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JP2014218180A - Double-wheel caster - Google Patents

Double-wheel caster Download PDF

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JP2014218180A
JP2014218180A JP2013099212A JP2013099212A JP2014218180A JP 2014218180 A JP2014218180 A JP 2014218180A JP 2013099212 A JP2013099212 A JP 2013099212A JP 2013099212 A JP2013099212 A JP 2013099212A JP 2014218180 A JP2014218180 A JP 2014218180A
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shaft
caster
wheel
hole
side plate
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JP2013099212A
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JP6338823B2 (en
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保之 棚橋
Yasuyuki Tanahashi
保之 棚橋
和展 福田
Kazunori Fukuda
和展 福田
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TOKAI CASTER KK
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TOKAI CASTER KK
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B7/00—Wheel cover discs, rings, or the like, for ornamenting, protecting, venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall, e.g. wheel cover discs, wheel cover discs with cooling fins

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

【課題】車輪の回動に関係なく側板を静止させる。【解決手段】双輪キャスタ２は、キャスタ本体３の両側３Ａ、３Ｂに回転自在に支持された車輪５Ａ、５Ｂを備えている。キャスタ本体３の両側面３Ａ、３Ｂには固定軸４が突出して設けられる。固定軸４は、キャスタ本体３に断面非円形に形成された貫通孔１０に合致して形成されて貫通孔１０に挿通され、両端がキャスタ本体両側３Ａ、３Ｂから突出する軸取付部材１１と、これら突出部１１Ａ、１１Ｂにそれぞれ嵌合して取り付けられる軸部材１２、１２とを備えて構成される。軸部材１２は、突出部１１Ａ、１１Ｂに嵌る円筒部１２Ａを有し、この円筒部１２Ａの外端には鍔部１２Ｂが形成される。車輪５Ａ、５Ｂは軸孔７を介して軸部材１２の円筒部１２Ａに回動自在に嵌装され、鍔部１２Ｂに側板１５が着脱自在に装着される。【選択図】図２A side plate is stationary regardless of the rotation of a wheel. A twin-wheel caster 2 includes wheels 5A, 5B rotatably supported on both sides 3A, 3B of a caster body 3. A fixed shaft 4 protrudes from both side surfaces 3A and 3B of the caster body 3. The fixed shaft 4 is formed so as to match the through-hole 10 formed in the caster body 3 with a non-circular cross-section, and is inserted into the through-hole 10. Both ends of the fixed shaft 4 protrude from the caster body both sides 3A and 3B, Shaft members 12 and 12 that are fitted and attached to the protrusions 11A and 11B, respectively. The shaft member 12 has a cylindrical portion 12A that fits into the protruding portions 11A and 11B, and a flange portion 12B is formed at the outer end of the cylindrical portion 12A. The wheels 5A and 5B are rotatably fitted to the cylindrical portion 12A of the shaft member 12 through the shaft hole 7, and the side plate 15 is detachably attached to the flange portion 12B. [Selection] Figure 2

Description

本発明は、双輪キャスタに関するものである。   The present invention relates to a twin wheel caster.

一般に、双輪キャスタは、左右の車輪と、これら車輪が車軸を介して回転自在に支持されたキャスター本体と、このキャスター本体の上記車軸から偏心した位置に設けられ家具等の被取付け体の底部に固定される旋回軸とを備えている。通常は、キャスター本体が上記旋回軸を中心に自由に旋回するとともに車輪が回転して任意の方向に走行可能な自在車として使用される。ところで、上記従来の双輪キャスタでは、車輪の外面に側板が取り付けられ、車輪と一体動するとともに、回動する車軸側への異物の進入を防ぐようになっている（例えば、特許文献１参照）。   In general, a twin-wheel caster is provided on left and right wheels, a caster body in which these wheels are rotatably supported via an axle, and a bottom of an attached body such as furniture provided at a position eccentric from the axle of the caster body. And a pivot shaft that is fixed. Normally, the caster body is used as a free wheel capable of freely turning around the turning axis and capable of traveling in any direction as the wheels rotate. By the way, in the conventional twin wheel caster, a side plate is attached to the outer surface of the wheel so as to move integrally with the wheel and prevent foreign matter from entering the rotating axle (see, for example, Patent Document 1). .

ところで、近年、キャスタだけでなく車輪にもデザイン性が求められてきており、側板表面にも、デザインを施したり、社名やロゴをプリントして宣伝効果を生んだり、顧客へのアピールに用いられることが多い。   By the way, in recent years, design has been demanded not only for casters but also for wheels, and the surface of the side plate is also designed, and the company name and logo are printed to create an advertising effect, which is used to appeal to customers. There are many cases.

特開２００８−２１３７３７号公報JP 2008-213737 A

しかしながら、特許文献１に示されたキャスタでは、側板は車輪とともに一体回動するので、側板表面にデザインを施したり、社名やロゴをプリントしても、車輪の回転時には、回転のせいで損なわれてしまうという問題がある。   However, in the caster shown in Patent Document 1, since the side plate rotates together with the wheel, even if a design is made on the surface of the side plate or a company name or logo is printed, the rotation of the wheel is lost due to the rotation. There is a problem that it ends up.

本発明は上記課題を解決するためになされたもので、たとえ車輪が回転していても、側板を回転させないようにする双輪キャスタを提供することを目的とするものである。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a twin-wheel caster that prevents the side plate from rotating even if the wheel rotates.

本発明の請求項１に係る双輪キャスタは、キャスタ本体とこのキャスタ本体両側に車軸を介して回転自在に支持された車輪とを備え、被取付体に旋回軸を介して旋回可能に固定される双輪キャスタにおいて、車輪の外側に回転しない側板を設けたことを特徴とするものである。   A twin-wheel caster according to a first aspect of the present invention includes a caster main body and wheels that are rotatably supported on both sides of the caster main body via an axle, and is fixed to the attached body so as to be rotatable via a pivot shaft. The twin-wheel caster is characterized in that a side plate that does not rotate is provided outside the wheel.

本発明の請求項１に係る双輪キャスタでは、キャスタ本体とこのキャスタ本体両側に車軸を介して回転自在に支持された車輪とを備え、被取付体に旋回軸を介して旋回可能に固定される双輪キャスタにおいて、車輪の外側に回転しない側板を設けたことにより、たとえ車輪が回転していても側板を回転させないようにすることができ、安定した意匠面が確保される。   The twin-wheel caster according to claim 1 of the present invention includes a caster body and wheels that are rotatably supported on both sides of the caster body via axles, and is fixed to the attached body so as to be pivotable via a pivot shaft. In the twin-wheel caster, by providing a side plate that does not rotate outside the wheel, the side plate can be prevented from rotating even if the wheel is rotating, and a stable design surface is ensured.

本発明の請求項２に係る双輪キャスタは、車軸を、キャスタ本体両側から突出して設けた固定軸により構成し、この固定軸の突出部外側には、側板が装着される側板装着部を設けるとともに、キャスタ本体には、左右方向に断面非円形状の貫通孔を形成し、固定軸を、この貫通孔に合致して形成されるとともにこの貫通孔に挿通され両端部をキャスタ本体両側から突出させた軸取付部材と、軸取付部材の突出部に嵌る中空孔が形成された円筒部とこの円筒部の外端に鍔状に形成された側板装着部とを有する軸部材とを備えて構成したことを特徴とするものである。   In the twin-wheel caster according to claim 2 of the present invention, the axle is constituted by a fixed shaft provided so as to protrude from both sides of the caster body, and a side plate mounting portion to which the side plate is mounted is provided outside the protruding portion of the fixed shaft. The caster body is formed with a through-hole having a non-circular cross section in the left-right direction, and a fixed shaft is formed so as to match the through-hole and is inserted into the through-hole so that both ends protrude from both sides of the caster body. And a shaft member having a cylindrical portion in which a hollow hole that fits into the protruding portion of the shaft mounting member is formed and a side plate mounting portion that is formed in a bowl shape at the outer end of the cylindrical portion. It is characterized by this.

本発明の請求項３に係る双輪キャスタは、キャスタ本体には、左右方向に断面非円形状の貫通孔を形成し、固定軸を、この貫通孔に合致して形成されるとともにこの貫通孔に挿通され両端部をキャスタ本体両側から突出させた軸取付部材と、軸取付部材の突出部に嵌る孔が形成された環状軸部材とを備えて構成し、軸取付部材には、環状軸部材の外側に板状の側板装着部材を取り付けたことを特徴とするものである。   In the twin-wheel caster according to claim 3 of the present invention, the caster body is formed with a through hole having a non-circular cross section in the left-right direction, and a fixed shaft is formed so as to coincide with the through hole. A shaft mounting member that is inserted and protruded from both sides of the caster body and an annular shaft member that is formed with a hole that fits into the protruding portion of the shaft mounting member. A plate-like side plate mounting member is attached to the outside.

本発明の請求項４に係る双輪キャスタは、貫通孔は、断面が円の一部を切り欠いた切り欠き円に形成されるとともに、環状軸部材を軸受部材により構成したことを特徴とするものである。   The twin-wheel caster according to claim 4 of the present invention is characterized in that the through-hole is formed in a notch circle having a cross-section cut out of a part of the circle, and the annular shaft member is constituted by a bearing member. It is.

本発明に係る双輪キャスタは、キャスタ本体とこのキャスタ本体両側に車軸を介して回転自在に支持された車輪とを備え、被取付体に旋回軸を介して旋回可能に固定される双輪キャスタにおいて、車輪の外側に回転しない側板を設けたので、たとえ車輪が回転していても、側板を回転させないで、常時、安定した意匠面を確保することができる。   The twin-wheel caster according to the present invention includes a caster body and wheels that are rotatably supported on both sides of the caster body via an axle. Since the side plate which does not rotate is provided on the outside of the wheel, a stable design surface can be secured at all times without rotating the side plate even if the wheel is rotating.

図１は本発明の第１の実施例に係る双輪キャスタを示す斜視図である。（実施例１）FIG. 1 is a perspective view showing a twin-wheel caster according to a first embodiment of the present invention. Example 1 図２は図１の双輪キャスタの縦断面図である。FIG. 2 is a longitudinal sectional view of the twin-wheel caster of FIG. 図３は図１の双輪キャスタの一方の車輪を取り外した状態を示す要部の斜視図である。FIG. 3 is a perspective view of a main part showing a state where one wheel of the twin-wheel caster of FIG. 1 is removed. 図４は図１の双輪キャスタの一方の車輪を取り外した状態を示す要部の斜視図である。FIG. 4 is a perspective view of the main part showing a state where one wheel of the twin-wheel caster of FIG. 1 is removed. 図５は本発明の第２の実施例に係る双輪キャスタを示す斜視図である。（実施例２）FIG. 5 is a perspective view showing a twin-wheel caster according to a second embodiment of the present invention. (Example 2) 図６は図５の双輪キャスタの縦断面図である。6 is a longitudinal sectional view of the twin-wheel caster of FIG. 図７は図５の双輪キャスタの要部の説明図である。FIG. 7 is an explanatory diagram of a main part of the twin-wheel caster of FIG. 図８は図５の双輪キャスタの一方の車輪を取り外した状態を示す要部の斜視図である。FIG. 8 is a perspective view of the main part showing a state where one wheel of the twin-wheel caster of FIG. 5 is removed. 図９は図５の双輪キャスタの一方の車輪を取り外した状態を示す要部の斜視図である。FIG. 9 is a perspective view of an essential part showing a state in which one wheel of the twin-wheel caster of FIG. 5 is removed. 図１０は第２の実施例の変形例に係る双輪キャスタの説明図である。（実施例３）FIG. 10 is an explanatory diagram of a twin-wheel caster according to a modification of the second embodiment. (Example 3)

側板を回転させないで固定させ、車輪の回動に影響されずに意匠面を確保するという目的を、キャスタ本体と、このキャスタ本体両側に車軸を介して回転自在に支持された車輪とを備え、被取付体に旋回軸を介して旋回可能に固定される双輪キャスタにおいて、車軸を、キャスタ本体両側から突出して設けた固定軸により構成し、これら固定軸突出部外側には、側板が装着される側板装着部を設けたことにより実現した。   For the purpose of fixing the side plate without rotating and securing the design surface without being affected by the rotation of the wheel, the caster body and the wheels supported on both sides of the caster body via the axle are rotatably supported. In a twin-wheel caster fixed to a body to be mounted so as to be able to turn via a turning shaft, the axle is constituted by a fixed shaft provided so as to protrude from both sides of the caster body, and side plates are mounted on the outside of the fixed shaft protruding portions. This was realized by providing a side plate mounting part.

以下、図面に示す実施例により本発明を説明する。本発明の第１の実施例に係る双輪キャスタ２は、図１および図２に示すように、貫通孔１０が左右方向を貫通して形成されるキャスタ本体３と、このキャスター本体３に回転自在に支持された車輪５Ａ、５Ｂと、キャスター本体３に進行方向前方側に偏心させて垂直に形成された取付け孔（図示せず）内に回動自在に嵌合された旋回軸６とを備えている。双輪キャスタ２は、被取付体に旋回軸６を介して旋回可能に固定されるようになっている。   Hereinafter, the present invention will be described with reference to embodiments shown in the drawings. As shown in FIGS. 1 and 2, the twin-wheel caster 2 according to the first embodiment of the present invention has a caster main body 3 in which a through hole 10 is formed to penetrate in the left-right direction, and the caster main body 3 is rotatable. The wheels 5A and 5B supported by the wheel 5 and the pivot shaft 6 rotatably fitted in a mounting hole (not shown) formed vertically on the caster body 3 so as to be decentered forward in the traveling direction. ing. The twin-wheel caster 2 is fixed to the mounted body so as to be capable of turning via a turning shaft 6.

ところで、本実施例に係る双輪キャスタ２では、固定軸（車軸）４がキャスタ本体３の両側面３Ａ、３Ｂから突出して設けられる。固定軸４は、キャスタ本体３の貫通孔１０に挿通され両端部がそれぞれキャスタ本体両側３Ａ、３Ｂから突出する軸取付部材１１と、軸取付部材１１の突出部１１Ａ、１１Ｂにそれぞれ嵌合して取り付けられる軸部材１２、１２とを備えて構成される。貫通孔１０は断面が非円形の六角形状に形成される。棒状の軸取付部材１１は、この貫通孔１０の断面形状に合致して、すなわち、断面六角形状に形成される。軸部材１２は、内部に軸取付部材１１の突出部１１Ａ、１１Ｂに嵌合する中空孔が形成され外周が円形に形成された円筒部１２Ａを有している。この円筒部１２Ａの外端には、鍔部（側板装着部）１２Ｂが円筒部１２Ａと連続して一体に円形状に形成される。車輪５Ａ、５Ｂは軸孔７を介して軸部材１２の円筒部１２Ａに回動自在に嵌装されるようになっている。一方、貫通孔１０に挿通された軸取付部材１１も軸取付部材１１の突出部１１Ａ、１１Ｂに嵌合する軸部材１２、１２も回動が阻止されるようになっている。   By the way, in the twin-wheel caster 2 according to the present embodiment, the fixed shaft (axle) 4 is provided so as to protrude from the both side surfaces 3A, 3B of the caster body 3. The fixed shaft 4 is inserted into the through hole 10 of the caster body 3 and both ends thereof are fitted to the shaft mounting member 11 projecting from the caster body both sides 3A and 3B and the projecting portions 11A and 11B of the shaft mounting member 11, respectively. The shaft members 12 and 12 to be attached are provided. The through hole 10 is formed in a hexagonal shape with a non-circular cross section. The rod-shaped shaft attachment member 11 is formed in conformity with the cross-sectional shape of the through-hole 10, that is, in a hexagonal cross-section. The shaft member 12 has a cylindrical portion 12A in which a hollow hole that fits into the protruding portions 11A and 11B of the shaft mounting member 11 is formed and the outer periphery is formed in a circular shape. At the outer end of the cylindrical portion 12A, a collar portion (side plate mounting portion) 12B is formed in a circular shape integrally with the cylindrical portion 12A. The wheels 5 </ b> A and 5 </ b> B are rotatably fitted to the cylindrical portion 12 </ b> A of the shaft member 12 through the shaft hole 7. On the other hand, the shaft mounting member 11 inserted through the through hole 10 and the shaft members 12 and 12 fitted into the protruding portions 11A and 11B of the shaft mounting member 11 are also prevented from rotating.

軸部材１２の鍔部１２Ｂには、外周側に等間隔を隔てて係止孔１４が形成される。この係止孔１４には、側板１５の内側に形成された鉤部１６が係止されて、鍔部１２Ｂに側板１５が着脱自在に装着されるようになっている。鍔部１２Ｂの外面には、係止孔１４より内周側に環状突部１７が形成され、側板１５の内側面に当接されるようになっている。軸取付部材１１の端面には、ワッシャを介してねじ１８が螺装され軸部材１２が軸取付部材１１から脱落するのを阻止するようになっている。側板１５の外面１５Ａは平坦に形成された意匠面となっている。   Locking holes 14 are formed in the flange portion 12B of the shaft member 12 at equal intervals on the outer peripheral side. A hook 16 formed inside the side plate 15 is locked in the locking hole 14, and the side plate 15 is detachably attached to the hook 12B. An annular protrusion 17 is formed on the outer surface of the flange portion 12 </ b> B on the inner peripheral side from the locking hole 14, and comes into contact with the inner surface of the side plate 15. A screw 18 is screwed on the end surface of the shaft mounting member 11 via a washer so as to prevent the shaft member 12 from falling off the shaft mounting member 11. The outer surface 15A of the side plate 15 is a design surface formed flat.

次に、上記実施例に係る双輪キャスタ２の作用について説明する。上記実施例に係る双輪キャスタ２は、キャスタ本体３の貫通孔１０に軸取付部材１１を挿通し、軸取付部材１１の両端部をそれぞれ、キャスタ本体両側３Ａ、３Ｂから突出させる。次に、軸部材１２、１２の円筒部１２Ａ、１２Ａに車輪５Ａ、５Ｂを装着した後、軸部材１２、１２を軸取付部材１１の突出部１１Ａ、１１Ｂに嵌め入れ、ねじ１８で固定する。そして、鍔部１２Ｂに側板１５を取り付け、双輪キャスタ２の組み付けが完了する。このようにして組み付けられた双輪キャスタ２は、車軸である固定軸１１、１２が固定されているので、鍔部１２Ｂに取り付けられた側板１５は回転することがなく、常に固定した状態が保たれる。このため、側板１５は表面を意匠面として用いた場合、たとえ、双輪キャスタが走行中であっても、意匠面が損なわれることがなく、走行時、停止時に拘わらず意匠面を静止させて保持できる。   Next, the operation of the twin wheel caster 2 according to the above embodiment will be described. In the twin-wheel caster 2 according to the above-described embodiment, the shaft mounting member 11 is inserted into the through hole 10 of the caster body 3, and both end portions of the shaft mounting member 11 are protruded from the both sides 3A and 3B of the caster body. Next, after attaching the wheels 5A and 5B to the cylindrical portions 12A and 12A of the shaft members 12 and 12, the shaft members 12 and 12 are fitted into the projecting portions 11A and 11B of the shaft mounting member 11, and fixed with screws 18. And the side board 15 is attached to the collar part 12B, and the assembly | attachment of the twin-wheel caster 2 is completed. Since the fixed shafts 11 and 12 that are axles are fixed to the twin-wheel caster 2 assembled in this way, the side plate 15 attached to the flange portion 12B does not rotate and is always fixed. It is. For this reason, when the surface of the side plate 15 is used as a design surface, even if the twin-wheel caster is running, the design surface is not damaged, and the design surface is held stationary regardless of whether it is running or stopped. it can.

図５ないし図８はそれぞれ、本発明の第２の実施例に係る双輪キャスタ２２を示すもので、この第２の実施例に係る双輪キャスタ２２は、上記第１の実施例に係る双輪キャスタ２が、固定軸４を軸取付部材１１と軸部材１２とにより構成し、軸部材１２を円筒部１２Ａとこの円筒部１２Ａ外端に一体に形成された鍔部１２Ｂとにより構成しているのに対し、固定軸２４を軸取付部材３１と環状軸部材３２とにより構成し、軸取付部材３１の突出端に、別体の円板状側板装着部材３３を取り付けた点が異なっている。   FIGS. 5 to 8 show a twin-wheel caster 22 according to the second embodiment of the present invention. The twin-wheel caster 22 according to the second embodiment is the same as the twin-wheel caster 2 according to the first embodiment. However, the fixed shaft 4 is composed of the shaft mounting member 11 and the shaft member 12, and the shaft member 12 is composed of the cylindrical portion 12A and the flange portion 12B integrally formed on the outer end of the cylindrical portion 12A. In contrast, the fixed shaft 24 is constituted by a shaft mounting member 31 and an annular shaft member 32, and a different disk-shaped side plate mounting member 33 is mounted on the protruding end of the shaft mounting member 31.

すなわち、第２の実施例に係る双輪キャスタ２２は、断面非円形の貫通孔３０が左右に貫通するキャスタ本体２３と、このキャスター本体２３に回転自在に支持された車輪２５Ａ、２５Ｂとを備えている。貫通孔３０は、縦断面形状が上下で互いに向き合う円弧状部３０Ａ、３０Ｂとのこれら円弧状部３０Ａ、３０Ｂの上下で向き合う端部同士を直線３０Ｃ、３０Ｄで平行に結んだ経方向の両端が切り欠かれた両端切り欠き円状に形成される。円弧状部３０Ａ、３０Ｂは、中心同一の真円の一部を形成している。固定軸２４の一部を構成する棒状の軸取付部材３１は、断面が貫通孔３０に合致して経方向の両端切り欠き円状に形成される。環状軸部材３２は、内部に軸取付部材３１両端の突出部３１Ａ、３１Ｂに嵌合される孔が形成され、外周が円形に形成される。軸取付部材３１は、貫通孔３０に挿通されると、キャスタ本体両側２３Ａ、２３Ｂから両端部がそれぞれ突出するようになっている。環状軸部材３２、３２は、軸取付部材３１の突出部３１Ａ、３１Ｂにそれぞれ嵌合して取り付けられる。このため、軸取付部材３１と環状軸部材３２、３２とは回動が阻止される一方、車輪２５Ａ、２５Ｂは軸孔２７を介して環状軸部材３２、３２に回動自在に嵌装されるようになっている。   That is, the twin-wheel caster 22 according to the second embodiment includes a caster body 23 through which a through-hole 30 having a non-circular cross section penetrates to the left and right, and wheels 25A and 25B rotatably supported by the caster body 23. Yes. The through-holes 30 have longitudinal cross-sectional ends that are opposite to each other in the vertical direction, and the opposite ends of the arc-shaped portions 30A and 30B facing each other in the vertical direction are connected in parallel by straight lines 30C and 30D. It is formed in a circular shape with both ends cut out. The arc-shaped portions 30A and 30B form a part of a perfect circle with the same center. The rod-shaped shaft attachment member 31 that constitutes a part of the fixed shaft 24 has a cross-sectional shape that matches the through-hole 30 and is formed in a circular cutout shape in both longitudinal directions. The annular shaft member 32 is formed therein with holes that are fitted into the protruding portions 31A and 31B at both ends of the shaft mounting member 31 and has a circular outer periphery. When the shaft mounting member 31 is inserted into the through hole 30, both end portions protrude from the caster body both sides 23A and 23B. The annular shaft members 32 and 32 are fitted and attached to the protruding portions 31A and 31B of the shaft mounting member 31, respectively. Therefore, the shaft attachment member 31 and the annular shaft members 32 and 32 are prevented from rotating, while the wheels 25A and 25B are rotatably fitted to the annular shaft members 32 and 32 via the shaft holes 27. It is like that.

軸取付部材３１には、環状軸部材３２、３２の外側にそれぞれ、円板状の側板装着部材（側板装着部）３３が取り付けられる。側板装着部材３３には、外周縁に等間隔を隔てて係止孔３４が形成される。この係止孔３４には、側板３５の内側に形成された鉤部３６が係止されて、側板装着部材３３に側板３５が着脱自在に装着されるようになっている。側板装着部材３３の外面には、係止孔３４より内周側に環状突部３７が形成され、側板３５の内側面に当接されるようになっている。側板３５の外面１５Ａは緩やかな曲面に形成された意匠面となっている。   A disk-shaped side plate mounting member (side plate mounting portion) 33 is mounted on the shaft mounting member 31 on the outside of the annular shaft members 32 and 32, respectively. The side plate mounting member 33 is formed with locking holes 34 at equal intervals on the outer periphery. A hook 36 formed inside the side plate 35 is locked in the locking hole 34, and the side plate 35 is detachably mounted on the side plate mounting member 33. On the outer surface of the side plate mounting member 33, an annular protrusion 37 is formed on the inner peripheral side from the locking hole 34, and comes into contact with the inner surface of the side plate 35. The outer surface 15A of the side plate 35 is a design surface formed in a gently curved surface.

上記第２の実施例に係る双輪キャスタ２２は、叙上の如く構成されているので、キャスタ本体２３の貫通孔３０に軸取付部材３１を挿通し、軸取付部材３１の両端部をそれぞれ、キャスタ本体両側２３Ａ、２３Ｂから突出させる。次に、環状軸部材３２、３２を車輪２５Ａ、２５Ｂの軸孔に装着した後、環状軸部材３２、３２を軸取付部材３１の突出部３１Ａ、３１Ｂにそれぞれ嵌め入れ、側板装着部材３３を軸取付部材３１の、環状軸部材３２、３２より外側に取り付け、図示しない固定具で固定する。側板装着部材３３に側板３５を取り付け、双輪キャスタ２２の組み付けが完了する。このようにして組み付けられた双輪キャスタ２２は、車軸である固定軸２４が固定されているので、上記第１の実施例と同様に、側板装着部材３３に取り付けられた側板３５は回転することなく、常に固定した状態が保たれる。なお、上記第２の実施例では、貫通孔３０の断面形状を両側切り欠き円状に形成して軸取付部材３１をこの断面形状に合致させて形成しているが、これに限られるものではなく、真円の一部を切り欠いた形状としてもよいし、小判形状（楕円形状）としてもよい。   Since the twin-wheel caster 22 according to the second embodiment is configured as described above, the shaft mounting member 31 is inserted into the through-hole 30 of the caster body 23, and both ends of the shaft mounting member 31 are caster. Project from both sides 23A and 23B of the main body. Next, after the annular shaft members 32 and 32 are mounted in the shaft holes of the wheels 25A and 25B, the annular shaft members 32 and 32 are fitted into the projecting portions 31A and 31B of the shaft mounting member 31, respectively, and the side plate mounting member 33 is pivoted. The attachment member 31 is attached to the outside of the annular shaft members 32, 32, and is fixed with a fixture (not shown). The side plate 35 is attached to the side plate mounting member 33, and the assembly of the twin wheel caster 22 is completed. Since the fixed shaft 24 which is an axle is fixed to the twin-wheel caster 22 assembled in this way, the side plate 35 attached to the side plate mounting member 33 does not rotate as in the first embodiment. , Always kept fixed. In the second embodiment, the cross-sectional shape of the through hole 30 is formed in a notch shape on both sides and the shaft mounting member 31 is formed so as to match this cross-sectional shape. However, the present invention is not limited to this. Alternatively, a shape obtained by cutting out a part of a perfect circle may be used, or an oval shape (elliptical shape) may be used.

次に、上記第２の実施例に係る双輪キャスタ２２の変形例について説明する。この変形例に係る双輪キャスタ４２は、上記第２の実施例に係る双輪キャスタ２２が、固定軸２４を軸取付部材３１と環状軸部材３２とにより構成しているのに対し、図１０に示すように、環状軸部材３２に代えてベアリング（軸受部材）５２を用いた点が異なっている他は上記第２の実施例とほぼ同一の構成を備えている。この変形例に係る双輪キャスタ４２では、固定軸４４を軸取付部材３１とベアリング５２とにより構成しているので、双輪キャスタ４２の強度向上を図ることができる。   Next, a modified example of the twin wheel caster 22 according to the second embodiment will be described. A twin-wheel caster 42 according to this modified example is shown in FIG. 10, whereas the twin-wheel caster 22 according to the second embodiment has a fixed shaft 24 constituted by a shaft mounting member 31 and an annular shaft member 32. As described above, the second embodiment is substantially the same as the second embodiment except that a bearing (bearing member) 52 is used instead of the annular shaft member 32. In the twin-wheel caster 42 according to this modification, the fixed shaft 44 is constituted by the shaft mounting member 31 and the bearing 52, so that the strength of the twin-wheel caster 42 can be improved.

なお、上記変形例では、環状軸部材３２に代えてベアリング５２を用いた例を示しているがこれに限られるものではなく、上記第１の実施例の軸部材１２の円筒部１２Ａと車輪５Ａ、５Ｂとの間にベアリングを配設するようにしてもよい。   In the above modification, an example in which the bearing 52 is used instead of the annular shaft member 32 is shown, but the present invention is not limited to this, and the cylindrical portion 12A and the wheel 5A of the shaft member 12 of the first embodiment are not limited thereto. And a bearing may be provided between 5B and 5B.

２ 双輪キャスタ
３ キャスタ本体
３Ａ、３Ｂ キャスタ本体両側
４ 固定軸
５Ａ、５Ｂ 車輪
６ 旋回軸
１２Ｂ 鍔部（側板装着部）
１５ 側板 2 Twin-wheel caster 3 Caster body 3A, 3B Both sides of caster body 4 Fixed shaft 5A, 5B Wheel 6 Rotating shaft 12B Hook (side plate mounting portion)
15 Side plate

Claims (4)

キャスタ本体とこのキャスタ本体両側に車軸を介して回転自在に支持された車輪とを備え、被取付体に旋回軸を介して旋回可能に固定される双輪キャスタにおいて、
車輪の外側に回転しない側板を設けたことを特徴とする双輪キャスタ。 In a two-wheel caster that includes a caster body and wheels that are rotatably supported on both sides of the caster body via an axle, and is fixed to the mounted body so as to be pivotable via a pivot shaft.
A double-wheel caster characterized in that a side plate that does not rotate is provided outside the wheel. 車軸を、キャスタ本体両側から突出して設けた固定軸により構成し、この固定軸の突出部外側には、側板が装着される側板装着部を設けるとともに、
キャスタ本体には、左右方向に断面非円形状の貫通孔を形成し、
固定軸を、この貫通孔に合致して形成されるとともにこの貫通孔に挿通され両端部をキャスタ本体両側から突出させた軸取付部材と、軸取付部材の突出部に嵌る中空孔が形成された円筒部とこの円筒部の外端に鍔状に形成された側板装着部とを有する軸部材とを備えて構成したことを特徴とする請求項１に記載の双輪キャスタ。 The axle is constituted by a fixed shaft that protrudes from both sides of the caster body, and a side plate mounting portion on which the side plate is mounted is provided outside the protruding portion of the fixed shaft,
In the caster body, a through hole with a non-circular cross section is formed in the left-right direction,
A fixed shaft is formed in conformity with the through hole, and a shaft mounting member that is inserted through the through hole and protrudes from both sides of the caster body, and a hollow hole that fits into the protruding portion of the shaft mounting member is formed. The twin-wheel caster according to claim 1, comprising a shaft member having a cylindrical portion and a side plate mounting portion formed in a bowl shape at an outer end of the cylindrical portion. キャスタ本体には、左右方向に断面非円形状の貫通孔を形成し、
固定軸を、この貫通孔に合致して形成されるとともにこの貫通孔に挿通され両端部をキャスタ本体両側から突出させた軸取付部材と、軸取付部材の突出部に嵌る孔が形成された環状軸部材とを備えて構成し、軸取付部材には、環状軸部材の外側に板状の側板装着部材を取り付けたことを特徴とする請求項１に記載の双輪キャスタ。 In the caster body, a through hole with a non-circular cross section is formed in the left-right direction,
A fixed shaft is formed in conformity with the through-hole, and a shaft mounting member inserted through the through-hole and projecting at both ends from both sides of the caster body, and an annular formed with a hole that fits into the projecting portion of the shaft mounting member The twin-wheel caster according to claim 1, wherein a plate-like side plate mounting member is attached to the outside of the annular shaft member. 貫通孔は、断面が円の一部を切り欠いた切り欠き円に形成されるとともに、
環状軸部材を軸受部材により構成したことを特徴とする請求項３に記載の双輪キャスタ。 The through hole is formed in a cutout circle with a cross section cut out of a part of the circle,
The twin-wheel caster according to claim 3, wherein the annular shaft member is constituted by a bearing member.
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