a lower girder 51 and an upper girder 52 are connected by left and right horizontal girders 53 and a plurality of crosspieces 54 are arranged at predetermined intervals between the lower girder 51 and the upper girder 52. Prepare. Then, the upper girder 52 of the door main body 55 and the auxiliary girder 56 that are spaced apart from and in parallel to the door main body 55 are integrated by the joint material 57 and the stay material 58, and the upper girder 52 and the auxiliary girder 56 are wheel-supported. An appropriate number of the wheels 1 are fixed via the bracket 19, and each wheel 1 travels on a pair of front and rear rails 60, 60 arranged in parallel at a predetermined interval.

  More specifically, as shown in FIG. 5, the wheel 1 is disposed via the axle 5 in the wheel support bracket 19 having a substantially U-shaped cross section attached to the lower end surface of the lower girder 51 or the auxiliary girder 56 of the gate 50. And is supported so that it can roll.

  Within the wheel support bracket 19, the position of the wheel 1 is regulated by the collar 7 through which the axle 5 is inserted.

  In this case, the rail tread portion 15 of the wheel 1 is placed on the upper surface 60 a of the rail 60, and the flange portion 11 is in close proximity to the side surface 60 b of the rail 60. In this case, the flange portion 11 includes a straight wall surface 11a extending continuously in the direction perpendicular to the rail tread surface portion 15 and an inclined wall surface 11b continuing to the outer peripheral edge of the straight wall surface 11a. When the straight wall surface 11a is engaged with the side surface 60b of the rail 60, the lateral displacement of the wheel 1 with respect to the rail 60 is restricted, and the inclined wall surface 11b is engaged with the side surface 60b of the rail 60. By combining, separation of the wheel 1 due to lifting from the rail 60 is restricted. In particular, regarding positional displacement regulation, for example, compared to a case where the entire flange portion 11 is configured by the straight wall surface 11a, the contact range with the rail side surface 60b at the time of positional displacement regulation is narrow, and the frictional resistance thereof. Is kept small, and light driving is realized.

  Further, when the stopper 9 extending toward the wheel support bracket 19 is engaged with the lower surface 60c of the rail 60, the lifting of the wheel 1 from the rail 60 is restricted.

  Due to the synergistic effect of the positional deviation regulating action, the separation regulating action, and the lift regulating action of the wheels 1, the wheel 1 travels stably on the rail 60, and a smooth opening / closing door operation of the gate 50 is realized.

  FIG. 6 shows a second embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  The wheel 1 shown in FIG. 6 is a metal cast product by the lost wax method. The flange part 11, the adapter accommodating part 13, and the rail tread part 15 are integrally formed, and the adapter 2 similar to the first embodiment is fitted and disposed in the adapter accommodating part 13. In the figure, reference numeral 8 denotes a C-shaped ring that prevents the adapter 2 from being detached from the adapter accommodating portion 13. If the wheel 1 is formed of such a cast metal product, it can be easily processed into a shape advantageous in terms of strength as compared with a press-formed product, and is suitable for a wheel of a large gate.

  In addition, in the said 1st, 2nd Example, although the wheel 1 was formed with the metal material, it is also possible to form using resin other than a metal material.

1 is an exploded perspective view of a rail traveling wheel according to a first embodiment of the present invention and an adapter attached to the wheel. FIG. It is structure explanatory drawing of the wheel shown in FIG. FIG. 3 is an explanatory diagram of an adapter mounting state with respect to the wheel illustrated in FIG. 1. It is a fragmentary perspective view of the gate door provided with the wheel shown in FIG. It is VV expanded sectional drawing of FIG. It is a rail traveling wheel which concerns on 2nd Example of this invention, (i) is a front view, (ii) represents WW sectional drawing.

Explanation of symbols

1 ·· Wheel 2 ·· Adapter 3 · · Adapter 4 · · Adapter 5 · · Axle 9 · · Detachment 10 · · Wheel body 11 · · Hook 12 · · Side wall 13 · · Adapter housing 14 · · Round Hole 15 ·· Rail tread portion 17 ·· Stopper 19 ·· Wheel support bracket 21 ·· Rolling body 22 ·· Bearing 23 ·· Ring body 24 ·· Bushing 50 ·· Gate 51 ·· Lower girder 52 ·· Upper girder 53 · · Cross girder 54 · · Crosspiece 55 · · Door main body 56 · · Auxiliary girder 57 · · Joint material 58 · · Stay material 60 · · Rail A · · Press-formed product A1 · · Deep drawn part A2 · · Outer presser Part A3 ・ ・ Inner presser part

Claims (6)

A cylindrical rail tread portion (15), an annular flange (11) extending radially outward continuously from one end side in the axial direction of the rail tread portion (15), and a concave adapter housing portion ( 13) is formed by including a wheel body (10) integrally formed and an adapter (2) that is provided with a shaft support structure for the axle (5) and that is fitted and arranged in the adapter accommodating portion (13). Rail running wheels. In claim 1,
The rail travel wheel, wherein the flange portion (11) includes an inclined wall surface (11b) extending obliquely outward in the radial direction. In claim 1 or 2,
The rail travel wheel characterized in that the adapter (2) is configured to be detachable from the adapter housing portion (13). In claim 1, 2 or 3,
A wheel for rail travel, wherein the wheel body (10) is integrally formed by deep drawing of a metal plate. In claim 4,
The rail tread surface portion (15) and the adapter housing portion (13) of the wheel body (10) are an outer peripheral wall (A11) and an inner peripheral wall (A12) of an annular deep drawing portion (A1) obtained by deep drawing. Rail running wheels, each of which is constituted by: In claim 4,
A stopper (17) composed of an inner pressing portion (A3) located radially inward of the deep drawing portion (A1) is provided at one axial end side of the adapter housing portion (13). Rail running wheels.

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