End face fastening device of combined dumbbell

Abstract

The utility model discloses an end face fastening device of a combined dumbbell, and particularly relates to the technical field of dumbbell end face fastening, the end face fastening device comprises a dumbbell handle rod, two fastening components are sleeved on the dumbbell handle rod, each fastening component comprises a lantern ring, the two lantern rings are respectively sleeved on two sides of the dumbbell handle rod, and the two lantern rings are respectively sleeved on two ends of the dumbbell handle rod. A plurality of arc-shaped sliding blocks are fixedly arranged on the inner walls of the two lantern rings, an arc-shaped inserting block is fixedly arranged on each arc-shaped sliding block, and a plurality of arc-shaped sliding grooves are formed in the outer walls of the two sides of the dumbbell handle rod. The arc-shaped sliding blocks and the arc-shaped inserting blocks on the two lantern rings are aligned with the arc-shaped sliding grooves to be inserted into the arc-shaped sliding grooves, when the lantern rings abut against dumbbell pieces, the lantern rings are rotated to drive the arc-shaped sliding blocks and the arc-shaped inserting blocks to be inserted into the branch grooves and the arc-shaped inserting grooves respectively, and then the lantern rings and the dumbbell handle rod can be connected together to fasten the dumbbell pieces. By means of clamping of the spring cotters and the clamping grooves, the connection firmness between the lantern ring and the dumbbell handle rod can be further improved, the structure is simple, and more time and labor are saved during operation.

Description

Technical Field

[0001] The utility model relates to the technical field of dumbbell end face fastening, in particular to an end face fastening device for a combined dumbbell. Background Art

[0002] Existing dumbbells vary in design depending on the type. They primarily include straight-handled dumbbells, modular dumbbells, curved-handled dumbbells, and fixed-handled dumbbells, allowing users to choose based on their preferences. Modular dumbbells typically consist of a handle and several weight plates, secured to the handle by a fastening mechanism to prevent the plates from loosening or slipping during exercise. Therefore, the quality of the fastening mechanism significantly impacts user safety when using the dumbbells.

[0003] For example, the end face fastening device of the combination dumbbell with the prior art publication number CN209154992U solves the problem of the dumbbell plates loosening and popping out at the locking part when the dumbbell is subjected to violent impact such as collision, causing harm to the user or others, by providing an end face fastening device.

[0004] However, the above-mentioned prior art still has the following problems when used: the above-mentioned combined dumbbell uses a threaded method to fasten the dumbbell plates, which may become loose and require the user to frequently tighten, which is very inconvenient to use. Based on this, the utility model provides a dumbbell handle locking device with good fastening performance. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an end face fastening device for a combined dumbbell, which is configured by aligning the arc-shaped sliders and the arc-shaped insert blocks on the two collars with the arc-shaped slots and inserting them, and rotating the collars to drive the multiple arc-shaped sliders and the multiple arc-shaped insert blocks to be inserted into the multiple branch slots and the multiple arc-shaped slots respectively, so that the collars and the dumbbell handle rod can be connected together to fasten the dumbbell plates, and with the help of the spring pin and the card slot, the connection firmness between the collars and the dumbbell handle rod can be further improved. The structure is simple, and the operation is more time-saving and labor-saving, so as to solve the problems arising from the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an end face fastening device for a combined dumbbell, comprising a dumbbell handle rod, wherein two fastening assemblies are sleeved on the dumbbell handle rod, each fastening assembly comprises a collar, and the two collars are respectively sleeved on both sides of the dumbbell handle rod, and a plurality of arc-shaped sliders are fixedly provided on the inner walls of the two collars, and an arc-shaped plug-in block is fixed on each arc-shaped slider, and a plurality of arc-shaped grooves are provided on the outer walls of both sides of the dumbbell handle rod, and a plurality of arc-shaped branch grooves are provided on each arc-shaped branch groove. The inner wall of each arc-shaped branch groove is provided with an arc-shaped slot adapted to the arc-shaped plug-in block, and the arc-shaped plug-in block is inserted in the arc-shaped slot for fixing the collar and the dumbbell handle rod, and two clamping assemblies are provided on the two collars for improving the connection firmness between the collar and the dumbbell handle rod.

[0007] In a preferred embodiment, two circular grooves are provided on the inner wall surfaces of the two rings, and the two clamping components include spring pins, which are respectively fixed in the two circular grooves. The outer wall surfaces on both sides of the dumbbell handle rod are provided with multiple clamping grooves adapted to the spring pins, and the spring pins are clamped with the clamping grooves. With the help of the spring pins, the connection firmness between the rings and the dumbbell handle rod can be further improved.

[0008] In a preferred embodiment, the multiple slots on both sides of the dumbbell handle are divided into two groups, and the slots in each group are distributed in a linear array, so as to be suitable for fixing different numbers of dumbbell plates.

[0009] In a preferred embodiment, the arcuate branch grooves on each arcuate slide groove are distributed in a linear array, so as to be suitable for fixing different numbers of dumbbell plates.

[0010] In a preferred embodiment, two receiving grooves are provided on the outer side wall surfaces of the two collars, and the spring latch extends into the receiving groove away from one end of the dumbbell handle rod, making it convenient for the user to pull the spring latch to move.

[0011] In a preferred embodiment, the two spring pins are provided with an embedding groove on the outer wall of one end of the dumbbell handle rod away from each receiving groove, and a threaded rod adapted to the embedding groove is threadedly connected in each receiving groove, which facilitates the fixing of the spring pins and eliminates the need to hold the spring pins by hand all the time, making it more labor-saving to use.

[0012] In a preferred embodiment, the outer side wall surfaces of the two collars are processed with a plurality of ridges to increase the friction of the outer walls of the collars.

[0013] The technical effects and advantages of this utility model are:

[0014] 1. The utility model aligns the arc-shaped sliders and the arc-shaped inserting blocks on the two collars with the arc-shaped sliding grooves and inserts them. When the collars abut against the dumbbell plates, the collars are rotated to drive the multiple arc-shaped sliders and the multiple arc-shaped inserting blocks to be inserted into the multiple branch grooves and the multiple arc-shaped slots respectively, so that the collars and the dumbbell handle rod are connected together to tighten the dumbbell plates. In addition, the spring latch is engaged with the card slot, which can further improve the connection firmness between the collars and the dumbbell handle rod. The utility model has a simple structure and is more time-saving and labor-saving to operate.

[0015] 2. By providing a threaded rod in each storage slot, when the user needs to separate the spring latch from the slot, the threaded rod can be twisted and inserted into the groove of the spring latch, thereby preventing the spring latch from automatically inserting into the slot. The user does not need to hold the spring latch with his hands all the time, which is more labor-saving to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the use of the dumbbell handle of the present invention;

[0018] Figure 3 This is a cross-sectional view of the dumbbell handle, arc-shaped slider and arc-shaped insert block of the present invention;

[0019] Figure 4 It is a side view of the collar of the present utility model;

[0020] Figure 5 This is a structural diagram of the spring latch and threaded rod of the utility model;

[0021] Figure 6 This is a cross-sectional view of the dumbbell handle of the present invention.

[0022] The accompanying drawings are marked as follows: 1. dumbbell handle; 2. fastening assembly; 3. arc-shaped slide groove; 4. arc-shaped branch groove; 5. arc-shaped slot; 6. snap-fit assembly; 7. circular groove; 8. storage groove; 9. embedding groove; 10. threaded rod; 11. convex strip;

[0023] 201, collar; 202, arc-shaped slider; 203, arc-shaped insert;

[0024] 601. Spring latch; 602. Card slot. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Refer to the instruction manual Figure 1-6 The present invention provides an end face fastening device for a combined dumbbell, comprising a dumbbell handle rod 1, wherein the dumbbell handle rod 1 is sleeved with two fastening components 2, each fastening component 2 comprises a collar 201, and the two collars 201 are sleeved on both sides of the dumbbell handle rod 1, and the inner walls of the two collars 201 are fixed with a plurality of arc-shaped sliders 202, and each arc-shaped slider 202 is fixed with an arc-shaped plug 203, and the outer walls of both sides of the dumbbell handle rod 1 are provided with a plurality of arc-shaped chutes 3, and each arc-shaped chutes 3 are provided with a plurality of arc-shaped branch grooves 4 (it is worth noting that the center distance between two adjacent arc-shaped branch grooves 4 is the thickness of a dumbbell plate, such as Figure 6 As shown), each arc-shaped branch groove 4 has an inner wall provided with an arc-shaped slot 5 adapted to the arc-shaped insert block 203, and the arc-shaped insert block 203 is inserted into the arc-shaped slot 5 for fixing the ring 201 and the dumbbell handle 1;

[0027] Two clamping assemblies 6 are provided on each of the two collars 201. Two circular grooves 7 are provided on the inner wall surfaces of the two collars 201. The two clamping assemblies 6 include spring latches 601. The two spring latches 601 are respectively fixed in the two circular grooves 7. The outer wall surfaces on both sides of the dumbbell handle 1 are provided with multiple clamping grooves 602 that are compatible with the spring latches 601. The spring latches 601 are clamped with the clamping grooves 602. With the help of the spring latches 601, the connection between the collar 201 and the dumbbell handle 1 can be further strengthened.

[0028] The multiple slots 602 on both sides of the dumbbell handle rod 1 are divided into two groups, and the slots 602 in each group are distributed in a linear array, so as to be suitable for fixing different numbers of dumbbell plates. The arcuate branch grooves 4 on each arcuate slide groove 3 are distributed in a linear array, which is convenient for fixing different numbers of dumbbell plates.

[0029] When in use, the user first places dumbbell plates on both ends of the dumbbell handle rod 1 so that the dumbbell plates fit together and contact the dumbbell handle rod 1, and then aligns the arc-shaped sliders 202 and the arc-shaped inserting blocks 203 on the two collars 201 with the arc-shaped sliding grooves 3 for insertion. When the collars 201 abut against the dumbbell plates, the user rotates the collars 201 to drive the arc-shaped sliders 202 to be inserted into the multiple branch grooves respectively, and at the same time, the arc-shaped inserting blocks 203 on the arc-shaped sliders 202 are inserted into the arc-shaped slots 5 on the inner walls of the branch grooves, so that the collars 201 and the dumbbell handle rod 1 are firmly connected together, and the collars 201 are used to firmly fasten the multiple dumbbell plates to prevent the dumbbell plates from slipping off the dumbbell handle rod 1.

[0030] At the same time, the spring pin 601 can be engaged with the slot 602 on the dumbbell handle rod 1 to further improve the connection firmness between the ring 201 and the dumbbell handle rod 1. When the dumbbell plates need to be removed, the user only needs to pull the spring pin 601 to separate the slot 602, and then reverse the ring 201 to take out the ring 201 and the dumbbell plates. The structure is simple and the operation is more time-saving and labor-saving.

[0031] Refer to the instruction manual Figure 1-6 , two receiving grooves 8 are provided on the outer wall surface of the two collars 201, and the spring latch 601 extends into the receiving groove 8 away from the end of the dumbbell handle rod 1, which is convenient for the user to pull the spring latch 601 to move. The outer wall of the two spring latches 601 away from the end of the dumbbell handle rod 1 is provided with an embedding groove 9, and each receiving groove 8 is threadedly connected with a threaded rod 10 adapted to the embedding groove 9. The spring latch 601 is fixed by the threaded rod 10, and there is no need to hold the spring latch 601 by hand all the time, which is more labor-saving to use;

[0032] The outer wall surfaces of the two collars 201 are processed with a plurality of ridges 11 for increasing the friction of the outer wall of the collars 201 so that the user can rotate the collars 201 better.

[0033] By providing a threaded rod 10 in each storage slot 8, when the user needs to separate the spring latch 601 from the slot 602, the threaded rod 10 can be twisted and inserted into the slot 9 of the spring latch 601, thereby preventing the spring latch 601 from being automatically inserted into the slot 602. The user does not need to hold the spring latch 601 by hand all the time, which is more labor-saving to use.

[0034] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An end face fastening device for a combined dumbbell, comprising a dumbbell handle (1), characterized in that: The dumbbell handle (1) is provided with two fastening assemblies (2), each fastening assembly (2) comprises a collar (201), the two collars (201) are respectively provided on both sides of the dumbbell handle (1), the inner walls of the two collars (201) are fixed with a plurality of arc-shaped sliders (202), and each arc-shaped insert (203) is fixed on the inner walls of the two collars (201); The outer walls of both sides of the dumbbell handle (1) are provided with a plurality of arc-shaped sliding grooves (3), each arc-shaped sliding groove (3) is provided with a plurality of arc-shaped branch grooves (4), and the inner wall of each arc-shaped branch groove (4) is provided with an arc-shaped slot (5) adapted to the arc-shaped insert block (203), and the arc-shaped insert block (203) is inserted into the arc-shaped slot (5) for fixing the ring (201) and the dumbbell handle (1); Two clamping assemblies (6) are provided on each of the two collars (201) for improving the connection firmness between the collars (201) and the dumbbell handle (1).

2. The end face fastening device of a combined dumbbell according to claim 1, characterized in that: The inner wall surfaces of the two collars (201) are each provided with two circular grooves (7), and the two clamping assemblies (6) each include a spring latch (601), and the two spring latches (601) are respectively fixed in the two circular grooves (7). The outer wall surfaces on both sides of the dumbbell handle (1) are provided with a plurality of clamping grooves (602) adapted to the spring latches (601), and the spring latches (601) are clamped with the clamping grooves (602).

3. The end face fastening device of a combined dumbbell according to claim 2, characterized in that: The multiple slots (602) on both sides of the dumbbell handle (1) are divided into two groups, and the slots (602) in each group are distributed in a linear array.

4. The end face fastening device of a combined dumbbell according to claim 1, characterized in that: The arc-shaped branch grooves (4) on each arc-shaped slide groove (3) are distributed in a linear array.

5. The end face fastening device of a combined dumbbell according to claim 2, characterized in that: Two receiving grooves (8) are provided on the outer wall surfaces of the two collars (201), and the spring latch (601) extends into the receiving groove (8) away from one end of the dumbbell handle (1), so as to facilitate the movement of the spring latch (601).

6. The end face fastening device of a combined dumbbell according to claim 5, characterized in that: The outer wall of one end of the two spring latches (601) away from the dumbbell handle (1) is provided with an embedding groove (9), and each receiving groove (8) is threadedly connected with a threaded rod (10) adapted to the embedding groove (9) to facilitate fixing the spring latches (601).

7. The end face fastening device of a combined dumbbell according to claim 1, characterized in that: The outer wall surfaces of the two collars (201) are both processed with a plurality of convex strips (11) for increasing the friction force of the outer walls of the collars (201).

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