Dumbbell handle lock

Abstract

The utility model discloses a dumbbell handle lock, including a weight seat and a connecting rod, a lock piece is sleeved on the connecting rod, a limit block is arranged on the inner wall of the lock piece, a slide groove / hole and a limit groove / hole matched with the limit block are arranged on the weight seat, the slide groove / hole is communicated with the limit groove / hole, when installing, the limit block on the connecting rod slides along the slide groove / hole to the bottom of the slide groove / hole, and the connecting rod is rotated to make the limit block slide into the limit groove / hole to limit the weight seat. Compared with the prior art, the utility model has the advantage that the weight seat only needs to be slightly rotated when installing and disassembling, and the installation and disassembly process is simple and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of dumbbells, in particular to a dumbbell handle lock. Background Art

[0002] A dumbbell is a piece of fitness equipment used for hand muscle and strength training, usually including a dumbbell bar and weights symmetrically arranged at both ends of the dumbbell bar. The dumbbell is generally made of cast iron. Traditional dumbbells generally have a dumbbell bar and weights as an integrated structure, and their weights cannot be adjusted. In order to meet fitness needs, dumbbells of different weights need to be purchased, which is costly and takes up a lot of space. Therefore, some dumbbells with removable and replaceable weights have appeared on the market.

[0003] For example, the Chinese utility model patent "An adjustable dumbbell" with patent publication number CN220513341U includes a first dumbbell head, a second dumbbell head, a weight plate and a connecting rod. The first dumbbell head is threadedly fixed to one end of the connecting rod, and the second dumbbell head is threadedly fixed to the other end of the connecting rod. A plurality of weight plates are slidably connected to the first dumbbell head and the second dumbbell head in sequence, and the connecting rod includes a rod body.

[0004] In the above scheme, the connecting rod is threadedly connected to the first dumbbell joint and the second dumbbell joint respectively through threads. During installation, the connecting rod needs to be screwed multiple times relative to the first dumbbell head and the second dumbbell head to fix and remove it, which makes installation and removal not easy. Utility Model Content

[0005] The utility model aims at solving the problem that a connecting rod of a dumbbell is respectively connected to a first dumbbell joint and a second dumbbell joint, and the connecting rod needs to be screwed multiple times relative to the first dumbbell head and the second dumbbell head for fixing and disassembling during installation. The utility model provides a dumbbell handle lock to solve the above problem.

[0006] The technical solution adopted by the utility model to solve the above-mentioned technical problems is as follows: it includes a counterweight seat and a connecting rod, the connecting rod is sleeved with a locking piece, the inner wall of the locking piece is provided with a limit block, the counterweight seat is provided with a slide groove / hole and a limit groove / hole that cooperate with the limit block, the slide groove / hole is connected with the limit groove / hole, and during installation, the limit block on the connecting rod slides along the slide groove / hole to the bottom of the slide groove / hole, and the connecting rod is rotated to make the limit block slide into the limit groove / hole to limit the counterweight seat.

[0007] A further preferred solution of the utility model is that the limiting block is provided with a slot, and the limiting slot / hole is provided with an elastic convex strip which extends into the slot and cooperates with the slot when limiting the counterweight seat.

[0008] A further preferred solution of the utility model is that the outer edge of the slot has a smoothly transitioned curved surface, and the connection between the two side surfaces and the top surface of the convex strip also has a smoothly transitioned curved surface.

[0009] A further preferred solution of the utility model is: the counterweight seat includes a left counterweight seat and a right counterweight seat hinged to the left counterweight seat, plug-ins are provided inside the left counterweight seat and the right counterweight seat, and the connecting rod is provided with a socket for inserting the two plug-ins when the counterweight seat is sleeved on the connecting rod.

[0010] A further preferred solution of the utility model is: the connecting rod includes a handle rod and a connecting sleeve fixed on the handle rod, the connecting sleeve has an insertion end, the insertion end has a limiting step, and the left counterweight seat and the right counterweight seat are provided with limiting grooves that cooperate with the limiting step to limit the counterweight seat.

[0011] A further preferred solution of the utility model is that the outer wall of the insertion end is a non-circular special-shaped structure, the connecting end of the counterweight seat has a connecting channel, and the inner wall of the connecting channel is also a non-circular special-shaped structure and matches the outer wall of the insertion end.

[0012] A further preferred solution of the utility model is that the locking piece is sleeved on the connecting sleeve, and the inner wall of one end of the locking piece away from the counterweight seat has an annular clamping ring, and the inner diameter of the clamping ring is equal to the outer diameter of the side of the ring away from the counterweight seat.

[0013] A further preferred solution of the utility model is: the limit blocks have two groups and are respectively arranged on both sides of the inner wall of the locking piece, the slide grooves / holes and the limit grooves / holes also have two groups and are respectively arranged on the outer wall of the connection side of the counterweight seat, and each group of limit blocks corresponds one-to-one to each group of slide grooves / holes and limit grooves / holes.

[0014] A further preferred solution of the utility model is that the two limit blocks are centrally symmetrical, and the two slide grooves / holes and the limit groove / hole are centrally symmetrical.

[0015] A further preferred scheme of the utility model is: the left counterweight seat is provided with a left insert block and a left slot, the right counterweight seat is provided with a right slot and a right insert block corresponding to the left insert block and the left slot respectively, and the left counterweight seat and the right counterweight seat are plugged into each other through the left insert block and the right slot, and the left slot and the right insert block.

[0016] Compared with the prior art, the utility model has the following advantages: through the cooperation between the limit block on the inner wall of the locking piece and the slide groove / hole on the counterweight seat and the limit groove / hole, installation only requires sliding the limit block along the slide groove / hole to the bottom of the slide groove / hole, and then rotating the lock to make the limit block slide into the limit groove / hole to complete the installation; when disassembling, only the locking piece needs to be rotated in the opposite direction and then slide out along the slide groove / hole to achieve disassembly. Compared with the prior art, the counterweight seat only needs to be slightly rotated during installation and disassembly, and the installation and disassembly process is simple and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and should not be regarded as limiting the scope of the present invention. Furthermore, unless otherwise specified, the drawings only conceptually represent the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model according to the preferred embodiment of the utility model;

[0019] Figure 2 This is an exploded view of the counterweight seat and the connecting rod of the preferred embodiment of the utility model;

[0020] Figure 3 This is the preferred embodiment of the utility model Figure 2 A partial enlarged view of the middle A;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the connecting sleeve of the preferred embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of a locking member according to a preferred embodiment of the utility model;

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the right seat body of the preferred embodiment of the utility model;

[0024] Figure 7 This is one of the exploded views of the preferred embodiment of the utility model;

[0025] Figure 8 This is the second exploded view of the preferred embodiment of the utility model.

[0026] In the figure: 1. counterweight seat; 11. left counterweight seat; 111. left insert block; 112. left slot; 12. right counterweight seat; 121. right insert block; 122. right slot; 13. plug-in unit; 14. limit slot / hole; 15. slide slot / hole; 16. convex strip; 17. limit card slot; 18. connecting channel; 2. connecting rod; 21. handle rod; 22. connecting sleeve; 221. insert hole; 222. limit step; 23. insertion end; 3. locking member; 31. limit block; 32. card slot; 33. annular retaining ring; 4. bolt. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only descriptive and exemplary and should not be construed as limiting the protection scope of the present invention.

[0028] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0029] This embodiment mainly describes the dumbbell handle lock, which is as follows:

[0030] like Figures 1 to 8 As shown, the dumbbell handle lock comprises a weight seat 1 and a connecting rod 2, wherein the weight seat 1 is arranged on both sides of the connecting rod 2 (only one side is shown in the figure), and a lock piece 3 for connecting and fixing with the connecting rod 2 is sleeved on the connecting rod 2, and a limit block 31 is arranged on the inner wall of the lock piece 3, and a slide groove / hole 15 and a limit groove / hole 14 cooperating with the limit block 31 are arranged on the weight seat 1, and the slide groove / hole 15 is connected with the limit groove / hole 14. When installing, the limit block 31 on the connecting rod 2 slides along the slide groove / hole 15 to the bottom of the slide groove / hole 15, and the connecting rod 2 is rotated to make the limit block 3 1 slides into the limiting groove / hole 14 to limit and lock the counterweight seat 1. Through the cooperation between the limiting block 31 on the inner wall of the locking member 3 and the sliding groove / hole 15 on the counterweight seat 1 and the limiting groove / hole 14, the installation only needs to slide the limiting block 31 along the sliding groove / hole 15 to the bottom of the sliding groove / hole 15. At this time, the locking member 3 is rotated to make the limiting block 31 slide into the limiting groove / hole 14 to complete the installation. When disassembling, it only needs to rotate the locking member 3 in the opposite direction and then slide out along the sliding groove / hole 15 to achieve disassembly. The disassembly process is simple and quick, and the counterweight seat 1 of different weights can be replaced according to different needs.

[0031] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the limit block 31 has a slot 32, and the limit slot / hole 14 is provided with an elastic convex strip 16 that extends into the slot 32 and cooperates with the slot 32 when limiting the counterweight seat 1. The setting of the elastic convex strip 16 further enhances the limiting effect of the limit block 31 and the limit slot / hole 14. In order to prevent interference during installation and limiting, the outer edge of the slot 32 has a smoothly transitioned curved surface, and the connection between the two side surfaces and the top surface of the convex strip 16 also has a smoothly transitioned curved surface. The mutual cooperation of the two curved edges can reduce friction and interference.

[0032] like Figure 7 and Figure 8As shown, the counterweight seat 1 includes a left counterweight seat 11 and a right counterweight seat 12, and the left counterweight seat 11 and the right counterweight seat 12 are hingedly connected to the right counterweight seat 12 by a hinge. The left counterweight seat 11 and the right counterweight seat 12 are both provided with plug-ins 13 inside, and the connecting rod 2 is provided with a socket 221 into which the two plug-ins 13 are inserted when the counterweight seat is sleeved on the connecting rod 2. During installation, the left counterweight seat 11 and the right counterweight seat 12 are rotated until the plug-in 13 corresponds to the socket 221, and then the plug-in 13 is inserted into the socket 221 and connected with the connecting rod 2, so that the counterweight seat 1 is restricted in the lateral direction of the connecting rod 2 to prevent it from slipping out during use.

[0033] Specifically, the connecting rod 2 includes a handle bar 21 and a connecting sleeve 22 fixedly sleeved on the handle bar 21. The handle bar 21 and the connecting sleeve 22 may be an integral structure, or may be provided with corresponding threaded holes on both sides of the handle bar 21 and the connecting sleeve 22, and fixedly connected by through-hole bolts 4. The connecting sleeve 22 has an insertion end 23, and the handle bar 21 and the connecting sleeve 22 have corresponding insertion holes 221. The insertion end 23 and the insertion end 23 have a limiting step 222. The insertion hole 221 and the limiting step 222 are both provided at the insertion end. 23, the left counterweight seat 11 and the right counterweight seat 12 are provided with a limiting slot 17 that cooperates with the limiting step 222 to limit the counterweight seat 1. During installation, the left counterweight seat 11 and the right counterweight seat 12 are rotated until the plug-in 13 corresponds to the socket 221 on the handle bar 21 and the connecting sleeve 22 and extends into the socket 221. At this time, the limiting step 222 extends into the limiting slot 17 and is then fixed by the locking member 3. The limiting step 222 and the limiting slot 17 are at least one set. The setting of the limiting step 222 and the limiting slot 17 can further enhance the stability of the handle bar 21. Figure 5 As shown, the locking member 3 is sleeved on the connecting sleeve 22, and the inner wall of the end of the locking member 3 away from the counterweight seat 1 has an annular retaining ring 33, and the inner diameter of the retaining ring is equal to the outer diameter of the side of the ring away from the counterweight seat 1. After installation, the inner diameter of the annular retaining ring 33 is close to the outer diameter of the connecting sleeve 22.

[0034] Specifically, the outer wall of the insertion end 23 of the connecting sleeve 22 is a non-circular special-shaped structure, and the connecting end of the counterweight seat 1 has a connecting channel 18. The inner wall of the connecting channel 18 is also a non-circular special-shaped structure and matches the outer wall of the insertion end 23. This can avoid the counterweight seat 1 and the connecting sleeve 22 from rotating during use, thereby improving the user experience.

[0035] Specifically, the limit blocks 31 have two groups and the two limit blocks 31 are centrally symmetrically arranged on both sides of the inner wall of the locking member 3, and the slide grooves / holes 15 and the limit grooves / holes 14 also have two groups and the two slide grooves / holes 15 and the limit grooves / holes 14 are centrally symmetrically arranged on the outer wall of the connection side of the counterweight seat 1, each group of limit blocks 31 corresponds one by one to each group of slide grooves / holes 15 and limit grooves / holes 14, so that the left and right sides of the counterweight seat 1 are evenly stressed, the structure is more stable, and the problem of uneven stress on the left and right sides and shortened service life is avoided.

[0036] like Figure 7 and Figure 8 As shown, the left counterweight seat 11 is provided with a left insert block 111 and a left slot 112, and the right counterweight seat 12 is provided with a right slot 122 and a right insert block 121 corresponding to the left insert block 111 and the left slot 112 respectively. The left counterweight seat 11 and the right counterweight seat 12 are plugged into each other through the left insert block 111 and the right slot 122, and the left slot 112 and the right insert block 121. After plugging, the left counterweight seat 11 and the right counterweight seat 12 are a fixed integrated structure to improve stability.

[0037] During installation, the left counterweight seat 11 and the right counterweight seat 12 are rotated until the plug-in 13 corresponds to the socket 221 on the handle rod 21 and the connecting sleeve 22, and the plug-in 13 extends into the socket 221. At this time, the limiting step 222 extends into the limiting slot 17, squeezing the left counterweight seat 11 and the right counterweight seat 12 so that the left counterweight seat 11 and the right counterweight seat 12 are plugged into each other, and finally the locking member 3 is pushed to slide, so that the limiting block 31 slides along the slide groove / hole 15 to the bottom of the slide groove / hole 15. At this time, the locking member 3 is rotated to make the limiting block 31 slide into the limiting slot / hole 14 to complete the installation.

[0038] When disassembling, you only need to rotate the locking piece 3 in the opposite direction to make the limit slide out along the slide groove / hole 15, open the left counterweight seat 11 and the right counterweight seat 12 to both sides, then the limit step 222 will be separated from the limit groove / hole 14, and the plug-in 13 will be separated from the socket 221 to achieve disassembly. The disassembly process is simple and quick, and the counterweight seat 1 can be replaced according to different needs.

[0039] In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0040] The dumbbell handle lock provided by the utility model is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the utility model and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified. These improvements and modifications also fall within the protection scope of the claims of the utility model.

Claims

1. A dumbbell handle lock, including a weight seat and a connecting rod, characterized in that: A locking piece is sleeved on the connecting rod, a limit block is provided on the inner wall of the locking piece, a sliding groove / hole and a limit groove / hole cooperating with the limit block are provided on the counterweight seat, the sliding groove / hole is connected with the limit groove / hole, and during installation, the limit block on the connecting rod slides along the sliding groove / hole to the bottom of the sliding groove / hole, and the connecting rod is rotated to make the limit block slide into the limit groove / hole to limit the counterweight seat.

2. The dumbbell handle lock according to claim 1, characterized in that: The limiting block is provided with a slot, and the limiting slot / hole is provided with an elastic convex strip which extends into the slot and cooperates with the slot when limiting the counterweight seat.

3. The dumbbell handle lock according to claim 2, characterized in that: The outer edge of the slot has a smoothly transitioned curved surface, and the connection between the two side surfaces and the top surface of the convex strip also has a smoothly transitioned curved surface.

4. The dumbbell handle lock according to claim 1, characterized in that: The counterweight seat comprises a left counterweight seat and a right counterweight seat hinged to the left counterweight seat, plug-ins are arranged inside the left counterweight seat and the right counterweight seat, and a socket is arranged on the connecting rod for inserting the two plug-ins when the counterweight seat is sleeved on the connecting rod.

5. The dumbbell handle lock according to claim 4, characterized in that: The connecting rod includes a handle rod and a connecting sleeve fixed on the handle rod, the connecting sleeve has an insertion end, and the insertion end has a limiting step. The left counterweight seat and the right counterweight seat are provided with limiting grooves that cooperate with the limiting step to limit the counterweight seat.

6. The dumbbell handle lock according to claim 5, characterized in that: The outer wall of the insertion end is a non-circular special-shaped structure, and a connecting channel is provided in the connecting end of the counterweight seat. The inner wall of the connecting channel is also a non-circular special-shaped structure and matches the outer wall of the insertion end.

7. The dumbbell handle lock according to claim 5, characterized in that: The locking piece is sleeved on the connecting sleeve, and the inner wall of one end of the locking piece away from the counterweight seat is provided with an annular clamping ring, and the inner diameter of the clamping ring is equal to the outer diameter of the side of the ring away from the counterweight seat.

8. The dumbbell handle lock according to claim 1, characterized in that: The limit blocks have two groups and are respectively arranged on both sides of the inner wall of the locking piece. The sliding grooves / holes and the limit grooves / holes also have two groups and are respectively arranged on the outer wall of the connection side of the counterweight seat. Each group of limit blocks corresponds one-to-one to each group of sliding grooves / holes and limit grooves / holes.

9. The dumbbell handle lock according to claim 8, characterized in that: The two limit blocks are centrally symmetrical, and the sliding groove / hole and the limit groove / hole are centrally symmetrical.

10. The dumbbell handle lock according to claim 4, characterized in that: The left counterweight seat is provided with a left plug block and a left slot, and the right counterweight seat is provided with a right slot and a right plug block corresponding to the left plug block and the left slot respectively. The left counterweight seat and the right counterweight seat are plugged into each other through the left plug block and the right slot, and the left slot and the right plug block.

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