RU2224449C2 - Umbrella - Google Patents

Abstract

FIELD: light industry, in particular, traveling articles, such as collapsible umbrellas. SUBSTANCE: apparatus has fully automatic umbrella, which may be readily controlled with one hand. Umbrella has telescopic rod with spring arranged inside rod and adapted for opening of umbrella. One end of spring is fixed in handle and other end is secured in umbrella head. Spacer tube is positioned inside spring. End part of spacer tube is rigidly connected with umbrella head. Tubular member is put onto end part of spacer tube. One end of tubular member is provided with inward extending protrusion and other end is provided with outward extending protrusion. Said spring rests upon inwardly extending protrusion and additional spring rests upon outward extending protrusion. Opposite end of additional spring is pressed to umbrella head. EFFECT: simplified construction and convenient usage. 4 cl, 17 dwg

Description

 The invention relates to light industry and relates to travel accessories, namely personal items, in particular folding umbrellas.

 As you know, on a rainy day, it is advisable for everyone to have an umbrella to protect them from rain. But, as a rule, it doesn’t rain all day, and it may not rain at all, despite the weather forecast. Therefore, part of the time, or even most of the time, the umbrella is folded and carried in your hands, bag, bag, etc. In this case, it is desirable that he takes up as little space as possible. As a result of this, various designs of folding umbrellas in two additions, three additions, four additions and even five additions were developed. However, the more additions the umbrella has, the more complicated the structure, the greater the number of parts, less strength and less stability of the frame against the wind, in particular against wind turning.

 Among folding compact umbrellas, umbrellas in four additions were most widely used [1]. Their feature is a large number of joints between the levers and rods of the frame, resulting in the formation of backlashes and gaps. Because of this, the dome frame is not rigid and not stable against the wind. Elimination of backlash and gaps in the frame and stability against wind "turning" by the wind are provided mainly due to the appropriate cut and tension of the dome fabric, which is not always sufficient. This applies especially to the so-called umbrellas "full automatic", the opening of the dome which is carried out due to the multi-turn opening spring located inside the telescopic rod of the umbrella.

 At this point in the description, the applicant considers it necessary to pay particular attention to the following.

 To tension the dome fabric, it is desirable to have the maximum opening spring force at the end of the stem stroke when opening the dome. However, it is not possible to achieve this with four-fold umbrellas due to the fact that the telescopic rod, consisting of four tubes, is folded very short and it is not possible to put a “powerful” spring into it. Indeed, when the umbrella is opened and the telescopic rod is extended in existing structures, the opening spring is extended by about 3 times - from 150 mm to 450 ... 500 mm. To ensure this elongation, this opening spring should be sufficiently “soft”, but at the same time, the force at the end of the stroke of the telescopic rod is small. But at the same time, it still has to maintain sufficient force at the end of the stroke of the telescopic rod to tension the dome fabric.

 There are also umbrellas in three additions with a pair of elastic wire rods of circular cross section in the second stage of the umbrella frame. In umbrellas of this type, it is also desirable to have the greatest possible force of the opening spring at the end of the stroke of the stem when opening the dome.

 To clarify this, we dwell in more detail on the design of umbrellas of this type. As you know, in these umbrellas, the upper wire rod is forced to bend when the frame opens with a bulge upward. In this case, the umbrella dome frame is a prestressed structure in which all the backlashes and gaps are selected. This design is more resistant to wind. In addition, the umbrella dome has a more "pleasant" aesthetic rounded shape. As you know, with strong gusts of wind, the dome can be turned in the opposite direction. In this case, irreversible plastic deformation of rigid stamped levers and rods of the frame of ordinary umbrellas can occur. An umbrella with elastic wire rods is less susceptible to such deformations.

 An additional advantage is that the canopy of the umbrella folds out with the dry side of the fabric, which is more convenient for the user. However, to ensure the above advantages for such umbrellas in the “full automatic” version, an increased opening spring force is also required at the end of the stroke of the rod, since in addition to opening the frame itself, pulling the dome fabric, pulling the frame spring back, it is necessary to overcome the force necessary for the forced deformation of the wire rods . In this regard, it is necessary to install a more rigid opening spring, which in turn leads to the emergence of greater efforts during the final folding of the umbrella stem manually. This causes inconvenience to the user.

Thus, the common disadvantages of the above umbrellas are:
- increased efforts that must be applied to the user for the final folding of the umbrella stem manually;
- increased dimensions of the opening spring, and therefore the umbrella itself;
which are caused by the need to install an opening spring with high force, especially at the end of the stem stroke, due to the need to ensure that the opening spring performs its many functions in the design of the umbrella (opening the frame itself, tensioning the dome fabric, pulling the frame spring tension, forced deformation of the wire rods, etc. d.).

 A well-known umbrella, comprising a telescopic rod with an opening spring inside, one end of which is mounted in the handle, and the other in the head of the umbrella, and a spacer tube installed inside the opening spring [2].

 The aim of the invention is the intention to find a technical solution that allows you to create a spring-cable device for opening - folding the umbrella with increased force at the end of the stroke of the stem when opening the canopy of the umbrella without increasing the effort required for the final folding of the umbrella stem manually.

 This goal is achieved by the fact that in the umbrella, comprising a telescopic rod with an opening spring inside, one end of which is mounted in the handle and the other in the head of the umbrella, and a spacer tube installed inside the opening spring, according to the invention, the end part of the spacer tube is rigidly connected to the head the umbrella and it is worn with a tubular spacer, one end of which is equipped with an inwardly facing protrusion, on which the opening spring is supported, and the other with an outwardly facing protrusion with an additional spring supported on it, ivopolozhnoy face pressed against the head of the umbrella.

 This set of common essential features is the essence of the claimed invention. It is necessary and sufficient in all cases of its implementation.

 In this design, due to the force of the additional spring, the tubular spacer together with the upper part of the opening spring when opening the umbrella is pushed down from the head of the umbrella until the forces of the opening and additional springs are aligned. Accordingly, ceteris paribus, the opening spring when opening the umbrella lengthens less than in a conventional design, and retains greater force at the end of the stroke of the telescopic rod. The maximum force when folding the telescopic rod of the umbrella manually remains the same, since the parameters of the opening spring remained unchanged.

 In real designs, the increase in effort at the end of the telescopic rod stroke when opening the umbrella can reach 15 ... 20%. If an increase in force at the end of the stroke of the telescopic rod is not required, the design with an additional spring allows you to reduce the maximum force when folding the telescopic rod of the umbrella manually by installing a softer opening spring, which favorably affects the consumer qualities of the umbrella and is convenient for users, especially women.

 In addition to the described set of common essential features, it is necessary to highlight the following development and / or refinement of the sets relating to particular cases of performance or use.

 Preferably, the inwardly facing protrusion is circular.

 It is also preferred that the outwardly facing protrusion be circular.

 It is desirable that the end of the spacer tube be rigidly connected to the head of the umbrella with glue.

 It should be noted that an important advantage of the claimed invention is also that it can be implemented on technological equipment already used in light industry.

 The invention is illustrated in the drawing.

Figure 1 shows the claimed folding umbrella in the open position, General view;
figure 2 is a General view of the core of the umbrella without a frame in the folded position;
figure 3 is the same, with the covers removed on the head of the umbrella and the yoke;
figure 4 is a General view of the umbrella in the folded position, a longitudinal section;
figure 5 is a longitudinal section of the rod of the umbrella with a plane passing through the axis of the rollers on the yoke (perpendicular to the plane of the section in figure 4);
figure 6 is a General view of the umbrella in the open position, section;
in FIG. 7 is a general view of an umbrella with a frame folded on an extended stem, a section;
in Fig.8 is a section a - a in Fig.4;
in Fig.9 - section B - B in Fig.7;
figure 10 - the design of one of the spokes of the frame of the umbrella;
figure 11 is the same, a section along b - In figure 10;
on Fig - design of another spoke of the frame of the umbrella;
in FIG. 13 shows tubes of a telescopic rod and some details, a perspective view;
on Fig shows the upper part of the umbrella in the folded position, a longitudinal section;
on Fig shows the upper part of the umbrella in the open position, a longitudinal section;
in Fig.16 depicts a plug separately, a perspective view;
on Fig shows a plug in the General Assembly of the head of the umbrella.

 Before starting this section of the description, the applicant considers it necessary to note the following. The claimed invention can be illustrated by examples of various designs of umbrellas. However, to ensure clarity, the applicant provides an example of the invention using the example of an umbrella - a full automatic machine in four additions with forcibly deformable wire rods in the frame. With many advantages, this design, however, requires considerable effort to open the umbrella dome.

 The umbrella (Fig. 1) includes a telescopic rod 1, containing tubes coaxially connected and successively connected to each other, a folding frame 2 of the umbrella dome, including pivotally connected levers and rods with tightening springs, as well as a handle 3. The telescopic rod 1 is coaxially the yoke 4 moves. At the top of the telescopic rod 1, the umbrella head 5 is fixed.

 In FIG. 2 shows a general view of an umbrella rod without a frame in a folded position. The shape of the head 5 of the umbrella and the yoke 4 with slots for attaching the frame levers is clearly visible. Inside the handle 3 there is a locking device, which is controlled by button 6. On the yoke 4 and the head 5 of the umbrella there are removable covers 7 and 8, through which the rollers are installed during assembly.

 In Fig.3 to explain the layout of the cable 9, designed to open the umbrella, removable covers 7 and 8 are not shown. The cable 9, exiting the telescopic rod 1 to the outside, envelops the roller 10, then bends around the roller 11 of the yoke 4. Next, its branch unfolds on the roller 12 in the umbrella head 5 (see also Fig. 17) and once again unfolds on the additional roller 13 of the yoke 4, and the additional roller 13 of the yoke 4 has a larger diameter than the roller 11 of the yoke 4. The end of the cable 9 is knotted in a hole in the end surface of the umbrella head 5. Thus, the cable 9 forms between the yoke 4 and the head 5 of the umbrella polyspast in four branches.

 Figure 4 shows a longitudinal section of an umbrella and one of the spokes of the frame in the folded position. The telescopic rod 1 consists of four tubes: inner 14, first intermediate 15, second intermediate 16 and outer 17 (see also Fig. 13). At the top of the outer tube 17, the inner part of the umbrella head is inserted, which we will hereinafter call the plug 18. The plug 18 is rigidly fixed to the spacer tube 19, which abuts the shuttle 20 with its lower end (this is shown in more detail in Figs. 14 and 15). An opening spring 21 is clamped inside the telescopic rod 1 between the plug 18 and the protrusions on the inner surface of the inner tube 14 (see FIGS. 5 and 13). The inner end of the cable 9 is fastened to the shuttle 20. The umbrella handle consists of a housing 22, a shell 23 and screwed onto the nozzle housing 24. The shell 23 and the housing 22 are interconnected by a screw 25. The housing 22, the inner tube 14 and the inserted tube 26 are fastened with a pin 27. A leaf spring 28 is clamped between the tube 26 and the inner surface of the tube 14, which presses the shuttle 20 to the side buttons 6, vyd pouring its conical part into the rectangular hole of the tube 14 (hole in the tube 14, see Fig.13). Inside, on the button 6 on the axis 29 (see Fig. 8), a spring-loaded plunger 30 is installed. From the inside, the button 6 rests all the way on the locking bracket 31 (see also Fig. 8), pressed by the leaf spring 32. The locking bracket 31 enters the slot on the surface of the outer tube 17, holding the telescopic rod 1 in the folded position. By means of wire rings 33 and 34, levers 35 and 36 of the first stage of the umbrella frame are evenly distributed around the circumference with the help of wire rings 33 and 34 to the yoke 4.

 The additional spring 37 and the tubular spacer 38 are located in the upper part of the telescopic rod 1 above the inner tube 14 and the first intermediate tube 15, but inside the second intermediate tube 16 and the outer tube 17 (Fig. 14). The upper flanged end of the tubular spacer 38 is sandwiched between the upper end of the opening spring 21 and the plug 18. The lower end of the tubular spacer 38 is supported by the lower end of the additional spring 37, which again abuts against the plug 18 with its upper end.

 Figure 5 shows a section of the shaft of the umbrella along the axes of the rollers on the yoke 4. The roller 10 of the plug is mounted on an axis in the plug 18 (see also Fig. 14). The roller 12 of the umbrella head is worn on the axis 39 in the umbrella head 5. The window is closed by a cover 7. The head 5 of the umbrella, the outer tube 17 and the plug 18 are fastened together by a pin 40. In the yoke 4, a roller 11 and an additional roller 13 are mounted on two axes, the additional roller 13 of the yoke 4 having a larger diameter than the roller 11 of the yoke 4 The yoke window is covered with a lid 8.

 6 and 7 depict the phases of the functioning of the umbrella.

 In FIG. 10, 11 and 12 depict one of the spokes of the dome frame in the open position. The first stage of the spoke consists of a long lever 35, a short lever 36, a rod 41. At the end of the lever 35, the main lever 42 of the second stage of the frame is hinged. The main lever 42 with a short shoulder is pivotally connected to the rod 41. On the long shoulder of the lever 42, a short rod 43 is pivotally attached, the second end connected via an axis (rivet) 44 to the ring of the wire rod 45. The other end of the wire rod 45, bent by the hook, is inserted into the hole of the lever 35. A tightening spring 46 is hooked to this hook inside the U-shaped profile of the lever 35. A second spring hook 45 is threaded into the hole of the rod 41.

 The third stage of the frame consists of two elastic wire rods: the upper 47 and the lower 48. The upper rod 47 is passed through its end through a short rod 43 and connected to the axis 44. On the side walls of the rod 43 having a U-shaped profile, protrusions are made directed into the profile holding the rod 47 pressed to the base of the U-shaped profile of the rod 43 (see Fig.11). The elastic draft 47 due to the kinematics of the spoke is forcibly curved upwardly. At a certain distance from the hinge connecting the lever 42 and the rod 43, the lower wire rod 48 is pivotally connected outside the U-shaped profile of the lever 42.

 The fourth step (see Fig. 12) consists of an end wire spoke 49 mounted in a short lever 50. The middle part of the lever 50 is pivotally connected to the end of the rod 47 by an axis 51 made in the form of a rivet. The short arm of the lever 50 is pivotally connected via an intermediate rod 52 to the end of the lower wire rod 48. In addition, a bracket 53 is put on the axis 51, limiting the distance between the links 47 and 48 and eliminating excessive degrees of freedom of the described mechanism.

 All shoulders between the hinges on the levers and rods are defined in such a way that when the yoke 4 moves upward along the telescopic rod 1, the dome frame opens, and when folded down, it develops.

 On Fig in a perspective view shows the tube of the telescopic rod 1 of the umbrella, namely, the inner tube 14, the first intermediate tube 15, the second intermediate tube 16 and the outer tube 17 and, in addition, shows the plug 18, the housing 22, the lock bracket 31 and the tubular spacer 38. The design of the tubular spacer may be different. In particular, it can be composite when, instead of flanging, an inner ring is attached to the upper part of the pipe of the tubular spacer 38 and an outer ring is attached to the lower part of the spacer. The design of the tubes of the telescopic rod 1 with alternating cylindrical and hexagonal sections prevents them from being pulled out of each other in the direction from top to bottom. In addition, the tubes cannot be rotated relative to each other, which provides protection against the reversal of the umbrella dome relative to the handle.

 Such is the design of the claimed device in statics. Consider now the main phases of the functioning of the folding umbrella.

Umbrella opening
When the umbrella is closed and folded (see figure 4), the outer tube 17 is fixed with a locking bracket 31, pressed by a leaf spring 32. The opening spring 21 and the additional spring 37 are compressed (figure 14), and the yoke 4 is in the lower position. The frame of the dome is complicated. The cone of the shuttle 20 under the action of the leaf spring 28 is extruded into the rectangular hole of the inner tube 14. The pusher 30 abuts against the outer surface of the tube 17.

 To open the umbrella, it is necessary, holding the umbrella in the hand by the handle, press the button 6 with your finger. Button 6, moving inward, will slide the locking bracket 31, which will come out of the slot of the outer tube 17 and release it. Under the action of the opening spring 21 and the additional spring 37, the first intermediate tube 15, the second intermediate tube 16 and the outer tube 17 will begin to extend, that is, the telescopic rod 1 will be extended. The shuttle 20 will still hold on to the edge of the rectangular hole of the inner tube 14. The cable 9 will be more and more tightened inside the telescopic rod of the umbrella, thereby rolling along the rollers 10, 11, 12 and 13, pull the yoke 4 to the head of the umbrella 5. The whole folding the dome frame moves up, all its traction and levers are actuated. The opening of the umbrella ends when the yoke 4 rests on the head of the umbrella 5 (see figure 1). In this case, the efforts of the opening spring 21 and the additional spring 37 are equalized, and the tubular spacer 38 will stop at some intermediate position at some distance from the umbrella head (see Fig. 6 or 15).

Folding umbrella
When the umbrella is opened, the pusher 30, having no obstacle in the form of outer tubes of the telescopic rod 1 (they are extended upward), is turned by the action of the spring until it coincides with a rectangular hole in the inner tube 14 (see Fig. 6). Now the user, when he wants to close the umbrella by pressing the button 6, pushes the cone of the shuttle 20 from the hole in the tube 14. The inner end of the cable 9 together with the shuttle 20 are released from fixing. The frame 2 of the umbrella under the action of the tightening springs 46 begins to fold, moving the yoke 4 from the head 5 of the umbrella. With increasing distance between the yoke 4 and the head 5 of the umbrella, the cable 9 is pulled out by the rollers outward until the shuttle 20 rests against the end of the spacer tube 19 (see Fig. 7 or 15). The umbrella frame will be automatically folded on the extended telescopic rod.

 For complete folding of the umbrella, it is necessary to manually push the tubes of the telescopic rod 1 against each other, overcoming the force of the opening spring 21 and the additional spring 37. At the same time, the locking bracket will again fix the outer tube 17, and the shuttle 20, when moving downward under the action of the spacer tube 19, will bend the leaf spring 28 and again be fixed in the rectangular hole of the inner tube 14 (see Fig. 4). It should be noted that the efforts of the springs 21 and 37 do not add up, and the opening spring 21, with its compression, presses more on the additional spring 37, causing it to also contract. After that, the umbrella is ready to open.

Rod assembly
Before assembling the head of the umbrella, the handle 3 of the umbrella with the tubes of the telescopic rod 1 is assembled in the usual manner. The assembly of this part of the umbrella is well known and can be different, and since this assembly does not affect the essence of the claimed invention, it is not considered in the materials of this application.

 In the initial position, before assembling the head of the umbrella, we have four tubes nested into each other, namely, inside the outer tube 17 there is a second intermediate tube 16, inside of which, in turn, is the first intermediate tube 15, and inside it there is an inner tube 14 fixed in handle 3.

 To assemble the umbrella head, all tubes are initially pulled to the maximum length. This must be done so that when installing the springs, less effort is required to compress them. Then put on the yoke 4.

 Take the spacer tube 19 and from the side where the handle 3 of the umbrella will be located, the free end of the cable 9 is passed through the spacer tube 19, on the other end of which the hook 20 is already tied. Since the rear end of the shuttle 20 has a diameter larger than the diameter of the hole in the spacer tube 19, then the end of the shuttle 20 "sits" on the end of the spacer tube 19. After that, take the plug 18 (Fig.12, 14, 16) and the free end of the cable 9 is passed through the hole 54 in the bottom 55 of the plug 18 with the exit of this end of the cable 9 into the side hole 56. Carry out a hard accession s end of the spacer tube 19 with the head of the umbrella. This can be done by various techniques, for example by gluing, welding, etc. We show this by the example of gluing. To do this, glue the outer surface of the end of the spacer tube 19 with glue and insert it into the socket 57 of the plug 18. It is held in a pressed position for some time until reliable bonding is ensured. After that, in the broadening 58 of the side hole 56, the ends of the axis 59 are inserted, on which the roller 10 rotates freely (Fig. 13). The cable 9 is thrown over the roller 10. The assembled assembly is temporarily laid aside.

 Then again take the telescopic rod 1 with the tubes extended. As noted above, on one side of the inner tube 14 is already attached to the handle 3, and the other end is open. Into the inside of the telescopic rod 1, the opening spring 21 is inserted until the stop of its lowering end into the protrusions on the inner surface of the inner tube 14. These protrusions can be formed by indenting individual sections of the outer walls of the inner tube 14. The indentation points are indicated by 60 in FIG. 12.

 Then, the telescopic rod end peeking out from the outer tube 17 of the telescopic rod 1 is extended with the tubular spacer 38 extending to the upper end of the tubular spacer 38 against the end of the disclosing spring 21. In general, the upper end of the tubular spacer 38 being folded inward is inward and made, for example, annular, the protrusion 61, forming a narrowed end of the tubular spacer 38 with a through hole 62 in the Central part. It can be made not only by flanging the tubular blank of the tubular spacer 38 inward, in particular by flattening with a bend, but also by welding to the end of the tubular spacer 38 a ring with an inner diameter of the hole smaller than the inner diameter of the hole of the tubular spacer 38.

 After that, an additional spring 37 is put on the outer cylindrical surface of the tubular spacer 38 from the opposite side so that its end abuts against the lower outward end of the tubular spacer 38. In general, the lower outward end of the tubular spacer 38 is facing outward and made, for example , annular, protrusion 63 (Fig. 13 and 14). It can be made not only by flanging the end of the tubular blank of the tubular spacer 38 to the outside, in particular by flattening with bending, but also by welding to the end of the tubular spacer 38 of a ring with an inner diameter of the hole equal to the inner diameter of the hole of the tubular spacer 38 and with an outer diameter a lateral cylindrical surface exceeding the outer diameter of the tubular spacer 38.

 Then, in the middle of the assembly obtained, from the side of the free end of the additional spring 37, the end of the expansion tube 19 with the shuttle 20 is inserted. In this case, this end of the expansion tube with the shuttle 20 passes first into the free end of the additional spring 37, then into the opening 62 and then into the opening spring 21 . With further movement of the spacer tube, the free end of the additional spring 37 touches the plug 18. When this movement continues, first the additional spring 37 begins to compress, and then the opening spring spring 21. Movement with simultaneous compression of both springs lasts as long as the plug 18 is seated its protrusion 64 to the edge 65 of the groove 66 formed in the outer tube 17.

 Then, holding the plug 18 inside the outer tube 17 of the telescopic rod 1, put on the cylindrical head 5 and fix the cylindrical head 5, the inner tube 17 located inside it and the plug 18 located inside the outer tube 17 with a transverse pointed pin 40 by hammering the latter, for example, with a hammer. The cylindrical head 5 covers the plug 18 and prevents the roller 10 from falling out of it on the axis 59.

 After that, refuel the cable 9 through the roller on the yoke, etc.

 The functioning of the assembled umbrella was discussed in detail earlier.

 The proposed device is an umbrella - a full automatic machine in four additions with improved power characteristics of the spring-cable device opening - folding the umbrella.

 The applicant considers it necessary to note that the design of the umbrella frame may be different and contain other elements and details. The locking device may also be of another design.

 In addition, the claimed design of a spring-cable device for opening - folding can be used on umbrellas in three additions with three tubes of the telescopic rod. The difference from the described example will consist only in the fact that the outer (fourth) tube of the telescopic rod will be absent, and its role will be played by the third (from the inside) tube, and the umbrella head will now be attached to it.

 The invention allows to increase the force of the spring drive at the end of the stroke during the opening of the umbrella dome without increasing the force required for the final folding of the umbrella stem manually. In addition, an important advantage of the claimed invention is also the fact that it can be implemented on technological equipment already used in light industry.

Sources of information taken into account
1. US patent 6173722, cl. A 45 B 25/14, published. 01/16/2001.

 2. US patent 5492140, CL A 45 B 25/14, published. 02/20/1996 (prototype).

Claims (4)

1. An umbrella comprising a telescopic rod with an opening spring inside, one end of which is mounted in the handle and the other in the head of the umbrella, and a spacer tube installed inside the opening spring, characterized in that the end part of the spacer tube is rigidly connected to the head of the umbrella and she wears a tubular spacer, one end of which is equipped with an inwardly facing protrusion, on which the opening spring is supported, and the other has an outwardly facing protrusion with an additional spring supported on it, the opposite side is pressed to the head ke umbrella. 2. The umbrella according to claim 1, characterized in that the inwardly facing protrusion is circular. 3. The umbrella according to claim 1, characterized in that the outwardly facing protrusion is made annular. 4. The umbrella according to claim 1, characterized in that the end part of the spacer tube is rigidly connected to the head of the umbrella with glue.

Images