Dumbbell connector

Abstract

The utility model discloses a dumbbell connector which comprises a connecting rod and dumbbell rods detachably arranged at the two ends of the connecting rod, connecting sleeves are fixedly arranged on the inner circumferential walls of the two ends of the connecting rod, and internal threads are formed in the inner circumferential walls of the connecting sleeves. External threads matched with the internal threads of the connecting sleeves are formed in the peripheral walls of the two ends of the dumbbell rod, and the dumbbell rod is in threaded connection with the connecting sleeves at the corresponding ends; the peripheral wall of the connecting rod is sleeved with a foam sheath, and the peripheral wall of the middle of each dumbbell rod is sleeved with a handle sleeve. When the dumbbell-to-barbell conversion connector is used for conversion from a dumbbell to a barbell, the firmness of the whole connector structure and the use safety are effectively guaranteed, and the situation that a dumbbell rod falls off and hurts a trainee is effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of body -building apparatus accessories, especially a dumbbell connector. BACKGROUND

[0002] Barbells and dumbbells both belong to common body-building apparatus, and there is certain difference between the two: general barbells are used for double-hand training, are suitable for heavy weight training, and can increase strength and muscle mass more quickly; dumbbells are mainly used for single-hand training, can independently exercise unilateral muscle, help to improve muscle imbalance and improve coordination, so that the combination of dumbbells and barbells can comprehensively improve training effect. The dumbbell connector can realize the mutual conversion of barbells and dumbbells, the dumbbell rod can be used for dumbbell training, and the two dumbbell rods can be used for barbell training after being installed at the two ends of the longer connecting rod. However, the dumbbell rod is connected with the connecting rod through the connecting head at the present stage, the connecting head is only inserted and matched with the connecting rod, and the connection is not firm, especially when barbell training is carried out, the connecting head is prone to being separated from the connecting rod, and the barbell piece is prone to falling down together with the dumbbell rod and bruising the trainer. SUMMARY

[0003] The utility model aims at providing a dumbbell connector, and solves the technical problems mentioned in the background.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme:

[0005] The utility model relates to a dumbbell connector, which comprises a connecting rod and detachably arranged dumbbell rods at the two ends of the connecting rod, a connecting sleeve is fixedly arranged on the inner circumferential wall of the two ends of the connecting rod, an internal thread is formed on the inner circumferential wall of the connecting sleeve, external threads matched with the internal threads of the connecting sleeve are formed on the outer circumferential walls of the two ends of the dumbbell rods, and the dumbbell rods are screw-connected with the connecting sleeves at the corresponding ends.

[0006] Further, a foam sheath is sleeved on the outer circumferential wall of the connecting rod, and handle sleeves are sleeved on the outer circumferential walls of the middle parts of the dumbbell rods.

[0007] Further, the connecting sleeve is made of plastic.

[0008] Further, the outer circumferences of the two ends of the connecting rod are provided with rounded edges, and the two ends of the connecting rod are subjected to edge rolling and closing treatment.

[0009] Further, a plurality of anti-disengagement convex rings are uniformly and spacedly fixed on the inner circumferential walls of the two ends of the connecting rod, and the inner ends of the anti-disengagement convex rings are embedded in the interiors of the connecting sleeves.

[0010] Further, the outer peripheral wall of the connecting rod is symmetrically provided with a nut near the inner end of the connecting sleeve, the nut is provided with a limiting screw in threaded connection, one end of the limiting screw is located outside the nut and is fixedly provided with a screw handle, the other end of the limiting screw penetrates through the through hole provided on the connecting rod and extends to the inside of the connecting rod; the dumbbell rod is uniformly provided with a plurality of limiting holes matched with the limiting screw at the position near the end of the inside of the connecting rod.

[0011] Further, each limiting hole is specifically a long circular hole.

[0012] Further, the inner peripheral wall of the connecting rod is fixedly provided with a stop protruding ring, the inner diameter of the stop protruding ring is smaller than the outer diameter of the dumbbell rod, when the end of the dumbbell rod contacts the stop protruding ring, the position of the limiting hole is opposite to the limiting screw.

[0013] Compared with the prior art, the beneficial technical effects of the utility model are:

[0014] The utility model discloses when being used for dumbbell to barbell conversion, can fix the connection of two barbell rods with the connecting sleeve inside the connecting rod with the mode of threaded connection, and the connecting sleeve and the connecting rod are closely combined and can not easily separate, and the effective limiting of the connecting sleeve on the anti -disengagement protruding ring on the inner peripheral wall of the connecting rod further improves the connecting firmness of the connecting sleeve and the anti -disengagement protruding ring. The dumbbell rod and the connecting sleeve can not easily separate due to the threaded cooperation, and through the mutual cooperation of the limiting screw and the limiting hole, the situation that the dumbbell rod is loosened and rotates outward in the use process can be avoided, and the installation firmness of the dumbbell rod is further improved. Therefore, the utility model guarantees the firmness of the whole connector structure and the safety in use, effectively avoids the situation that the dumbbell rod falls and injures the training personnel. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model will be further described in connection with the drawings.

[0016] Figure 1 It is the cross section structure schematic view of the utility model embodiment one;

[0017] Figure 2 It is the connecting rod and dumbbell rod connection schematic view of the utility model embodiment one;

[0018] Figure 3 It is the cross section structure schematic view of the utility model embodiment two;

[0019] Figure 4 It is the connecting rod and dumbbell rod connection schematic view of the utility model embodiment two;

[0020] Figure 5 It isFigure 3 Enlarged view of point A in the middle;

[0021] Explanation of reference numerals in the attached diagram: 1. Connecting rod; 2. Dumbbell bar; 3. Connecting sleeve; 4. Foam sleeve; 5. Handle glove; 6. Anti-slip protrusion; 7. Nut; 8. Limiting screw; 9. Tightening handle; 10. Limiting hole; 11. Stop protrusion; 12. Rounded edge. Detailed Implementation

[0022] Example 1

[0023] like Figures 1-2 As shown, a dumbbell connector includes a connecting rod 1 and dumbbell bars 2 that are detachably mounted at both ends of the connecting rod 1.

[0024] Specifically: Connecting sleeves 3 are fixedly installed on the inner peripheral walls of both ends of the connecting rod 1. The connecting sleeves 3 are made of plastic, and their outer peripheral walls are fixedly fitted to the inner peripheral walls of the connecting rod. The inner peripheral walls of the connecting sleeves 3 are provided with internal threads, and the outer peripheral walls of both ends of the dumbbell rod 2 are provided with external threads that are compatible with the internal threads of the connecting sleeves 3.

[0025] In this example, both ends of the connecting rod 1 are provided with rounded edges 12, and the ends of the connecting rod are rolled to close the edges. Through these features, on the one hand, the rounded edge structure can prevent the ends of the connecting rod from causing unnecessary scratches to the user; on the other hand, rolling the edges of the connecting rod reduces the inner diameter of the ends, preventing the connecting sleeve from slipping outwards.

[0026] When this invention is used for barbell training, the two barbell bars 2 can be fixedly connected to the connecting sleeve inside the connecting rod by means of threaded connection. The connecting sleeve and the connecting rod will not easily separate, and the dumbbell bar and the connecting sleeve will not easily separate, thereby ensuring the robustness of the entire connector structure and the safety of use.

[0027] In addition, a foam sleeve 4 is fitted on the outer peripheral wall of the connecting rod 1, and a handle 5 is fitted on the middle outer peripheral wall of each dumbbell bar 2, thereby improving comfort during barbell and dumbbell training.

[0028] Example 2

[0029] like Figures 3-5 As shown, in this embodiment, without changing the other structures of Embodiment 1, a plurality of anti-detachment protrusions 6 are fixedly and evenly spaced at both ends of the inner peripheral wall of the connecting rod 1. The inner end of each anti-detachment protrusion 6 is embedded in the interior of the connecting sleeve 3. The anti-detachment protrusions 6 effectively limit the connection of the connecting sleeve 3, thereby further improving the connection firmness between the connecting sleeve and the anti-detachment protrusions.

[0030] In addition, in the embodiment, a nut 7 is symmetrically arranged on the outer peripheral wall of the connecting rod 1 near the inner end of the connecting sleeve 3, the limiting screw 8 is arranged on the nut 7 in threaded connection, one end of the limiting screw 8 is arranged in the radial direction of the connecting rod 1, the other end of the limiting screw 8 is arranged outside the nut 7 and fixedly arranged with a screw handle 9, and the limiting screw 8 is driven to rotate by rotating the screw handle 9. The other end of the limiting screw 8 penetrates the through hole arranged on the connecting rod 1 and extends to the inside of the connecting rod 1. The dumbbell rod 2 is uniformly arranged with a plurality of limiting holes 10 adapted to the limiting screw 8 near the end of the connecting rod 1 in the circumferential direction, and each limiting hole 10 is specifically arranged as an oblong hole.

[0031] The inner peripheral wall of the connecting rod 1 is fixedly arranged with a stop protruding ring 11, the inner diameter of the stop protruding ring 11 is smaller than the outer diameter of the dumbbell rod 2. When the dumbbell rod 2 is screwed into the inside of the connecting sleeve 3 until the end of the dumbbell rod 2 penetrates the connecting sleeve 3 and contacts the stop protruding ring 11, the position of the limiting hole 10 is opposite to the limiting screw 8. At this time, the limiting screw 8 is driven to move to the axis direction of the connecting rod by rotating the screw handle, until the end of the limiting screw is inserted into the limiting hole on the dumbbell rod, and the mutual cooperation of the limiting screw and the limiting hole can avoid the dumbbell rod from being loosened and rotated outward during use, and further improves the installation firmness of the dumbbell rod.

[0032] The above embodiment only describes the preferred mode of the present application, and does not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements of the technical scheme of the present application made by those skilled in the art shall fall within the protection scope determined by the claims of the present application.

Claims

1. A dumbbell connector characterized by: The utility model provides a detachable dumbbell rod, which comprises a connecting rod and detachable dumbbell rods arranged at both ends of the connecting rod, a connecting sleeve is fixedly arranged on the inner circumferential wall of both ends of the connecting rod, an internal thread is formed on the inner circumferential wall of the connecting sleeve, an external thread is formed on the outer circumferential wall of both ends of the dumbbell rod and is matched with the internal thread of the connecting sleeve, and the dumbbell rod is screwed with the connecting sleeve at the corresponding end.

2. The dumbbell connector of claim 1, wherein: A foam sheath is sleeved on the outer circumferential wall of the connecting rod, and a handle sleeve is sleeved on the outer circumferential wall of the middle part of each dumbbell rod.

3. The dumbbell connector of claim 1, wherein: The connecting sleeve is made of plastic.

4. The dumbbell connector of claim 1, wherein: The outer circumferential wall of both ends of the connecting rod is provided with a rounded edge, and the both ends of the connecting rod are subjected to edge rolling and closing treatment.

5. The dumbbell connector of claim 1, wherein: A plurality of anti-disengagement convex rings are uniformly and fixedly arranged on the inner circumferential wall of both ends of the connecting rod, and the inner end of each anti-disengagement convex ring is embedded in the inside of the connecting sleeve.

6. The dumbbell connector of claim 1, wherein: A nut is symmetrically fixedly arranged on the outer circumferential wall of the connecting rod near the inner end of the connecting sleeve, the nut is provided with a limiting screw rod which is screwed with the nut, one end of the limiting screw rod is located outside the nut and is fixedly provided with a screw handle, the other end of the limiting screw rod penetrates through a through hole formed on the connecting rod and extends into the inside of the connecting rod, and the end of the dumbbell rod located in the inside of the connecting rod is uniformly and circumferentially provided with a plurality of limiting holes which are matched with the limiting screw rod near the end part.

7. The dumbbell connector of claim 6, wherein: Each limiting hole is specifically a long circular hole.

8. The dumbbell connector of claim 7, wherein: A stop convex ring is fixedly arranged on the inner circumferential wall of the connecting rod, the inner diameter of the stop convex ring is smaller than the outer diameter of the dumbbell rod, and when the end part of the dumbbell rod is in contact with the stop convex ring, the position of the limiting hole is directly opposite to the limiting screw rod.

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