39results about "Stringed rackets" patented technology

The present application relates to the technical field of racket manufacturing, and discloses a racket manufacturing process, comprising the following steps: cutting the foaming agent, with the cutting length ranging from 670 mm to 690 mm; cutting the carbon cloth, with the cutting length ranging from 680 mm to 700 mm; rolling the foaming preform together with the carbon cloth to obtain a preform strip; and preparing a hollow T head through injection molding, and adding aerogel into the hollow of the T head. The racket made by the present application has more reasonable overall weight distribution, reduced weight at the three-way joint, larger bending when hitting the ball, increased speed of the badminton, and good feeling of the user.

The utility model relates to a kind of handle sleeve for badminton racket, it mainly includes one long hollow sleeve body made of silica gel material thin material, the hollow sleeve body has a reduced diameter portion with a converging bevel at one end, the other end is the blocking portion with convex ring formed on the inner wall surface of round hole, so that it can completely match handle and prevent falling off;The entire surface of the hollow sleeve body is covered with a rough surface formed by shallow convex lines, and the surface of the hollow sleeve body further forms a spiral pattern, and a plurality of through holes are arranged in a regular or irregular manner. This use achieves the effects of comfortable hand feeling, slip resistance, durability, aesthetics, easy to turn the racket, and so on. Customized printing can be performed on the reduced diameter portion or the entire handle sleeve surface to highlight personal style characteristics.

The present invention relates to a padel racket that is strung on its two striking surfaces instead of being solid. Thus, the resulting racket has the following elements: A) a handgrip or gripping handle covered by a grip adapted in size to the player, in order to control muscle tension and allow smooth wrist movement; B) the heart or throat of the racket provided with a bridge and reinforcement, which acts as a connecting link between the handgrip and the head and does not present any distinctive features in the present invention; and C) two striking surfaces or faces which in the present invention are strung, so that both faces are configured by a double string network system, each of the faces being a network pattern or grid parallel to the opposite face.

A racket frame includes a handle and a head. The head includes a ring frame, a plurality of protruding structures arranged on the ring frame, and a plurality of resistance-reducing structures arranged on the ring frame. The ring frame forms a plurality of through holes. Each protruding structure has two flanges respectively located on the front and back sides of the through holes, and the flanges define a wide slot. Each resistance-reducing structure has two side walls respectively located on the front and back sides of the through holes, and the side walls define a narrow slot. The through holes allow the net to be directly arranged without using plastic nails. The design that the width of the narrow slot is smaller than the wide slot allows the side walls to closely adhere to the net segment, so that the wind resistance can be greatly reduced and the interference during the swing can be avoided.

This invention discloses a device for cutting elastic strings of a specified length for stringing tennis and badminton rackets. The invention relates to the technical field of cutting elastic string sections of a specified length from a rolled elastic string. A stepper motor's output shaft extends forward through the front panel, and a drive wheel is connected to its extended end. The drive wheel is located between a second guide seat and a cutter A. A clamping assembly is positioned directly above the drive wheel. Inside the housing, a servo motor and two guide posts are fixed to its bottom panel. A lifting slider is slidably mounted between the two guide posts. A short connecting rod is hinged to the lifting slider, and a long connecting rod is hinged to the lower end of the short connecting rod. The lower end of the long connecting rod is fixed to the output shaft of the servo motor. A connecting plate extends forward through the front panel of the housing, and a cutter B is fixed to its extended end. Cutter B is located above cutter A. The advantages of this invention are: improved efficiency in cutting elastic string sections and higher cutting accuracy.

The application belongs to the technical field of sports equipment, and particularly relates to an anti-fatigue badminton racket rod based on three-dimensional woven composite material and a manufacturing method, which comprises a net frame, a racket rod and a handle connected in sequence, and the net frame, the racket rod and the handle are integrally formed into a continuous whole member by three-dimensional woven composite material; the three-dimensional woven composite material comprises a reinforcing body and a matrix, the reinforcing body is a carbon fiber three-dimensional woven preform, and the matrix is modified epoxy resin; the fiber volume content of the racket rod is 55%-65%, the application constructs a fiber space interlocking network through a four-way weaving structure, eliminates interlayer interfaces and splicing stress concentration in combination with an integrated forming process, and improves the anti-fatigue performance, anti-torsion stiffness and interlayer bonding strength of the racket rod; through optimization of the fiber volume content and a stepped curing process, the best balance of strength, formability and fatigue life is achieved, and the technical problems of easy delamination, poor anti-fatigue performance and low connection reliability of a traditional laminated material badminton racket rod are solved.

A spin device includes a first surface with an inner edge and an outer edge, wherein the outer edge of the first surface is convex; a second surface with an inner edge and an outer edge, wherein the outer edge of the second surface is convex; a third surface connecting the outer edge of the first surface to the outer edge of the second surface, wherein the third surface is concave and configured to contact a throat of a racket; and a fourth surface connecting the inner edge of the first surface to the inner edge of the second surface, wherein the fourth surface defines a recess configured to receive an outer surface of a bearing.

This invention discloses an integrated badminton racket and its manufacturing method. The integrated badminton racket includes a frame, a shaft, a connecting sleeve, and a handle. The front end of the shaft is connected to the frame, and the shaft is made of carbon fiber. The connecting sleeve fits onto the rear end of the shaft. The inner wall of the connecting sleeve and the outer rear end wall of the shaft are engaged and integrally fixed together by a first locking position and a first locking protrusion. By pre-fabricating and curing the connecting sleeve, the frame, shaft, and handle are formed again. The inner wall of the connecting sleeve and the outer rear end wall of the shaft are engaged by a first locking position and a first locking protrusion, and the inner wall of the handle and the outer wall of the connecting sleeve are engaged by a second locking position and a second locking protrusion. This makes the connection between the shaft and the handle more stable and less prone to detachment, improving product quality, greatly extending the product's service life, and significantly increasing production efficiency, which is conducive to increasing production capacity. At the same time, the overall weight of this product is lighter and the feel is better.

This invention discloses an automatic damping adjustment system and method for a tennis, badminton, and squash racket stringing machine turntable. The invention relates to the technical field of adjusting the damping between the turntable and a hollow fixed column. An electromagnetic block (6) is fixed to the top surface of a base (1) inside the hollow fixed column (2). The electromagnetic block (6) is connected to a current adjustment module (7), which is connected to a controller (8). An angle sensor (9) is fixed to the top surface of the base (1). The input shaft of the angle sensor (9) faces upwards, and an encoding wheel (10) is fixed to its extension end. The outer cylindrical surface of the encoding wheel (10) contacts the outer cylindrical surface of the turntable (4). The angle sensor (9) is in contact with the controller (8). The beneficial effects of this invention are: effectively preventing the turntable from shaking randomly during racket stringing and improving the quality of racket stringing.

To provide a badminton racket 2 by which a variation of trajectories of a shuttle can be suppressed in shots the hit points of which are closer to a bottom 26.SOLUTION: A badminton racket 2 has a shaft 4, a grip 10 in which a portion of the shaft 4 closer to a butt end 20 is inserted, and a frame 6 attached to a portion of the shaft 4 closer to a tip end 22. An out-of-plane primary natural frequency ωo1 (Hz) and an out-of-plane secondary natural frequency ωo2 (Hz) in the natural vibration of the badminton racket 2 satisfies a following equation (1): ωo2≤2.5×ωo1+23.0 (1). A favorable out-of-plane primary natural frequency ωo1 is 60 Hz or more.SELECTED DRAWING: Figure 1

This invention relates to the field of tennis racket technology, specifically to a racket, its manufacturing process, and its application. The racket includes a racket body and a racket tube, which are detachably connected by a fixing component. The racket body and tube are equipped with counterweight components to adjust their mass and center of gravity. This invention utilizes a detachable racket body and tube design, allowing for replacement of damaged parts during use, saving maintenance costs. Before use, the user can disassemble the racket body and tube and adjust their weight using the counterweight components to accommodate different users' strengths, increasing the racket's applicability. Furthermore, the center of gravity can be adjusted according to the weight of the racket body and tube to suit different playing styles.

A paddle head guard system may include a paddle head guard sized to at least partially cover an outer edge portion of a paddle head. The guard may include a moldable and hardenable band configured to be hardened after being wrapped over the outer edge portion of the paddle head.

This provides a grip structure for badminton rackets. [Solution] The grip structure includes a main body 10, a front sleeve 20, and an end cap 30. The main body is a hollow tubular body, and has a lumen and a shaft passage 13 inside. An extension tube is connected to the end of the shaft passage, and an impact-absorbing bush 40 is fitted around the outer circumference of the extension tube. The shaft is inserted into the shaft passage and the extension tube and fixed in place. The main body is a component integrally molded by injection molding, and the main body and the shaft passage are integral components with each other. When hitting the ball, the external force from the shaft is directly transmitted to the main body, providing the user with a firm feedback sensation. The lumen and impact-absorbing bush work together to suppress and reduce vibration. The grip also includes a reinforcing tube 50 positioned between the front cone portion 11 and the front sleeve of the main body.

A spin device includes a first surface with an inner edge and an outer edge, wherein the outer edge of the first surface is convex; a second surface with an inner edge and an outer edge, wherein the outer edge of the second surface is convex; a third surface connecting the outer edge of the first surface to the outer edge of the second surface, wherein the third surface is concave and configured to contact a throat of a racket; and a fourth surface connecting the inner edge of the first surface to the inner edge of the second surface, wherein the fourth surface defines a recess configured to receive an outer surface of a bearing.

The application provides a badminton racket plug, a middle tube and a manufacturing method of a badminton racket. The plug comprises a top part and a lower part. The top part of the plug is in a linear shape. The lower part of the plug is arranged in the middle of the linear shape. An inner wall of one end of the middle tube is provided with an internal thread. An outer diameter of the lower part of the plug is larger than an inner diameter of the internal thread. The lower part of the plug is tightly matched with the internal thread in a screwed manner. An external thread corresponding to the internal thread is formed on a surface of the lower part of the plug after the matching. The top part of the plug is used for inserting into both ends of a racket frame preform. The application has the following advantages: the ability of the middle tube to rotate and adjust along the racket frame preform can be reserved. The stiffness mark of the middle tube can be on the front surface of the racket frame through rotation. The plug is matched with the middle tube in a screwed manner. The sealing between the lower part of the plug and the internal thread is good. There is no softening problem caused by a high-temperature curing process in subsequent processes due to gluing. When the stiffness of the middle tube is not suitable, the middle tube can be separated from the plug through reverse rotation, so that the middle tube can be replaced.

This invention relates to the field of racket technology, providing a racket blade and its manufacturing method. The racket blade has a friction layer; the friction layer has a textured surface; the friction layer is made of a foamed film material. This invention manufactures a Peak racket, including a racket blade and a handle. The racket blade comprises a core layer, a surface layer, and a friction layer; wherein the core layer is foamed polypropylene, the surface layer is polypropylene or carbon fiber composite polypropylene, and the friction layer is a foamed film material. The foamed film of the friction layer is hot-pressed to form surface textures, improving the racket's wear resistance.

A racket 1 for playing padel tennis including a handle 2 and a head 3 which includes a bridge portion 4 connecting the head to the handle. The head includes first and second ball-striking faces 5 in m

This invention relates to the field of badminton racket technology, specifically to a telescopic badminton racket handle structure, comprising at least a racket shaft, a handle, a fixing sleeve, and a first locking member. The handle has a receiving cavity into which the racket shaft extends. The fixing sleeve is fitted onto the outer wall of the end of the racket shaft that extends into the receiving cavity, and the outer surface of the fixing sleeve has a conical structure. The first locking member is fixedly assembled at a first opening of the receiving cavity, and the first locking member has a second inner sidewall adapted to the outer surface of the fixing sleeve. When the racket shaft is extended, it is stretched away from the handle, and the fixing sleeve moves synchronously with the racket shaft and is nested within the first locking member. The second inner sidewall of the first locking member abuts against the outer surface of the fixing sleeve, locking the racket shaft and handle together. When the racket shaft is retracted, it is pushed towards the handle, and the fixing sleeve disengages from the first locking member as the racket shaft moves. The telescopic badminton racket handle structure provided by this invention has a simple overall structure and is easy to operate.

A fiber composite racquet may include a loop providing a head portion of the fiber composite racquet. The loop is formed from a rolled sheet wound about a centerline by at least 720 degrees. The head portion further includes at least one of (1) a layer joined to the rolled sheet along a fold and sandwiched between adjacent overlapping portions of the rolled sheet and (2) a completely surrounded aperture in the rolled sheet. The head portion includes a fiber composite material.

A pickleball paddle having a perimeter weighting system to improve performance characteristics and / or to provide swing weighting. The weighting system may include flexible weight strips disposed in recesses formed about a perimeter of the paddle. Alternatively, the weighting system may include slidable weights disposed in one or more channels. The weighting system may further include handle weighting to provide swing weighting. The at least one weight can have a relatively high mass, sufficient to noticeably alter CG of the paddle.

A fiber composite racquet may include a loop providing a head portion of the fiber composite racquet. The loop is formed from a rolled sheet wound about a centerline by at least 720 degrees. The head portion further includes at least one of: (1) a layer joined to the rolled sheet along a fold and sandwiched between adjacent overlapping portions of the rolled sheet, and (2) a completely surrounded aperture in the rolled sheet. The head portion includes a fiber composite material.

A string for a racket includes a filament. The filament includes a polymer matrix and carbon nanotubes dispersed in the polymer matrix. The polymer matrix is formed from one thermoplastic polymer or two or more thermoplastic polymers compatible with each other. A racket includes the string for a racket. A method of producing the string for a racket includes: dispersively mixing the carbon nanotubes into a first thermoplastic polymer; obtaining a thermoplastic composition by mixing the first thermoplastic polymer, in which the carbon nanotubes are dispersed, and a second thermoplastic polymer compatible with the first thermoplastic polymer; and obtaining the filament by melt-spinning the thermoplastic composition.

The invention relates to a racket (1) which comprises an outer element (2) and an inner element (3), wherein the racket (1) additionally comprises either two intermediate elements (4) and a core element (5) or a central element (25), which comprises a core portion (26) and two intermediate portions (27), wherein the vertical layer structure of the outer frame region is formed by the outer element (2) and the inner element (3), and the vertical layer structure of the racket core is formed by the inner element (3) and the core element (5) or the core portion (26), and the vertical layer structure of the two throat portions is formed by the outer element (2) and in each case one intermediate element (4) or in each case one intermediate portion (27), and the vertical layer structure of the racket handle is formed at least partially by the outer element (2) and the two intermediate elements (4) or the handle portion (28).

The invention relates to a racquet for playing padel tennis or similar games including a handle and a head which head includes an intermediate bridge portion connecting the head to the handle, the head including first and second ball-striking faces for striking resilient balls in mutually parallel planes The handle and head are moulded together from resin and including fibres forming a composite material in a single monocoque construction. First and second hollow channels are provided arranged on each side of the centreline in the head and each hollow channel extending along a portion of an outside edge of the head and inwardly from a portion of the outside edge of the head towards the centreline of the head and defining first and second side walls (17, 17a) in between the first and second ball striking faces, wherein the first and second hollow channels are located at the intermediate bridge portion and meet to form a continuous hollow, or through hole, extending from a first edge portion, on one side of the head, to a second edge portion on an opposition side of the head, and that the first and second side walls (17, 17a) are flared with respect to each other.

This utility model discloses a racket with surface-emitting light, relating to the field of racket technology. It includes a racket body and a light-emitting component. The racket body comprises a shell made of a light-transmitting material and an inner core with a built-in light-emitting component. The shell surface is made of a light-transmitting material and / or has multiple light-transmitting holes. The inner core has light-transmitting holes corresponding to the surface. The light-emitting component is embedded in the inner core, and light diffuses outward through the light-transmitting holes in the inner core and the light-transmitting structure of the shell, achieving full-area surface illumination. This utility model solves the problem of existing illuminated rackets only emitting light from the sides and having poor visual appeal by using the embedded light-emitting component and the light-transmitting structure in synergy. It also enhances structural stability and improves the enjoyment of the sport.

A racket mounting system includes an axially supporting shaft. A support head is coupled to a first end of the shaft and is perpendicular to the shaft. A ratchet is slidably coupled to the shaft, away from the first end. The ratchet is perpendicular to the shaft and parallel to the support head. A distance is formed between the ratchet and the support head for receiving the racket and for facilitating access to the string bed for stringing. The shaft includes a shaft head and a shaft throat; the shaft head and the shaft throat are attached to each other to form axial support for the support head and the ratchet.