DE1809712U - ROLLER WITH CLAMPING SLEEVE, IN PARTICULAR SPREAD SLEEVE. - Google Patents

Description

DATE and DICTIONAL INDICATORS ι
6MEETS

December 22nd, 1959 - Dr.F./Hß.-

lente roles society m.b.H. & Co., Tente / Bhld.

Caster with a socket, especially an expansion socket.

The invention relates to a roller with a device for releasable attachment to apparatus, appliances, furniture and the like. It does not matter whether the foot of these objects made of metal or wood and are tubular or solid with a mounting hole.

For the caster bracket are according to the different Types of fastening more or less complicated constructions known. Are the feet of the object to be equipped with castors made of solid inelastic material like e.g. metal, one can put into the fastening- hole in the device base, cut an internal thread and use a roller with its vertical bearing pin designed in a known manner as a threaded bolt and is simply screwed into the mounting hole.

If, on the other hand, the feet of the object to be provided with castors are made of solid material such as wood, so you usually first drive a bearing sleeve into the mounting hole of the device base and only then to store the back bolt of the roller fork in this.

In the case of hardwood or ears, there are castor mounts

known that a rubber inner sleeve or an expansion sleeve have that after insertion into the mounting hole or the pipe end of the device base increased in diameter by means of an axially moving expansion cone and thereby be clamped.

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The firing refers to a roller with a Bracket for releasable attachment in a device or furniture foot or the like cylindrical socket or expansion socket or the like. has that when clamping a torsional stress to its axis is subject to and is preferably made of plastic, especially polyamide »

In such caster mounts it is a disadvantage that the cylindrical clamping or expanding sleeve when tightening the expansion screw or the like. rotates in the mounting hole and consequently the clamping effect is not achieved can be..

The innovation eliminates this inconvenience by equipping the cylindrical clamping socket with a concentric safety device will.

The new Laufroll ©, which is a bracket in the known way for releasable attachment in a device or furniture foot or the like. has and one to be introduced into the mounting hole has cylindrical clamping sleeve or expanding sleeve, which when clamped a torsional stress about its axis is subject and is preferably made of plastic, in particular polyamide, is according to the basic idea of the invention characterized in that the cylindrical clamping sleeve or, expansion sleeve on its circumference an anti-leakage device in the form of an increase in the order of magnitude of several tenths of a millimeter in thickness that when the Clamping sleeve in the mounting hole has a slight york clamp causes and the co-rotation of the Clamping sleeve prevented when tightening »

Preferably it is the concentricity lock around an annular adhesive bead on the circumference of the clamping sleeve or expansion sleeve is arranged and one by several Tenth of a millimeter larger outside diameter than the socket outside diameter and consequently with Insertion of the clamping sleeve into the fastening hole causes a slight pre-clamping and the adhesive effect Prevents the clamping socket from rotating at the same time as it is tightened.

It is particularly advantageous if one has such a concentricity lock and in particular such an annular one Adhesive bead arranged at the lower end of the socket joint. This will prevent the joint sleeve from being pushed into the Fastening hole not impaired, because the concentricity protection is only available towards the end of the insertion is effective and the pre-clamping is brought about by their Adhesive effect the turning of the joint socket when clamping is prevented.

According to a further development of the invention, which has proven to be particularly effective, the clamping sleeve or expanding sleeve is slit at the lower end where the concentricity fuse is arranged, slit at a shallow depth, expediently several times, e.g. across, cross. When inserting the sleeve in the Bebestigungsbohrung or the pipe end of the G ^e councils foot check the socket end suppressed due to the increase provided on the circumference somewhat together and thus remains sufficiently adhere firmly under tension in the fastening bore. This pre-clamping is sufficient to prevent the sleeve from turning when tightening.

In the drawings are exemplary embodiments of the innovation based on a roller bracket with expanding sleeve, the could also be a socket, sohematically illustrated;

Pig. 1 shows a swivel castor with an expanding socket attachment in a wooden device foot,? / Above the castor support is shown in section »

Pig.2 only shows the expansion socket of 3Pig.1 in axial section, as a plastic injection molded part.

Pig.3 is the top view of Pig.2.

! ig.4 is an axial section through a roller bracket with expansion socket fastening in a tubular device base.

_ _t 10 The roller shown in Pig. 1 is a steering transport · =

roll j in which the roller housing from the back bearing 1 - And the roller fork 2 is formed. In the fork 2 is

The wheel 4 is mounted by means of a through axle 3. On the back bearing 1 is the bearing pin 5? which is also referred to as a back bolt, fastened by means of a notch or in some other way. The bearing pin 5 is here a threaded bolt for which a normal hexagon screw or the like. can be used. By means of a roller holder, which has a spreader - device, the roller is clamped in the mounting hole 6 of the device foot 7, which is made of wood here.

ί According to Piguren 1 to 3, the spreading device has

the roll holder an expanding sleeve 8, which is made of polyamide * is injected. At the spreading point 9? the one at the top

The end 10 of the expansion sleeve 8 is located, the sleeve 8 is slotted several times. The inner sleeve bore serving as a journal bearing 11 is narrowed in the area of the upper socket end 10. At the constriction point 12, the inner bore 11 is hollow conical so that the ball 13a placed in the inner bore 11 has only line contact »by means of a

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small snap ring inserted into the inner bore 11 the ball 13a, which serves as a loose expansion body, is secured against falling out even when the inner bore 11 is still without trunnion 5. The inner bore 11 of the expansion sleeve 8 "has an inner joint 15. When screwing in of the bearing pin 5 designed as a threaded bolt, its free end 16 comes into point contact with the ball 13a.

The clamping effect is achieved by inserting the bearing journal 5, which is designed as a threaded bolt, into the expanding sleeve 8 continue to screw in vigorously, which can be achieved by applying an open-end wrench at the hexagonal neck 17 slightly falsified can be. The bearing pin 5 acts as an axial one

t push pin on the expansion ball 13a, which in turn

presses on the constriction point 12 and the apart-

15 pounds spread the same effects, resulting in an immovable

Firm seat of the roller bracket in the mounting hole 6 leads.

When clamping, which is done by screwing the threaded bearing pin 5 into the clamping and expanding sleeve 8, this is subject to torsional stress. So that the cylindrical socket 8 initially «when at the spreading point 9 clie contact pressure is not yet sufficiently effective, has not been turned is, the clamping and expanding sleeve 8 is at its lower end 18 on its periphery 19 with a concentricity lock equipped ^ which consist of a ring-shaped adhesive ysralst 20 consists of an outer diameter several tenths of a millimeter larger than the outer diameter of the sleeve 8 owns. In addition, the sleeve 8 is also slotted several times at its lower end 18 to a shallower depth. Consequently When the sleeve 8 is pushed into the fastening hole 6 of the device base 7, a noticeable amount occurs at the end Pre-clamping, the adhesive effect of which is the turning of the socket 8 prevented by!

In the case of the I ¹ Ig.4, the roller bearing is clamped in the cavity β of the drilling end of a tubular device foot 7. which γοη an AIoschlußring 21 is comprised in a known manner. The expansion body 13b loosely inserted into the inner bore 11 of the expansion sleeve 8 here has the shape of a teardrop and is prevented from falling out by small tongues 14a that jump into the inner bore 11 and were injected onto the plastic sleeve 8 when the plastic sleeve 8 was injected with the printing end 16 formed as a threaded bolt bearing pin 5 only point-like contact. So that the expansion body 13 has only line contact with the constriction point 12 of the expansion sleeve 8 during the entire expansion path, the constriction point 12 of the inner bore is arched in the shape of a nozzle ring-shaped, bead-like elevation 20, which is in the order of magnitude of several tenths of a millimeter thick and causes a slight pre-clamping when inserting the sleeve 8 into the Eohrhöhlung 6 and prevents the expansion sleeve 8 to be clamped from turning when tightening.

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Claims (12)

- 7 solidarity claims 1. Caster with a bracket for detachable attachment In a device or furniture foot or the like. That a cylindrical socket to be inserted into the mounting hole which is subject to torsional stress around its axis when clamped and is preferably made of plastic, in particular polyamide, characterized in that the cylindrical clamping sleeve (8) on its circumference (19) a concentricity protection in the form of an increase (20) of the Has an order of magnitude of several tenths of a millimeter in thickness when inserting the clamping sleeve (8) into the fastening hole (6) causes a slight pre-clamping and, due to the adhesive effect, rotates the joint socket (8) prevented when tightening. 2. Caster with a bracket for detachable attachment in a device or furniture foot or the like, which has an expanding sleeve to be inserted into the mounting hole, which is subject to torsional stress around its axis when clamped and is preferably made of plastic, in particular polyamide, characterized in that the cylindrical expansion sleeve on its circumference (19) a dog safety device in the form of an increase (20) of the Has a thickness of several tenths of a millimeter when the expansion sleeve (8) is inserted into the Fastening hole (6) causes a slight yoke lock and the adhesive effect means that the expansion socket (.8) also rotates prevented when tightening. 3 · Caster with a bracket for detachable fastening; supply in a device or furniture foot or the like., the one in the fastening hole has clamping sleeve to be introduced, the plague of a torsional stress around theirs Axis is subject and is preferably made of plastic, in particular polyamide, characterized in that the clamping sleeve (8) on its periphery (19) a concentricity protection in the form of an annular adhesive bead (20) which has an outer diameter which is several tenths of a millimeter larger than the sleeve outer diameter and when inserting the clamping sleeve (8) into the fastening hole (6) causes a slight pre-clamping and by adhesive effect prevents the clamping sleeve (8) from turning when tightening α . (15 4. Caster with a bracket for detachable attachment In a device or furniture foot or the like. That one in the mounting hole has to be introduced expansion sleeve, which when clamped to a torsional stress ι its axis is subject and preferably made of plastic, in particular polyamide, characterized in that the expansion sleeve has a concentric locking device on its circumference (19) in the form of an annular adhesive bead (20) which is several tenths of a millimeter larger <t outside diameter than the socket outside diameter and when inserting the expansion sleeve (8) into the fastening * Bore (6) causes a slight pre-clamping and through Adhesive effect the turning of the expansion sleeve (8) when tightening prevented. 5. roller mean that drives with a holder for detachable fastening in a G or ^e ο.dgl furniture foot. Having a in the Befest igungsbolirung Kiemmuffe be employed, the subject during clamping a Drehbeanspruehung about its axis and preferably made of plastic, in particular polyamide, characterized in that the clamping sleeve (8) at its lower end (18) on the circumference (19) has a concentric locking device in the form of an annular adhesive bead (20) which has an outer diameter several tenths of a millimeter larger than the outer diameter of the sleeve and when the clamping sleeve is inserted (8) causes a slight pre-clamping in the fastening hole (6) at the end and prevents the clamping sleeve (8) from turning when tightening. 6. roller having a holder for detachable fastening in a device or furniture foot ο.dgl., Which has a fastening bore in the B ^s to be used Expanding socket which is subject during the clamping of a torsional stress about its axis and preferably made of plastic, in particular polyamide, is, characterized in that the expanding sleeve at its lower end (18) on the circumference (I9) has a concentric locking device in the form of an annular adhesive bead (20), which has an outer diameter several tenths of a millimeter larger than the outer diameter of the sleeve and when the The expansion socket (8) in the fastening hole (6) at the end causes a slight pre-clamping and prevents the expansion socket (8) from turning when tightened. - 10 - - 10 - 7. Caster with a bracket for releasable attachment in a device or furniture foot or the like. Which one in has the fastening hole to be used clamping sleeve, which when clamped a torsional stress to their Axis is subject and is preferably made of plastic, in particular polyamide, characterized in that the clamping sleeve (8) at its lower end (18) a concentricity protection has and for this purpose both slotted at its lower end (18) and on the circumference (19) mi "b an annular adhesive bead (20) is equipped with an outer diameter several tenths of a millimeter larger than the sleeve outer diameter and when inserting the clamping sleeve (8) into the fastening hole (6) causes a slight pre-clamping at the end and, due to the adhesive effect, also turns the clamping sleeve (8) when tightening prevented. 8. Caster with a bracket for releasable attachment in a device or furniture foot or the like. Which one in the mounting hole has expanding sleeve to be used which, when clamped, is subject to torsional stress about its axis is subject and is preferably made of plastic, in particular polyamide, characterized in that the expansion sleeve (8) a concentricity lock at its lower end (18) has and for this purpose both slotted at its lower end (18) and on the circumference (19) with an annular Adhesive bead (20) is equipped with an outer diameter several tenths of a millimeter larger than that Has the outer diameter of the socket and when the expansion socket (8) is pushed into the fastening hole (6) at the end causes a slight pre-clamping and prevents the expansion sleeve (8) from turning when tightening . - 11 - Ί - 11 - 9. For a roller that has a holder for releasable attachment in a device or furniture foot or the like, a clamping sleeve to be inserted into the fastening hole, when clamping a torsional stress around its axis is subject and is preferably made of plastic, in particular polyamide, characterized in that the clamping sleeve (8) a concentricity lock at its lower end (18) and for this purpose both slotted at its lower end (18) as well as on the circumference (19) is equipped with an annular adhesive bead (20) which increases by several tenths Millimeter larger outside diameter than the socket outside diameter and when the clamping sleeve (8) is pushed into the fastening hole (6) at the end there is a slight pre-clamping and prevents the clamping sleeve (8) from turning when tightening. 10. For a roller that has a bracket for releasable attachment in a device or furniture foot or the like. having, an expansion sleeve to be inserted into the fastening hole, which is subject to torsional stress around its axis when clamped and is preferably made of plastic, in particular Polyamide, characterized in that the expanding sleeve (8) has a concentric locking device at its lower end (18) has and for this purpose both slotted at its lower end (18) and on the circumference (19) with an annular Adhesive bead (20) is equipped with an outer diameter several tenths of a millimeter larger than that Has the outer diameter of the socket and when the expansion socket (8) is pushed into the fastening hole (6) at the end causes a slight pre-clamping and by adhesive effect 3Ό prevents the expansion sleeve (8) from turning when tightening. - 12 - 11. For a roller that has a bracket for releasable attachment in a device or furniture foot or the like. has a socket to be inserted into the mounting hole
made of softer-free plastic such as polyamide or the like. when clamping a torsional stress around its axis is subject, characterized in that the clamping sleeve (8) has a concentricity lock at its lower inde (18) and for this purpose is both slotted at its lower end (18)
as well as around the circumference (19) with an annular adhesive bead (20) is equipped, which has an outer diameter several tenths of a millimeter larger than the sleeve outer diameter and when inserting the joint sleeve (8) in
the fastening hole (6) at the end causes a slight pre-clamping and the adhesive effect causes the Clamping socket (8) prevented when tightening. 12. For a caster that has a bracket for releasable attachment in a device or furniture foot or the like. has, an expanding sleeve to be inserted into the fastening hole made of plastic material such as polyamide or the like free of plastic mowers
subject, characterized in that the expansion sleeve
(8) a concentricity lock at its lower end (18)
has and for this purpose both at its lower end (18)
slotted and equipped with an annular adhesive bead (20) on the circumference (19), which has an outer diameter several tenths of a millimeter larger than the outer diameter of the socket and when the expansion socket is inserted
(8) into the mounting hole (6) at the end
Pre-clamping causes and the adhesive effect causes it to turn the expansion sleeve (8) prevents it from being tightened.