Stable structure and badminton racket thereof

Abstract

The invention discloses a stabilizing structure and a badminton racket thereof, and belongs to the technical field of sports goods, the stabilizing structure comprises a T-shaped joint, and the T-shaped joint is provided with a horizontal arm and a vertical rod; flat slots are formed in the two ends of the horizontal arm, and a vertical slot is formed in the vertical rod; a fixing assembly is arranged in the T-shaped connector, preliminary positioning of the racket rod is completed through clamping cooperation of the inserting column and the vertical inserting groove, the double hemispherical ends of the jacking piece act on the clamping groove and the locking bolt correspondingly, and axial locking is achieved through elastic compression; the conical surface design of the locking bolt synchronously triggers locking of the inserting column in the screwing process, the annular groove in the side wall of the locking bolt is clamped with the jacking block to form anti-retreating self-locking, the jacking column converts axial pressure of the bolt into radial clamping force on the inserting column, and the jacking column is matched with the continuous pre-tightening effect of the elastic pressing piece, so that the locking effect of the inserting column is improved, and the anti-retreating self-locking effect is achieved. When the racket frame inserting block is meshed with the threaded column, the racket rod inserting column is completely restrained in the vertical inserting groove.

Description

Technical Field

[0001] The present invention relates to a stable structure and a badminton racket thereof, belonging to the technical field of sports goods. Background Art

[0002] The connection structures of traditional badminton rackets mainly adopt bonding or single-thread fastening methods, which have obvious defects: on the one hand, although the bonding process can achieve initial fixation, the glue is prone to aging and cracking during long-term use; on the other hand, for the interface between the racket shaft and the joint relying solely on threaded connection, it is prone to looseness due to stress relaxation under high-frequency vibration, affecting the hitting stability. At the same time, the traditional connection method lacks a radial constraint design for the insertion column, and axial movement is likely to occur during powerful hitting such as smashing, so a stable structure and a badminton racket thereof are proposed. Summary of the Invention

[0003] Aiming at the above-mentioned existing technical deficiencies, the purpose of the present invention is to provide a stable structure and a badminton racket thereof, which realize the synchronous and rapid assembly of the racket frame, racket shaft and T-shaped joint, and eliminate the loosening hidden danger existing in traditional bonding or threaded connection.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a stable structure, including:

[0005] A T-shaped joint for connecting the racket frame and the racket shaft, the T-shaped joint is provided with a horizontal arm and a vertical rod extending downward from the central part of the horizontal arm;

[0006] Two insertion blocks, which are respectively fixed at both ends of the racket frame;

[0007] An insertion column, which is fixedly connected to the upper end of the racket shaft;

[0008] Wherein, flat slots are opened at both ends of the horizontal arm, a vertical slot with an opening facing downward is opened inside the vertical rod, and the two insertion blocks are respectively inserted into the two flat slots, and the insertion column is inserted into the vertical slot;

[0009] A fixing component for simultaneously fixing the insertion blocks and the insertion column is arranged inside the T-shaped joint.

[0010] Preferably, the fixing component includes:

[0011] Two bolt holes are opened on the horizontal arm and are located on both sides of the vertical rod;

[0012] Two locking bolts are respectively arranged in the two bolt holes, each locking bolt includes a threaded column and a pressing column, the threaded column and the pressing column are fixedly connected, and the threaded column of each locking bolt extends into the flat slot on the same side and meshes with the corresponding insertion block;

[0013] Two through holes are provided, and the two through holes are opened on the horizontal arm and located on both sides of the vertical rod, and the two through holes are vertically intersected with the bolt holes;

[0014] Wherein, a pressing member is arranged inside the through hole;

[0015] When the locking bolt is installed in the bolt hole, one end of the pressing member abuts against the side wall of the locking bolt, and the other end of the pressing member abuts against the side wall of the plugging column.

[0016] Preferably, the pressing member includes:

[0017] A first pressing block, the first pressing block is slidably connected inside the through hole, and one end of the first pressing block abuts against the side wall of the locking bolt;

[0018] A second pressing block, the second pressing block is slidably connected inside the through hole, and one end of the second pressing block abuts against the side wall of the plugging column;

[0019] Wherein, a sliding column is fixedly connected to the end of the first pressing block away from the locking bolt, and the sliding column is slidably connected inside the second pressing block through an elastic pressing member;

[0020] When the first pressing block and the second pressing block respectively press against the locking bolt and the plugging column, the elastic pressing member is in a state of being compressed by the first pressing block and the second pressing block.

[0021] Preferably, the outer diameter of the threaded column is smaller than the outer diameter of the pressing column, a conical surface is provided at the connection between the threaded column and the pressing column, an annular groove is opened on the side wall of the pressing column, and the end of the first pressing block close to the locking bolt is hemispherical.

[0022] Preferably, a clamping groove is opened on the side wall of the plugging column, and the second pressing block is clamped in the clamping groove.

[0023] Preferably, a limiting block is provided at one end of the rapping rod close to the plugging column, and a limiting groove is opened at the lower end of the vertical rod;

[0024] When the plugging column is inserted into the vertical slot, the limiting block is inserted into the limiting groove.

[0025] Preferably, a plurality of annular glue application grooves are uniformly opened on the surface of the plugging column.

[0026] Preferably, a glue injection channel is opened inside the plugging column, a glue guiding channel is opened inside the second pressing block and the sliding column, and a plurality of glue outlet holes are opened on the side wall of the sliding column;

[0027] When the hemispherical end of the second pressing block abuts in the clamping groove, the glue injection channel is communicated with the glue guiding channel;

[0028] When injecting glue into the glue injection channel, the glue flows along the glue guiding channel and the glue outlet hole into the through hole between the first pressing block and the second pressing block.

[0029] Preferably, a plurality of glue discharge grooves are formed on the outer wall of the second pressing block, and a glue supplement groove for communicating the card slot with the plurality of glue coating grooves is formed on the side wall of the insertion column;

[0030] When the hemispherical end of the second pressing block abuts against the card slot, the glue discharge groove communicates with the glue supplement groove.

[0031] Preferably, a badminton racket includes the stable structure described in any one of the above technical solutions.

[0032] Compared with the prior art:

[0033] 1. The present invention uses the clamping cooperation of the insertion column and the vertical insertion slot to complete the preliminary positioning of the racket rod. The double hemispherical ends of the pressing member act on the card slot and the locking bolt respectively, and the axial locking is realized through elastic compression; the conical surface design of the locking bolt triggers the locking of the insertion column synchronously during the tightening process, and the clamping of the side wall ring groove of the locking bolt and the pressing block forms anti-back-off self-locking, while the pressing column converts the axial pressure of the bolt into the radial clamping force on the insertion column. With the continuous pre-tightening effect of the elastic pressing member, while the racket frame insertion block is meshed with the threaded column, the racket rod insertion column is completely constrained in the vertical insertion slot, realizing the synchronous and rapid assembly of the racket frame, racket rod and T-shaped joint, and eliminating the loosening hidden danger existing in the traditional bonding or threaded connection.

[0034] 2. The present invention forms a glue penetration network by arranging an annular glue coating groove on the surface of the insertion column, cooperating with the internal glue injection channel and the glue guiding structure of the pressing assembly. When the glue is injected, the glue guiding channel guides the glue to fill the gap between the pressing blocks to form a permanent cured connection. At the same time, the excess glue is evenly distributed to all the annular glue coating grooves through the glue discharge groove and the glue supplement groove, not only improving the anti-loosening performance through the chemical adhesion force, but also enhancing the radial pressing force by using the solidified colloid, so that the mechanical locking and chemical bonding produce a synergistic effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the present invention.

[0036] Figure 2 It is an overall exploded view of the present invention.

[0037] Figure 3 It is an overall cross-sectional view of the present invention.

[0038] Figure 4 It is an overall cross-sectional exploded view of the present invention.

[0039] Figure 5 It is a cross-sectional view of the first pressing block, the second pressing block and the sliding column of the present invention.

[0040] Figure 6 This is a cross-sectional view of the plug post, locking bolt and pressing member of the present invention.

[0041] Figure 7 It is Figure 6 an enlarged view of portion A of

[0042] Figure 8 This is a cross-sectional view of the plug post, pressing post, first pressing block and second pressing block of the present invention.

[0043] In the figure:

[0044] 1. T-shaped joint;

[0045] 101. Horizontal arm, 102. Vertical rod, 103. Horizontal slot, 104. Vertical slot, 105. Bolt hole, 106. Through hole;

[0046] 2. Racket frame, 3. Racket rod, 4. Plug block;

[0047] 5. Plug post;

[0048] 501. Card slot, 502. Glue application groove, 503. Glue injection channel, 504. Glue replenishment groove;

[0049] 6. Locking bolt;

[0050] 601. Threaded post, 602. Pressing post, 603. Tapered surface, 604. Ring groove;

[0051] 7. Pressing member;

[0052] 701. First pressing block, 702. Second pressing block, 703. Sliding post, 704. Elastic pressing member, 705. Glue guiding channel, 706. Glue outlet hole, 707. Glue discharging groove;

[0053] 8. Positioning block, 9. Positioning groove. Detailed implementation manners

[0054] The following uses specific embodiments to illustrate the present invention, but it is not a limitation to the invention.

[0055] Embodiment 1

[0056] As Figures 1 - 8As shown in the figure, in this embodiment, a stable structure is provided, including a T-shaped joint 1 for connecting the racket frame 2 and the racket shaft 3. The T-shaped joint 1 is provided with a horizontal arm 101 and a vertical rod 102 extending downward from the central part of the horizontal arm 101. The horizontal arm 101 and the vertical rod 102 are integrally formed. Plug-in blocks 4 are respectively fixed at both ends of the racket frame 2. The upper end of the racket shaft 3 is fixedly connected with a plug-in column 5. Among them, flat slots 103 are opened at both ends of the horizontal arm 101, and a vertical slot 104 with an opening facing downward is opened inside the vertical rod 102. The two plug-in blocks 4 are respectively inserted into the two flat slots 103, and the plug-in column 5 is inserted into the vertical slot 104. A fixing component is arranged inside the T-shaped joint 1 for simultaneously fixing the plug-in blocks 4 and the plug-in column 5.

[0057] Working process:

[0058] During assembly, first, align the plug-in blocks 4 at both ends of the racket frame 2 with the flat slots 103 at both ends of the horizontal arm 101 of the T-shaped joint 1 and horizontally push them into the flat slots 103. Subsequently, vertically insert the plug-in column 5 at the upper end of the racket shaft 3 into the vertical slot 104 of the vertical rod 102. At this time, the connecting components are initially positioned. By operating the fixing component inside the T-shaped joint 1, the plug-in blocks 4 and the plug-in column 5 are tightly pressed together in the slots, completing the integrated fixation of the racket frame, racket shaft and T-shaped joint, and forming a badminton racket structure with high rigidity and no looseness.

[0059] Embodiment Two

[0060] As Figures 3 - 8 shown, on the basis of Embodiment One, in this embodiment, the fixing component includes two bolt holes 105. The two bolt holes 105 are opened on the horizontal arm 101 and are located on both sides of the vertical rod 102. Locking bolts 6 are respectively arranged in the two bolt holes 105. The locking bolt 6 includes a threaded column 601 and a pressing column 602. The threaded column 601 and the pressing column 602 are fixedly connected, and the threaded column 601 of each locking bolt 6 extends into the flat slot 103 on the same side and meshes with the corresponding plug-in block 4. Two through holes 106 are opened on the horizontal arm 101 and are located on both sides of the vertical rod 102, and the through holes 106 are vertically intersected with the bolt holes 105 on the same side. Among them, a pressing member 7 is arranged inside the through hole 106.

[0061] When the locking bolt 6 is installed in the bolt hole 105, one end of the pressing member 7 abuts against the side wall of the locking bolt 6, and the other end of the pressing member 7 abuts against the side wall of the plug-in column 5.

[0062] The pressing member 7 includes a first pressing block 701 and a second pressing block 702. The first pressing block 701 is slidably connected inside the through hole 106, and one end of the first pressing block 701 abuts against the side wall of the locking bolt 6. The second pressing block 702 is slidably connected inside the through hole 106, and one end of the second pressing block 702 abuts against the side wall of the plug-in column 5.

[0063] One end of the first pressing block 701 away from the locking bolt 6 is fixedly connected with a sliding column 703, and the sliding column 703 is slidably connected inside the second pressing block 702 through an elastic pressing member 704;

[0064] When the first pressing block 701 and the second pressing block 702 are respectively pressed against the locking bolt 6 and the insertion column 5, the elastic pressing member 704 is in a state of being compressed by the first pressing block 701 and the second pressing block 702.

[0065] The outer diameter of the threaded column 601 is smaller than the outer diameter of the pressing column 602. A conical surface 603 is provided at the connection between the threaded column 601 and the pressing column 602. An annular groove 604 is formed on the side wall of the pressing column 602. One end of the first pressing block 701 close to the locking bolt 6 is hemispherical;

[0066] When the locking bolt 6 is screwed into the bolt hole 105, the conical surface 603 squeezes the first pressing block 701 to move. Finally, the hemispherical end of the first pressing block 701 is clamped in the annular groove 604.

[0067] A clamping groove 501 is formed on the side wall of the insertion column 5. The second pressing block 702 is clamped in the clamping groove 501. One end of the second pressing block 702 clamping the insertion column 5 is hemispherical, and the shape of the clamping groove 501 is adapted to the hemispherical end of the second pressing block 702.

[0068] The installation process is as follows:

[0069] First, insert the insertion column 5 into the vertical insertion slot 104, align the clamping groove 501 with the through hole 106. At this time, the racket handle 3 is connected to the T-shaped joint 1;

[0070] Put the pressing member 7 into the through hole 106, and make the hemispherical end of the second pressing block 702 abut into the inside of the clamping groove 501. At this time, the pressing member 7 is located between the bolt hole 105 and the vertical insertion slot 104;

[0071] Insert the insertion block 4 of the racket frame 2 into the horizontal insertion slot 103;

[0072] Put the locking bolt 6 into the bolt hole 105, and turn the locking bolt 6, so that the threaded column 601 of the locking bolt 6 extends into the horizontal insertion slot 103 on the same side and meshes with the corresponding insertion block 4;

[0073] During the screwing process of the locking bolt 6, the hemispherical end of the first pressing block 701 is first pressed by the conical surface 603, causing the first pressing block 701 to compress the elastic member 704 towards the second pressing block 702 until the hemispherical end of the first pressing block 701 slides from the conical surface 603 to the side wall of the pressing column 602. When the locking bolt 6 is installed in place, the hemispherical end of the first pressing block 701 will abut against the inside of the annular groove 604. In this state, under the cooperation of the annular groove 604 and the hemispherical end of the first pressing block 701, it can prevent the locking bolt 6 from unscrewing. At the same time, under the cooperation of the hemispherical end of the second pressing block 702 and the card slot 501, it can play a role in stabilizing the insertion column 5 inside the vertical slot 104.

[0074] In addition, the depth of the annular groove 604 is less than the depth of the card slot 501. The elastic member 704 is a rubber cushion block. The thickness of the rubber cushion block is less than the depth of the card slot 501 and greater than the depth of the annular groove 604. In this way, under the elastic action of the rubber cushion block, the hemispherical end of the first pressing block 701 can move from the conical surface 603 to the inside of the annular groove 604. At the same time, in the process of the table tennis racket patting the ball, due to the thickness of the rubber cushion block, its compression amount cannot be greater than the depth of the card slot 501, that is, the hemispherical end of the second pressing block 702 cannot move out of the card slot 501, and the hemispherical end of the second pressing block 702 will always be clamped inside the card slot 501, thus ensuring the stability of the insertion column 5 inserted in the vertical slot 104.

[0075] A limiting block 8 is provided at one end of the racket rod 3 close to the insertion column 5, and a limiting groove 9 is opened at the lower end of the vertical rod 102; when the insertion column 5 is inserted into the vertical slot 104, the limiting block 8 is inserted into the limiting groove 9. Under the cooperation of the limiting block 8 and the limiting groove 9, it can ensure that the card slot 501 is aligned with the through hole 106.

[0076] Embodiment III

[0077] As Figures 5 - 8 shown, on the basis of Embodiment II, in this embodiment, a plurality of annular glue application grooves 502 are evenly opened on the surface of the insertion column 5.

[0078] A glue injection channel 503 is opened inside the insertion column 5, a glue guiding channel 705 is opened inside the second pressing block 702 and the sliding column 703, and a plurality of glue outlet holes 706 are opened on the side wall of the sliding column 703;

[0079] When the hemispherical end of the second pressing block 702 abuts against the card slot 501, the glue injection channel 503 is communicated with the glue guiding channel 705;

[0080] When injecting glue into the glue injection channel 503, the glue flows along the glue guiding channel 705 and the glue outlet hole 706 into the through hole 106 between the first pressing block 701 and the second pressing block 702. After the glue solidifies, the first pressing block 701 and the second pressing block 702 are connected into a whole through the solidified glue.

[0081] A plurality of glue discharge grooves 707 are formed on the outer wall of the second pressing block 702, and a glue replenishing groove 504 for communicating the clamping groove 501 with the plurality of glue coating grooves 502 is formed on the side wall of the plugging post 5;

[0082] When the hemispherical end of the second pressing block 702 abuts against the clamping groove 501, the glue discharge groove 707 is communicated with the glue replenishing groove 504. After the through hole 106 between the first pressing block 701 and the second pressing block 702 is filled with glue, the excess glue will flow along the glue discharge groove 707 to the opening position of the clamping groove 501, and then the glue will flow downward along the glue replenishing groove 504 into the interior of each glue coating groove 502 to ensure that the glue in the glue coating groove 502 is in a full state.

[0083] Embodiment 4

[0084] The present application also provides a badminton racket, including the stable structure of any one of the above embodiments.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or equivalently replaced. Any modification or partial replacement without departing from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.

Claims

1. A stable structure, characterized in that: include: A T-shaped joint (1) for connecting the racket frame (2) and the racket shaft (3), wherein the T-shaped joint (1) is provided with a horizontal arm (101) and a vertical rod (102) extending downward from a central portion of the horizontal arm (101); Two plug-in blocks (4), the two plug-in blocks (4) are respectively fixed at two ends of the racket frame (2); A plug-in column (5), wherein the plug-in column (5) is fixedly connected to the upper end of the racket rod (3); Wherein, both ends of the horizontal arm (101) are provided with flat slots (103), the interior of the vertical rod (102) is provided with a vertical slot (104) with an opening facing downward, the two plug-in blocks (4) are respectively plugged into the two flat slots (103), and the plug-in column (5) is plugged into the vertical slot (104); A fixing assembly for simultaneously fixing the plug-in block (4) and the plug-in column (5) is arranged inside the T-shaped joint (1).

2. A stabilizing structure according to claim 1, characterized in that: The fixing assembly comprises: Two bolt holes (105), the two bolt holes (105) are opened on the horizontal arm (101) and are located on both sides of the vertical rod (102); Two locking bolts (6), the two locking bolts (6) are respectively arranged in the two bolt holes (105), the locking bolts (6) include a threaded column (601) and a pressing column (602), the threaded column (601) and the pressing column (602) are fixedly connected, and the threaded column (601) of each locking bolt (6) extends into the flat slot (103) on the same side and engages with the corresponding plug-in block (4); Two through holes (106), the two through holes (106) are opened on the horizontal arm (101) and are located on both sides of the vertical rod (102), and the two through holes (106) intersect the bolt hole (105) vertically; Wherein, a pressing piece (7) is arranged inside the through hole (106); When the locking bolt (6) is installed in the bolt hole (105), one end of the pressing piece (7) abuts against the side wall of the locking bolt (6), and the other end of the pressing piece (7) abuts against the side wall of the plug-in column (5).

3. A stabilizing structure according to claim 2, characterized in that: The pressing member (7) comprises: A pressing block (701), wherein the pressing block (701) is slidably connected to the interior of the through hole (106), and one end of the pressing block (701) is against the side wall of the locking bolt (6); A second pressing block (702), wherein the second pressing block (702) is slidably connected to the interior of the through hole (106), and one end of the second pressing block (702) is against the side wall of the plug-in column (5); Among them, one end of the top pressure block (701) away from the locking bolt (6) is fixedly connected with a sliding column (703), and the sliding column (703) is slidably connected to the inside of the top pressure block (702) through a spring-pressing member (704).

4. A stabilizing structure according to claim 3, characterized in that: The outer diameter of the threaded column (601) is smaller than the outer diameter of the top pressure column (602); a conical surface (603) is provided at the connection between the threaded column (601) and the top pressure column (602); an annular groove (604) is provided on the side wall of the top pressure column (602); and the end of the top pressure block (701) close to the locking bolt (6) is hemispherical.

5. A stabilizing structure according to claim 4, characterized in that: A slot (501) is provided on the side wall of the plug-in column (5), and the second pressing block (702) is snap-fitted into the slot (501).

6. A stabilizing structure according to claim 5, characterized in that: A limiting block (8) is provided at one end of the racket rod (3) close to the plug-in column (5), and a limiting groove (9) is provided at the lower end of the vertical rod (102); When the plug-in column (5) is plugged into the interior of the vertical slot (104), the limiting block (8) is plugged into the interior of the limiting groove (9).

7. A stabilizing structure according to claim 5, characterized in that: A plurality of ring-shaped glue coating grooves (502) are evenly arranged on the surface of the plug-in column (5).

8. A stabilizing structure according to claim 7, characterized in that: The plug-in column (5) is provided with a glue injection channel (503) inside, the second top pressure block (702) and the sliding column (703) are provided with a glue guide channel (705) inside, and the side wall of the sliding column (703) is provided with a plurality of glue outlet holes (706); When the hemispherical end of the second pressing block (702) is pressed against the inside of the clamping groove (501), the glue injection channel (503) is connected with the glue guide channel (705); When glue is injected into the glue injection channel (503), the glue liquid flows along the glue guide channel (705) and the glue outlet hole (706) into the through hole (106) between the top pressing block 1 (701) and the top pressing block 2 (702).

9. A stabilizing structure according to claim 8, characterized in that: The outer wall of the second pressing block (702) is provided with a plurality of glue discharge grooves (707), and the side wall of the plug-in column (5) is provided with a glue filling groove (504) for connecting the clamping groove (501) with the plurality of glue coating grooves (502); When the hemispherical end of the second pressing block (702) is pressed against the inside of the clamping groove (501), the glue discharge groove (707) is communicated with the glue replenishing groove (504).

10. A badminton racket, characterized in that: The invention comprises a stabilizing structure as described in any one of claims 1 to 9.

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