FI110166B - Push rod and push rod - Google Patents

Abstract

A pushing stick and a ring for the same. The lower end of a shaft comprises a stick ring comprising a fastening part and a projection-like ring frame attached to the fastening part. The bar-like ring frame is directed forwards with respect to the direction of travel and its front is provided with at least one spike. Said spike then resides at a distance from the central axis of the shaft, whereby a bending moment is directed to the ring frame on account of the push force. The ring frame is rigid in order to be able to transmit the bending moment being formed to the lower end of the shaft.

Description

1 110166 Thrust rod and push rod handle

The present invention relates to a push rod, the rod comprising an elongated shaft, a handle portion disposed on the upper end of the shaft for applying a substantially longitudinal thrust of the shaft to the rod, and further a sleeve disposed on the lower end of the shaft; and wherein the mandrel comprises an attachment portion for attaching the shaft to a spunk, a mandrel body secured to said attachment portion transverse to the longitudinal axis of the mandrel and extending in the forward direction viewed from the front of the rod;

The invention further relates to a strut for a push rod, the strap comprising: a fastening portion for securing the strap to the lower end of the push rod arm; a body frame attached to said fastening portion and extending in a forward direction viewed from the front of the fastening portion; and at least one peak which is on the underside of the somme body and forms the lowest portion of the somme.

Typically, ski poles and the like are provided with a spike at the lower end of the shaft. The problem with traditional ski poles is that the propulsion force 20 cannot be sufficiently loaded on the handle during insertion, which weakens the thrust efficiency. As skiing speeds have increased significantly with the development of slabs and skis, new features are also expected from poles.

Fl Publication 82194 discloses a ski pole grip having a central position. The axis 25 is oriented in the direction of the ski and is oval in shape. When viewed from the ski direction, the Sompa extends to the front of the pole. Because the spike • ♦ '···' is fitted to the shaft extension, thrust cannot be stored in this solution to provide effective shear.

It is an object of the present invention to provide a novel and improved push rod and push rod grip.

The push rod according to the invention is characterized in that »· # the body of the rod is viewed in the longitudinal direction of the rod; * a directed rod-like projection, the first end of which is fixed to the fastening part: and the other end is free; that one or more prongs are disposed 35 only in the region of one end of the stem body at a distance from the center axis of the shaft; that the caliper body is adapted to serve as a lever arm for 110166 2

Whereby a bending moment is applied to the mandrel body to apply a thrust parallel to the longitudinal axis of the shaft; and that the mandrel body is a substantially rigid body with respect to bending, whereby it is adapted to transmit the resulting bending moment to the lower part of the shaft.

Further, the push rod assembly according to the invention is characterized in that the claw body is viewed from above as a rod-like projection in the direction of travel, the first end of which is secured to the mounting part and the other end of which is free; said one or more prongs being disposed only in the region of one end of the shank body at a distance from the attachment portion 10, the shank body being arranged to form a lever arm between the prong and the attachment portion; and that the mandrel body is a substantially rigid body with respect to bending.

An essential idea of the invention is that at the lower end of the push rod there is a lug comprising a protruding lug body. The body body is oriented forwardly in the direction of travel 15 and has at least one spike in the region of its free end which, viewed in the longitudinal direction, forms the lowest portion of the rod. The spike is then at a distance from the center axis of the shaft, whereby the mandrel body acts as a kind of lever arm, producing a bending moment when the thrust acts on the rod. The pivot body 20 is formed with respect to bending, which enables it to transmit the resulting bending moment to the lower end of the shaft. Further, since the spike is located at a distance from the center axis of the shaft, the rod makes a larger arc when tilted than if the pivot point acting as a pivot point is fitted to the extension of the center line of the shaft.

An advantage of the invention is that the radius of the arc made by the forward facing body when tilting the rod is greater than the length of the rod '··· *, whereby the tilting of the rod provides the extension effect of the thrusting rod. Further, when the body of the cam acts as a lever arm between the spike and the shaft, the thrust provides a bending moment which is transmitted to the lower end of the arm 30, which bends under the effect of said bending moment, thereby converting part of the thrust to spring. The spring force stored in the rod's elastically deflection arm is released at the end of the stroke, thereby enhancing *; · 'thrust.

It is an essential idea of a preferred embodiment of the invention that the free end of the body frame, when viewed in the longitudinal direction of the rod, extends beyond the end of the body portion of the body body. In this way 110166 3 can be ensured that the tip of the body body together with the spike always forms the outermost portion of the lower end of the rod and is thus first received against the base when pushed.

In another preferred embodiment of the invention, it is essential The idea is that at the free end of the body there is a protruding claw extending a distance from the underside of the rod body. The nail may serve as a point of attachment of the peak. On the other hand, the nail itself can act as a spike.

An essential idea of a third preferred embodiment of the invention is that the fastening part is an elongated sleeve into which the handle of the handle can be inserted. Further, the fastening member is elasticly elongated in its longitudinal direction so that no discontinuity point detrimental to the durability of the structure is formed between the fastening member and the arm.

The invention will be explained in more detail in the accompanying drawings, in which Fig. 1 is a schematic side view of a push-rod according to the invention, Fig. 2 is a schematic view of the push-pull effect provided by a push rod of the invention; Fig. 5 is a schematic and sectional view of a push rod of the invention according to the invention, in sectional view. :. Fig. 6 is a schematic and bottom view of the «· iftt of Fig. 4. Fig. 7 is a schematic and side elevational view of another sump of the invention; Fig. 8 is a schematic and top plan view of an expansion member fitting into the inventive sump; and * ... · * 30 Figure 9 is a schematic and side elevational view of the extension of Figure 8.

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In the figures, the invention is illustrated in simplified form. For like parts, the same reference numerals are used.

; It should be noted that in this application, a push rod is intended to be a means of movement by means of which a person's hand thrust is transmitted to a platform to enhance the person's movement. Accordingly, the push rod of the invention is suitable for use in cross country, alpine skiing, roller skiing, roller skating, hiking, Nordic walking, lumiken walking and the like.

The push rod 1 shown in Figure 1 comprises an elongated shaft 2, 5, which is preferably a circular or oval tube of fibrous reinforced plastic material. A handle part 3 is provided at the upper end of the arm 2, which usually comprises a fastening member 4, such as a fastening strap 1, for engaging the user's hand. Alternatively, instead of the strap, the handle portion 3 may comprise a glove-like fastening member 4 shown in Figure 2, into which the hand is pushed and tightened. The handle portion 3 defines the direction of operation of the rod 1, since the handle portion 3 is typically shaped to be held in the hand in only one predetermined position. Further, the fastening lugs 4 of the handle part 3 determine how the rod is oriented in the operating situation. The direction of travel is indicated in the figure by reference A. Further, at the lower end of the arm 2 there is a lug 15 5 which is secured to the arm 2 by means of the fastening part 6. The fastening part 6 is preferably an elongated sleeve. The strength of the connection between the fastener 6 and the arm 2 can be ensured, for example, by adhesive. Further, the spool 5 comprises a bar body 7 transverse to the longitudinal direction B of the arm 2, which when viewed in the longitudinal direction B of the arm 2 is a rod-like projection. The first end 8 of the body 7 is attached to the attachment part 6 and the second end 9 is free. As can be seen in Figure 1, the sompa body 7 is oriented in the direction of travel A, wherein the somma body 7 is substantially only in front of the rod 1 and the longitudinal axis of the body 7 is substantially parallel to the direction of travel A. The other end 9 of the body 7 has its lower surface. At least one spike 11 disposed on the 10 side thus forms the lowest portion of the rod 1, being first in contact with the base 12 when the rod · · * ··· 1 is pushed F. Since the spike 11 is at a distance C from the center axis of the shaft 2 , is formed by the thrust F of the mandrel 7 under the action of a bending moment · · • V ··. The distance C is preferably 3 to 15 cm. The bodyshell body 7 is structurally and / or manufactured by means of a manufacturing material and / or by means of a manufacturing material, so that it is capable of transmitting the bending moment generated by the thrust F to t · · and, for the sake of clarity, heavily exaggerated: in accordance with the dashed line 13, and provides storage of the spring force 35 in the elastically resilient arm 2. Said spring force is released at the final stage of the stroke, thereby increasing the stroke. The spring force and its exploitation are taken, 710766

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advantageously in the design of the arm 2. Typically, arm 2 is made by winding impregnated reinforcing fibers in a plastic material around a mandrel or the like. In this case, the bending stiffness and other properties of the arm 2 can be adjusted relatively simply by modifying the angle of winding of the reinforcing fibers, the number of layers wound, and by using various reinforcing fiber materials such as carbon and aramid fibers. The Sompa 5 is preferably made of a plastic material by injection molding. Preferably, the spike 11 or spikes are metal and can be secured to attachment points formed at one end 9 of the body 7. Alternatively, the spike 11 may be an integral part of the body 7 and a part of the same or different material with the body 7. The material, dimension and shape of the peak 11 are selected according to the purpose of the push rod 1. For example, the skate and ski poles use a sharp spike 11 to ensure good grip even on ice. On the other hand, for example, for walking poles, the spike 11 may be blunt at its tip and provided with a suitable friction pin 15 to increase the friction between the asphalt and the spike 11.

In Fig. 2, the rod 1 is shown inclined, showing the elongation effect provided by the body 7 directed in the direction of travel A. As the upper end of the rod 1 is inclined in the direction D with respect to the spike 11, the upper end of the rod 1 rotates along the curve 20 drawn by the radius 14 shown in dashed line 14 in Fig. 2. When tilting, the effective length of the rod is the indicated V-pitch of the dotted line 11 from the spike 11 to the handle portion 3, which distance in the rod according to the invention is always longer than the length E. of the rod 1. The magnitude of is and hence the distance from the spike 11 to the shaft 2 * «'. 25 center shafts. The user feels that tilting the rod causes the rod to lengthen, allowing it to extend the action of * ··· the stroke and enhance its strokes.

At the initial thrust, rod 1, as in Fig. 1, is in an upright position and the force component in the direction of travel A is small. In this case, the thrust 2 is charged with a thrust which is then released by a thrust, v. in the final stage of the beam, with the rod 1 inclined, as in Fig. 2, in the direction of travel * · ·. Thus, in the final step of the thrust, the * · force component acting in the direction of travel A is at its maximum.

Fig. 3 is a top view of the push rod 1 of Figure 1. The projecting structure of the body 7 is clearly shown in Figure 3. Thanks to the projecting structure of the body 7, the bending or bending of the arm 2 is controlled in a predetermined direction, In this connection, the risk of buckling of the arm 2 with conventional rods having a prong 11 on the extension of the arm 2 can be avoided.

The lance 5 shown in Fig. 4 is substantially triangular when viewed from the side. The somebody body 7 is at its widest at the first end 8 on the side of the attachment part 6 and narrows towards the other end 9. In this case, the cross-sectional area of the som body 7 is adapted to grow towards the arm. The cam body 7 forms a torque arm, whereby the bending moment is at its maximum at the end 10 of the attachment part 6. For the spike 11, a downwardly projecting claw 16 is provided at one end of the sompa body 7. The body 7 is disposed obliquely at the lower end of the arm 2, whereby the other end 9 of the body extends farther along the longitudinal direction of the rod 1 than the downward nail 16. 15 ensures that the prong 11 or prongs at the forward end of the body 7 always contacts the substrate 12 first. On the other hand, it is not necessary to provide the claw 16 with a separate spike 11, but the claw itself can also act as a kind of spike. Further, Figure 4 shows that the lower surface 10 of the body 7 is preferably convex downwardly in the direction of travel A, so that its shape 20 corresponds to the curved tilt movement of the rod 1.

Y: Figure 4 further shows a preferred structure of the fastening part 6.

The fastening part 6 is an elongated sleeve into which the lower end of the arm 2 can be inserted. The connection between the fastening part 6 and the arm 2 can be either fixed or arranged so that different sumps 5 can be attached to the arm 2 according to the situation and conditions. bayonet-tikiinnitystä. The fastening part 6 shown in Fig. 4 is provided with transverse * · '···' notches 30 on its rear surface side, whereby the fastening part 6 may bend slightly in the direction of its longitudinal axis. In this case, there is no sharp discontinuity between the arm 2 and the attachment part 6, but the attachment part 6 provides at least • I t 30 some force, which allows the structure of the arm 2 to withstand the stresses. strap. Instead of the notches 30, the fastening part 6 can be formed in the longitudinal direction, ···. flexible by appropriately selecting the dimension and material of the fastener 6. Further, the fastening portion 6 preferably extends beyond the junction of the body frame 7 and the fastening portion 6, which also contributes to reducing the stress Y ·· 35 on the arm 2. The arm 2 may have an oval cross-section, which makes it more resistant to bending in the direction of travel A. The grooves 30 also lighten the structure of the arm and further facilitate the attachment of the arm 2.

Fig. 5 is a cross-sectional view of the body 7 at G-G. The lower part of the cross-section has a triangular base 7a, the upper side of which has a plate-like upper part 7b, the cross-section of which is like a rectangle arranged vertically. In this case, the bottom surface 10 of the base 7a forms, in most circumstances, a sufficiently large supporting surface such that the lug 5 does not sink at least into a relatively hard substrate, such as a padded track base. In the case of a solid substrate such as a road 10, the mass 5 does not need to take into account the size of the bearing surface, but in the dimensioning of the base 7a it is mainly taken into account that the body 7 is laterally strong. Preferably, the base 7a has a maximum width of between 7 and 10 mm. Further, the upper part 7b may be a relatively narrow structure in the horizontal direction, even only 2-5 mm wide, whereby it is light but at the same time very rigid with respect to the vertical bending. The air resistance of the cross-section as described is low.

Fig. 6 is a bottom view of the claw 5. The lower surface 10 of the body 7 may have projections 15 for improving grip between the body 5 and the base 12. Although the skeleton body 7 is a relatively narrow protruding rod, the area of its lower surface 10, due to the length of the skeleton body 7, is sufficient to cannulate the rod on most substrates 12.

Fig. 7 shows yet another sump 5 provided with an expansion member 17. As shown in Figs. 8 and 9, the expansion member 17 is a plate-like body disposed on the lower surface 10 of the body 7. The area of the extension 25 of the extension 25 is larger than the area of the lower surface 10 of the body, thereby preventing the rod from sinking from the action of the thrust F on the soft support. Such an extension 17 may be used when moving, for example, in soft snow, swamps or forests. The expansion member 17 may be integral with the spout 5 or be easily removable

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30 options and optional accessory. The extension portion 17 is fitted by means of the sa-rana 18 to the area of the second end 9 of the stem body 7 so that the extension portion 17 can pivot by an angle H indicated in Fig. 7 between the bottom surface 10 * and the dotted line 19 in Fig. 7. Thanks to the hinge 18, when the rod 1 is lifted, the extension piece 17 can pivot so that it easily rises up the front edge, even when it has been submerged, for example, in soft snow. Further, since the extension portion 17 moves between the pushes due to the leading edge ahead due to the hinge 18 110166 8, the air resistance caused by it is small despite the fact that the extension portion 17 can be quite large in size.

Figure 8 shows that the expansion member 17 may comprise openings 20, so that, despite its large size, its weight may be small. At the front end 17a of the extension 17 5 there are two upwardly directed lugs 21 provided with a transverse opening 22. Further, at one end 9 of the sompa body 7, a transverse opening 23 is shown at the rear of the nail 16, as shown in FIG. Through the openings 22 and 23, a hinge pin 24 is fitted which pivotally engages the arm 5 and the extension 17. The expanding portion 17 is supported against the lower surface 10 of the body 7 during insertion.

The expansion member 17 is preferably made by injection molding of a plastic material.

The drawings and the description related thereto are only intended to illustrate the idea of the invention. The details of the invention may vary within the scope of the claims.

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Claims (14)

110166 A push rod - which rod (1) comprises an elongated arm (2), a handle part (3) 5 disposed on the upper end of the arm (2) to apply substantially longitudinal thrust (F) of the arm (2) to the rod (1) (5) disposed at the lower end of the arm (2), and - wherein the lance (5) comprises a fastening member (6) for attaching the arm (2) to a succulent (5), a cam body (7) attached to said fastening member (6). ) transverse to the longitudinal axis of the arm (2) and extending in the direction of travel (A) of the sompa body (7) in front of the rod (1) and further at least one prong (11) disposed on the underside (10) of the body (7) and forming the lowest part of the rod (1), characterized in that the rod body (7) is a rod-like projection directed in the longitudinal direction of the rod (1) with its first end (8) secured to the fastening part (6) and The head (9) is free, that one or more spikes (11) disposed only in the region of one end (9) of the body (7) at a distance (C) from the center axis of the arm (2) 20. that the body (7) is adapted to act as a lever arm (11). . and the arm (2), wherein the mandrel body (7) is adapted to form a bending moment when the rod (1) is subjected to a thrust (F) in the longitudinal axis of the arm (F), and - the mandrel body (7) is a substantially rigid body 25; wherein it is adapted to transmit the resulting bending moment ·: * ·: to the lower part of the arm (2). Push rod according to Claim 1, characterized in that the other end (9) of the body (7) extends outwardly from the first end (8) of the body (7) when considered longitudinally. • · ·. '..' 30 Push rod according to Claim 1 or 2, characterized in that the lower surface (10) of the body (7), when viewed in the direction of travel (A), is convex downwards. Push rod according to any one of the preceding claims, characterized in that the fastening part (6) is an elongated sleeve, that the lower end 35 of the shaft (2) is inserted into the sleeve and that the sleeve is formed in its longitudinal direction. 10 110166 Push rod according to any one of the preceding claims, characterized in that the body of the body (7) is substantially triangular when viewed from the side and that the lower part (7a) of the body (7) has a substantially triangular cross section and a top of the cross section 5 (7b) . Push rod according to one of the preceding claims, characterized in that at the lower end of the rod (1) there is a widening part (17), which is a substantially plate-like piece fitted on the lower surface (10) of the body (7). 7) 10 lower surface (10), that the front end (17a) of the extension part (17) has a hinge (18), that the extension part (17) is secured to the other end (9) of the body (7) by said hinge (18), and that 17) is arranged to pivot with respect to said hinge (18) a predetermined angle (H) downwardly from the lower surface (10) of the body (7). Push rod according to Claim 6, characterized in that at the front end (17a) of the extension part (17) there are two upwardly directed brackets (21) spaced apart, that said lugs (21) have first transverse openings (22) and 7) there is a transverse second opening (23) in the area of one end (9) and that a hinge pin (24) is provided through said first openings (22) and the second opening (23) which engages the body (7) and the extension part (23). 17) pivoting to each other. .; 8. Bucket for push rod, comprising bump (5) comprising a '· ·' attachment part (6) for attaching the bump (5) to the lower end of the handle (2) of the push rod (25), which is fastened said fastening part (6): ··: and extending in the direction of travel (A) in front of the fastening part (6), and - at least one prong (11) which is the lower surface (10) of the body (7). : side and forming the lowest portion of the somme (5), characterized in that »- that the somme body (7), viewed from above, is a rod-shaped protrusion in the direction of travel v \: (A) with its first end ( 8) is closed:. · Mounted on the fastening part (6) with one end free (9): v. - that said one or more prongs (11) are disposed only in the region of the other end (9) of the somersole body (7) at a distance (C) from the attachment part 110166 (6), wherein the somersole body (7) is arranged to form a lever arm and - the fastening part (6), and - that the body (7) is a substantially rigid body with respect to bending. A lance according to claim 8, characterized in that the second end (9) of the lung body (7), when viewed in the longitudinal direction, extends beyond the first end (8) of the lung body (7). An anvil according to claim 8 or 9, characterized in that the fastening part (6) is an elongated sleeve and that the sleeve is formed in its longitudinal direction. 11. The barb according to any one of claims 8 to 10, characterized in that the barb body (7) is substantially triangular when viewed from the side and that the lower portion (7a) of the barb body (7) is substantially triangular and further vertically arranged in the upper section (7b). rectangular. A barb according to any one of claims 8 to 11, characterized in that at one end (9) of the barb body (7) there is a protruding claw (16) directed downwards from its lower surface (10) and that one or more barbs (11) ) is fitted to the lower end of the nail (16). 13. A bar according to any one of claims 8 to 12, characterized in that a substantially plate-like extension (17) is arranged on the lower surface (10) of the housing (7), that the extension (17) is larger in size than the housing. (7) a lower surface (10), the front end (17a) of the extension part (17) having a hinge (18), the extension part (17) being secured to the other end (9) of the body (7) by said latch (18). , and that the extension part ·: · *: (17) is arranged to pivot with respect to said hinge (18) a predetermined angle (H) downwardly from the lower surface (10) of the body (7). An anvil according to claim 13, characterized in that:. that there are two upwardly directed ears at the front end (17a) of the extension part (17). * ·· * 30 lugs (21) apart, that said lugs (21) have transverse first openings (22), that the second body part (7) the head I · v,: (9) has a transverse second aperture (23), and that a hinge pin (24) is provided through said first apertures (22) and the second aperture (23) which engages the body (7) and the extension part (17) pivoting to each other. 35 12 110166