SU1595542A1 - Hockey bandy - Google Patents

Abstract

The invention relates to sports articles, in particular hockey sticks, and allows to increase the durability of the club by preventing delamination in the junction of the handle and the hook. The hockey stick contains a handle connected to a hook having a core including plastic-fiber-reinforced plastic and outer plates, the core being made composite and includes two wooden wedges covering a layer of reinforced plastic that consists of two halves, between which the third wooden wedge is located whose edge is located between the blunt ends of the first two wedges, while the hook and handle are covered with a single layer of aramid fabric, and the hook and handle over the aramid fabric are covered with a layer of fiberglass an epoxy resin impregnated binder. 8 ill., 2 tab.

Description

The invention relates to sports articles, in particular hockey sticks.

The purpose of the invention is to increase the service life of the club by preventing delamination in the zone where the handle and the hook join.

FIG. 1 shows the proposed stick, the overall appearance; in fig. 2 is a section A-A in FIG. 1; FIG. 3 is a section BB in FIG. one; FIG. 4 is a section B-B of FIG. one; in fig. 5-7 - sections of GG in FIG. one; in fig. 8 is a view of the connection of a hook with a handle.

The proposed club consists of a handle 1, a hook 2.

The handles of the 1 club are assembled from layers of wood connected with urea formaldehyde resins. Birch or a combination can be used in the handle

birch with hay. Outside, to increase the strength of the handle of the club, it is covered with fiberglass - 3 (one or two layers), glued to the layer of aramid fabric 3 and wood using epoxy diane resin. Gluing the reinforcing fiberglass 3 to the handle 1 is best carried out starting from the center of the rod body towards the hook 2. Aramid fabric 3 is located on the outer surface of the wooden handle 1 and is also glued to it with epoxy resin. Gluing the aramid fabric h starts from the area close to the grip of the handle 1 with the hand of a hockey player. At the end of the handle 1, enough space should be left to grip the handle 1,

Aramid fabric - polyparaphenylene terephthalamide based fiber fabric

ate

JV JV

li. hO

or heterocyclic based fibers

polyamide.

The hook of the putter is also assembled from wooden plates 4, between which core 5 is located, Core 5 is assembled from sheets of wood. The leaves of the tree are assembled in such a way that the outer wedges 6 come to naught in the region of section B-B and the inner wedge 7 placed between the layers a) of the fabric 8 extends beyond the surface of the outer wedges 6. The reinforcing fabric 8 of the core 5 is preferably made It is made of fiberglass. However, other types of high-strength and high-modulus fibers, as well as hybrid structures, can be used to reinforce the core 5. The connection of the core 5 in one piece is carried out using an epoxy binder.

The outer surface of the hook is additionally reinforced with fiberglass 9, under which the aramid fabric 10 is placed. Aramid fabric 10 is made uniform with the layer of the handle, while glass fabric 3 and glass fabric 9 can be different.

The handle is connected to the hook 2 by means of a spike connection, which is formed due to the fact that the outer layer 11 forming the handle 1 overlaps the outer layer 12 of the hook, with the layers 11 and 12 spanning the core 5, the joint area on top is reinforced .

The proposed club is made by a known method.

Example 1. The handle of a putter is assembled from slats based on birch and hay or only from birch. The number of rails in the handle is odd. The tree must meet the requirements of GOST 2695-83 or GOST 7897-83.

Handles are glued together with a carbamide-melamine glue (KF-B grade according to GOST 14231-78) or with the help of a phenol-formaldehyde resin according to GOST 20907-75.

Technological consoles made of birch are glued with adhesives to the finished blank of the handle in the part that is connected to the hook. After that, the handle along with the technological attachments are milled. Cutter cut out the groove under the core of the hook and under the outer plate of the hook.

Separately, wooden hook plates are made of birch veneer according to GOST 99-75 not lower than grade B.

Separately, the wedge-shaped part of the core. The wedge-shaped portions of the core 1 are made of birch veneer. However, before assembling the patterned parts are ground, giving the veneer a wedge-shaped section. Each of the core plates in the widest part has a size of approximately 3 mm. One wedge-shaped plate is ground on both sides (inner wedge) and coated on both sides with fiberglass or glass net impregnated with epoxy binder, for example, marks ED-20), and then

0 drying and incomplete curing at 150 ° C and a pressure of 0.3–0.4 MPa for 0.2–0.5 h, this plate is again ground off so that, when the outer plates are applied to the reinforced inner

5 plate outer surfaces of the outer wedges were parallel. The external wedge is coated with an epoxy binder and only after that the core is finally pressed at 0.5-0.7 MPa and

0 150 ° C for 1 h.

Upon completion of the manufacture of all major parts, the club is assembled and glued with the same adhesive that was used for the Wood Blanks.

5 The shearing strength of adhesive joints at the end of gluing along the glue line is strictly controlled and must be at least 8 MPa (80 kg / cm).

After drying and curing the total

Assemblies are applied successively to the handle of the club and on the surface of the outer plates of the hook they stick aramid fabric with epoxy adhesive. At the same time, the aramid fabric begins to glue onto the handle to the center of the core of the putter, and leave room for bare wood (for the convenience of gripping the handle with the hand). Then, in the zone after the center of gravity of the club, a layer of glass fabric impregnated with epoxy resin is applied to the surface of the aramid fabric. Fiberglass cover and that part of the hook (after the outer plates of the core), which remains uncovered by the previous layer of aramid fabric.

5 Thus, it can be seen that in the core area of the club hook the fiberglass is reinforced with aramid-fabric reinforced with a hybrid composite, and only fiberglass in the end area. The handles of the clubs are also reinforced with a hybrid composite fiberglass - aramid fabric.

In tab. Figure 1 shows the specific brands and properties of the fabrics for the proposed club, as well as the optimal places for using them in the club.

After the handle and hook are coated with reinforcing fabrics impregnated with an epoxy binder, the stick is placed under a press and pressed at 150 ° C for 1 hour and a pressure of 0.5-0.7 MPa. The pressing pressure in the range of 0.5-0.7 MPa is increased to a maximum for 0.2 h, then 0.3 h is kept at the maximum level, and then for 0.5 h is reduced to the minimum of the specified interval.

The strength of gluing aramid fabric with wood should be at least 200 N. The optimal formulation of an epoxy binder, mac.ch .:

Epoxy-dianin resin according to GOST 10587-76100

Acetone./}

Polyethylenepolyamine

Before pressing and curing, after applying the binder to the reinforcing fabrics, it is preferable to dry the latter at 30-35 ° C for 1 hour, and then give the workpiece technological aging at room temperature for 24 hours.

Example 2 (control). The process is carried out as in Example 1, but aramid fabric is placed in the core of the hook, and the handle and part of the hook are reinforced with aramid woven tape, winding the latter onto the handle and hook, as if on a rod.

Example 3 (control), the process is carried out as in example 1, but the club is completely made of glass cloth. The core of the hook is made of fiberglass, and the handle and hook are made of fiberglass.

Example 4. The process is carried out as in Example 2, but the club is fully reinforced with aramid fabric (core) and aramid woven tape (handle).

In tab. 2 presents experimental data on tests of the proposed club.

For each test case, 100 clubs were made and 90 of them were given to play one of the teams of the major leagues. The clubs were numbered and the players did not know which club they played: imported (for comparison) or proposed. After playing or training, players rated the club on a five-point system.

In tab. 2 shows the average scores given by players to each numbered club.

The remaining 10 clubs from each batch were tested for impact strength, static strength by the method described in TU 62-4939-80, and, in addition, weighed before testing. In tab. 2 presents test data and results of weighing 10.

Data analysis table. 2 objectively shows the advantages of the new club compared to the prototype. In this case, from the table. 2 shows that the subjective assessment of players

5 coincide or almost coincide with the results of independent tests. The new design of the core of the hook showed its positive properties only when using hybrid composites for the reinforcement of the club and did not show these properties when using the components of the hybrid separately.

At the same time, hybrid reinforcement in the design of the prototype does not give a positive result.

Claims (1)

Invention Formula A hockey stick containing a handle connected to a hook having a core including glass-fiber reinforced plastic and outer plates, which in order to increase the service life of the clubs 35 by preventing it from splitting in the zone of the handle and hook, the core made of composite and includes two wooden wedges, covering a layer of reinforced plastic, which consists of 40 of two halves, between which there is a third wooden wedge, the tip of which is decayed. It is between the blunt ends of the first The hooks and the handle are covered with a single layer of aramid fabric, and the hook and handle over the aramid fabric are covered with a layer of fiberglass impregnated with epoxy binder. (ABOUT s y 0 00 with in about C5 about about gsm ffl about (ABOUT about. (U s X s 2 . about. S S about. ha S with " that about with: S  with about with o you (Y) cm pz j s with; U TO ABOUT) 3 2 with S o (one) CD L. t s o I o and m W S CD m o s o to about CD Q. v:, o. (J 5 FIG. 6 FIG. four Birch tree gd pcs ... 4tnih3f3; Birch tree