IL261865A

IL261865A - Smart trolley wall connector

Info

Publication number: IL261865A
Application number: IL261865A
Authority: IL
Original assignee: B M Gue Dibect Ltd
Priority date: 2018-09-20
Filing date: 2018-09-20
Publication date: 2019-02-28
Also published as: IL261865B

Description

SMART TROLLEY WALL CONNECTOR Field of Invention The present invention relates to the field of stainless steel trolley’s left to right wall tube connectors. In particular, the present invention relates to a tube connector with a “false bolt”. More particularly, the present invention relates to a round tube connector consists of two “false bolts”, connecting on both sides to two square tubes, that are a part of a left/right wall of a trolley, making a strong, more stable, no welding required connection between those two perpendicular square tubes.

Background of Invention Stainless steel trolleys usually consist of a left and right walls made out of square tubes that need to be connected one to the other in order to form a whole trolley. That connection is mostly made using a round tube. In this case we offer a simple solution for that connection between the round tube and the square tube. A proper connection between the two can be made by using a bolt or by welding. Prior bolt or welding connectors have several drawbacks associated with them. For instance, the bolt may not be tight enough, making a loose connection. Additionally, welding requires proper gear, space and man power which may lengthen the process and make it more expensive.

It is therefore an object of the present invention to provide a tube connector that enables a strong, tight connection and which overcomes the difficulties described herein above.

It is an additional object of the present invention to provide a tube connector that is inexpensive to manufacture and requires little or no skills to operate while providing a smart and easy assembling.

Additional objects and advantages of the present invention are described in detail herein below.־2־ Summarv of Invention The present invention relates to a round to square tubes’ connector, comprising a special “false bolt” that is made out of three gradually small different diameters. The “false bolt” is fully welded on both sides of a hollow round tube, creating an apparent full rod tube. The round tube than enters a double size (frontal and rear) hole that was pierced in a square tube (holding a right/ left wall of a trolley), in such manner that allows the round tube to “lock” on to the square tube with an exterior Nyloc nut. Furthermore, the special structure of the bolt prevents the square tube from being distorted while tightening the Nyloc nut and by making a small inflation mark on the square tube, signaling the assembler that the connection has been properly tightened.

Brief Description of the Figures fin the drawings): - Fig. 1 shows a schematic frontal and rear view of the square tube with the double size pierced holes.

- Fig. 2 shows a schematic side view of the three diameter gradually small bolt.

־ Fig. 3 shows an imaging view of the three diameter gradually small bolt.

־ Fig. 4 shows a schematic side view of the round tube inserted with two bolts on both sides.

- Fig. 5 shows a schematic an imagery of the nyloc nut.

Fig. 6 shows a cross sectional view of the round tube connected to the square tube.

- Fig. 7 shows a schematic side view of the round tube connected to the square tube.

- Fig. 8 shows a general exploded view of all the components.

- Fig. 9 shows a schematic perspective view of an assembled stainless steel rail trolley using the present invention־3 ־ Measurements are for illustrated purposes only (comprising a 25X25mm 1.25T square tube and 22.22mm (7/8”OD) 1.25T round tube). Measurements are in millimeters.

Detailed Description of the Preferred Embodiments Conventional prior tube connectors in steel trolleys typically require the use of welding or a screw, making either an expensive process or a weak connection. The present invention provides a hollow round tube which transforms into a full rod tube by welding in a false three diameter bolt (reducing the weight of the round tubes and therefor reducing the weight of the trolley itself), and leaves a strong, secure and informative (allows the assembler to recognize when the connection is at its most) connection by entering the square tube in a welding free manner.

Although it is understood that an ST steel trolley, consisting of the present invention, may include more than one round to square tube’s connections, for the sake of clarity and simplicity, two single square tubes having only one entering and exiting hole is shown and described herein (figure 4). Moreover, all sizes illustrated in the figures are examples of optional designs of the components of the present invention, and should not be considered limiting or exclusive.

Moreover, it is understood that any embodiment (110-140) are oriented essentially horizontally with respect'to the ground.-4- 1. The first embodiment of the tube connector in the present invention, are two square tubes that are shown schematically in Fig.l (25X25mm 1.25T square tube in this instance, which will be referred to in the drawings as “100”). They represent the two trolley walls as described before. Those square tubes include a pierced hole, in what is considered, the outer side of the tube (D15mm in this instance, which will be referred to in the drawings as “101”), and a smaller pierced hole on the inner side of the tube (Dllmm in this instance, which will be referred to in the drawings as “102”), for a proper entering (inner side) and exiting (outer side) of the False Bolt (as will be explained ahead). 2. Referring to Figs 24־, the second embodiment is a False Bolted Middle Round Tube which requires: 2.1 A round tube (a 22.22mm or a 7/8”OD round tube in this instance, which will be referred to in the drawings as “120”). 2.2 A false bolt (which will be referred to in the drawings as “110”), comprises of 3 components: two different diameters round tubes (which will be referred to in the drawings as, “111” for the thicker in diameter tube, and “112” for the thinner in diameter tube) and a small bolt- a regular bolt that will have a narrow diameter (in this instance- M10, which will be referred to in the drawings as “113”).

The thicker tube (111) will always, in any size version, be slightly smaller in diameter (0.5mm less) than the middle round tube (120) (D 19.4mm in this instance).

The thinner tube (112), will always be, in any size version, smaller in diameter (1.00mm less) than the pierced inner side־5־ hole in the square tube (102) ־ (D14mm in this instance) and will always be shorter in length (3.5mm less) than the square side size of the square tube (100) - (in this case 21.5mm in length).

Welding these three objects together respectively- the thicker tube (111) is welded to the thinner tube (112), which on its other side is welded to the Small Bolt (113), will form a strong, three diameters False Bolt (110) as seen particularly in Fig. 2-3.

A False Bolted Middle Round Tube is created by welding two false bolts (110) at each side of the middle round tube (120) as Fig. 4 schematically show. The thicker tube (111) slides perfectly into the middle round tube (120) and welded in, thus creating a strong connection as shown in Fig. 4.

In prior round tubes’ connectors, a full rod tube was used for establishing a stronger connection. The False Bolted Middle Round Tube, which is basically a hollow tube, can act as a full rod tube, especially strength wise, while it keeps on being a light weighted and less expensive hollow round tube. ! 3. The third embodiments are a Washer bolt (which will be referred to in the drawings as “130”), and a Nyloc Nut bolt (which will be referred to in the drawings as “140”) as Fig. 5 shows.

Referring to Fig.6-9, the False Bolted Middle Round Tube is inserted into the pierced square tube (100) as seen in Fig.6-7. The bolt (113) and thinner tube (112) fit perfectly through the inner side hole (101) in the square tubes (100) - Fig.6-7. The thinner tube (112) does not fit the small diameter hole (101) in the outer side of the square tube (100), situating the thinner tube (112) right in the center of the square tube (100) as seen in Fig. 7. The thicker tube (111) cannot enter-6- the wide diameter hole (102) in the square tube (100) allowing the False Bolted Middle Round Tube to settle right in front of the square tube (100) as seen in Fig. 8.

Fig. 68־ also shows the Washer (130) and Nyloc nut (140) that are placed and bolted to the false bolt (110) on each side. By tightening the Nyloc nut (140), the assembler secures the false bolt (110) onto the square tube (100) allowing a strong, weld free connection between the False Bolted Middle Round Tube and the square tube (100). In previous connectors a Nyloc nut had to be welded onto the tube while exposing the Nyloc nut’s plastic body to heat and therefore causing it to melt. Tightening the Nyloc nut creates a small inflation mark on the square tube (100), signaling the assembler that the tube has been properly tightened- Fig. 7.

Fig. 8 shows a general exploded view of all the components and explains how the each embodiment takes a role in this special connector. Fig. 9 gives an idea of how such connections can take part in assembling a stainless steel trolley, in this case a rail trolley.

It is understood that the above description of the embodiments of the present invention are for illustrative purposes only, and is not meant to be exhaustive or to limit the invention to the precise form or forms disclosed, as many modifications and variations are possible. Such modifications and variations are intended to be included within the scope of the present invention as defined by the accompanying claims.-7- 261865/2

Claims

Claims:

1. A connection assembly comprising: a round tube having two open ends; two false bolt assemblies, each of said false bolt assemblies secured in one of said open ends, wherein each of said false bolt assemblies comprises a first round portion, a second round portion extending axially from said first round portion, said second round portion being smaller in diameter than said first round portion, and a threaded bolt shaft extending axially from said second round portion, said threaded bolt shaft being smaller in diameter than said second round portion; and a trolley comprising a side wall square tube formed with a through hole, wherein said through hole has a first diameter on a first side of said square tube which is smaller than the diameter of said first round portion, and said through hole has a second diameter on a second side of said square tube opposite to said first side, which is smaller than the diameter of said second round portion.

2. The connection assembly according to claim 1, wherein said trolley has two such square tubes and said round tube is connected to said two square tubes by each of said false bolt assemblies, wherein for each of said false bolt assemblies: said second round portion passes through said first diameter on the first side of said square tube, and said first round portion abuts against the first side of said square tube; and said threaded bolt shaft extends through said second hole of said square tube at the second side of said square tube, and a threaded fastener secures said threaded bolt shaft against the second side of said square tube.

3. The connection assembly according to claim 2, wherein said threaded fastener comprises a nyloc nut. 1/8 261865/2 100 1012/8 261865/23/8 261865/24/8 261865/2 1135/8 261865/26/8 261865/2 120 Figure 6 120 Figure 77/8 261865/2 1308/8 261865/2