Dumbbell with quick release structure

Abstract

A dumbbell with a quick-release structure includes: a handle (10) comprising a tube (11); two latching modules (20) respectively attached to both ends of the tube (11), each including a latching element (21) drivable to be moved between the ends of the tube (11) to a latching position and a releasing position; multiple counterweights (30) arranged side-by-side at both ends of the handle (10), each having a through-hole (31); and two locking mechanisms. The two locking components (40) each include a screw (41) and a head (42). The screw (41) can pass through the connecting holes (31) of the corresponding multiple counterweights (30) and be inserted into both ends of the tube body (11), and the head (42) can abut against the outer side of the outermost counterweight (30). When the locking component (21) is in the locking position, the screw (41) and the locking component (21) are screwed together. When the locking component (21) is in the releasing position, the locking component (21) releases the screw (41).

Description

Technical Field

[0001] This invention relates to the technical field of adjustable weight dumbbell structure, and more particularly to a quick-release dumbbell with a quick-release structure that allows for easy weight adjustment by rapidly changing the weight plates. Background Technology

[0002] An existing adjustable-weight dumbbell structure, as shown in Taiwan Patent No. M627768 "Adjustable-weight Dumbbell," primarily utilizes two retaining pins that pass through multiple weight plates and are then screwed onto both ends of a handle. This secures the weight plates together at both ends of the handle to form a dumbbell for use. The two retaining pins can then be unscrewed from both ends of the handle to facilitate the removal or replacement of weight plates of different weights. Finally, tightening the screws on the two retaining pins allows for adjustment of the dumbbell's weight.

[0003] Therefore, when adjusting the weight of the existing adjustable dumbbell structure, the two retaining shafts need to be rotated multiple times to release the weight plates so that they can be removed or replaced. Moreover, after installing the corresponding weight plates, the two retaining shafts need to be rotated in the opposite direction multiple times to tighten and restrict the weight plates so that they can be combined and fixed to both ends of the handle. Therefore, a lot of time is spent rotating the two retaining shafts during adjustment, resulting in the disadvantage of being time-consuming and laborious.

[0004] In view of this, the inventors have deeply conceived and actively researched, improved and tested the aforementioned problems to develop and design this invention. Summary of the Invention

[0005] The main objective of this invention is to solve the problems of existing adjustable dumbbells, which require rotating the two locking pins multiple times to release or tighten the weight plates when adjusting the weight, resulting in time-consuming and laborious weight adjustment.

[0006] This invention provides a dumbbell with a quick-release structure, including a handle, two snap-fit ​​modules, multiple weight plates, and two locking members. The handle comprises a tube. The two snap-fit ​​modules are respectively attached to both ends of the tube, and each includes a snap-fit ​​member that can be driven to move between the two ends of the tube to a snap-fit ​​position and a release position. The multiple weight plates are arranged side-by-side at both ends of the handle, and each weight plate has a through-hole. Each of the two locking members includes a screw and a head. The screw of each locking member passes through the corresponding through-hole of the multiple weight plates and is inserted into both ends of the tube, and the head can abut against the outer surface of the outermost weight plate. When the snap-fit ​​members of the two snap-fit ​​modules are in the snap-fit ​​position, the two screws are screwed into the two snap-fit ​​members. When the two snap-fit ​​members are in the release position, the two snap-fit ​​members release the two screws.

[0007] As a further improvement of the present invention

[0008] The handle comprises two housings and two housing covers. The tube is hollow and extends to both ends. A fixing seat is provided at each end. Each fixing seat has a fixing groove that connects to the inside of the tube. The two housings cover the two fixing seats and each fixing groove has an opening. The two housing covers are attached to the outside of the two housings and each end of the tube has a through hole for the screws of the two locking components to pass through.

[0009] The two latching modules are respectively attached to the two fixed seats. Each latching module includes a driving member and a restoring elastic body. The latching member is oscillatingly attached to the corresponding fixed seat, so that it can swing to the latching position and the release position in the corresponding fixed groove. The bottom of the latching member is provided with multiple latching protrusions. In the latching position, the multiple latching protrusions are located in the tube body. In the release position, the multiple latching protrusions move upward to an appropriate position. The driving member is oscillatingly attached to the corresponding fixed seat and exposed in the corresponding groove, so that it can be externally moved to swing in the corresponding fixed groove to push the latching member to swing from the latching position to the release position. One end of the restoring elastic body abuts against the latching member and the other end abuts against the corresponding fixed seat, which can generate an elastic force to make the latching member swing from the release position to the latching position when it is not pushed by the driving member.

[0010] When the two latching members are in the latching position, the external threads of the screws of the two latching members are screwed into the plurality of latching protrusions. When the two latching members are in the release position, the plurality of latching protrusions disengage from the external threads of the two screws.

[0011] As a further improvement of the present invention, the grip includes two abutment plates, which are attached to the outer sides of the two shell covers, and each of the two through holes is provided with a through hole for the screws of the two locking members to pass through. Each of the two abutment plates has a positioning groove on its outer side. Each of the two opposite sides of the plurality of counterweights has a corresponding positioning block and a positioning groove. The positioning block can be embedded in the positioning groove of the corresponding abutment plate or in the positioning groove of another counterweight. The positioning groove can be embedded in the positioning block of another counterweight.

[0012] As a further improvement of the present invention, the two abutment plates are hexagonal, the two positioning grooves are hexagonal corresponding to the two abutment plates, the multiple counterweights are hexagonal corresponding to the two abutment plates, the positioning block is hexagonal corresponding to the positioning groove, and the positioning slot is hexagonal corresponding to the positioning block.

[0013] As a further improvement of the present invention, each of the fixing slots has two positioning holes on one side of the slot wall, each of the snap-fit ​​modules includes an elastic positioning group, and each of the driving members has a transverse receiving hole. The elastic positioning group includes a sealing bolt, a steel ball, and a positioning elastic body. The sealing bolt is screwed into one end of the receiving hole, the steel ball is movably disposed at the other end of the receiving hole, and the positioning elastic body is disposed in the receiving hole, with its two ends abutting against the sealing bolt and the steel ball respectively, so as to generate an elastic force to push the steel ball outward. When the driving member pushes the snap-fit ​​member to swing to the release position, the steel ball is elastically embedded in one of the positioning holes to position the driving member in that position. When the driving member swings to allow the snap-fit ​​member to swing to the snap-fit ​​position, the steel ball is elastically embedded in the other positioning hole to position the driving member in that position.

[0014] As a further improvement of the present invention, the two covers are screwed onto the two housings using a plurality of connecting bolts.

[0015] As a further improvement of the present invention, the two abutment plates are screwed to the outside of the two shell covers using a plurality of connecting bolts.

[0016] As a further improvement of the present invention, the two fasteners are respectively connected to the two fixed seats by a first bolt and a first nut, and the driving member is respectively connected to the two fixed seats by a second bolt and a second nut.

[0017] As a further improvement of the present invention, the plurality of counterweights can be set to various different weights.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] The dumbbell with a quick-release structure provided by the present invention can form a quick-release structure through the two buckle modules at both ends of the handle and the two locking members, so that the two locking members can be quickly pulled out or inserted into both ends of the handle. In particular, after the two locking members are inserted into both ends of the handle, they only need to be rotated less than one turn to achieve the effect of fine adjustment and locking. Therefore, the multiple counterweight plates can be quickly replaced to achieve the purpose of quick and convenient weight adjustment. Attached Figure Description

[0020] Figure 1 This is a partial three-dimensional exploded view of the present invention.

[0021] Figure 2 This is a partial three-dimensional exploded and enlarged schematic diagram of the grip of the present invention.

[0022] Figure 3 This is an enlarged three-dimensional combined schematic diagram of the present invention.

[0023] Figure 4 This is a combined cross-section and a partially enlarged schematic diagram of the present invention.

[0024] Figure 5 This is a schematic diagram illustrating the action of the latch module releasing the locking element according to the present invention.

[0025] Figure 6 This is a schematic diagram of the action after the locking element of the present invention is pulled out.

[0026] Figure 7 This is another embodiment of the present invention.

[0027] Figure 8 This is a partial exploded perspective view of another embodiment of the present invention.

[0028] Figure 9 This is a partial three-dimensional exploded and enlarged schematic diagram of the grip according to another embodiment of the present invention.

[0029] Figure 10 This is a three-dimensional enlarged schematic diagram of another embodiment of the present invention.

[0030] Symbol explanation:

[0031] 10 grips, 11 tubes

[0032] 110 Fixing base 111 Fixing slot

[0033] 112 positioning holes, 12 housing

[0034] 120 slot 13 shell cover

[0035] 130 through hole 14 abutment plate

[0036] 140 perforation, 141 positioning groove

[0037] 142 connecting bolts

[0038] 20 Snap-on Modules 21 Snap-on Components

[0039] 210 First bolt 211 First nut

[0040] 212 Snap-on Protrusion 22 Drive Unit

[0041] 220 Second Shaft Bolt 221 Second Nut

[0042] 222 Receiving hole 23 Resilience elastomer

[0043] 24 flexible positioning groups, 240 sealing bolts

[0044] 241 Steel ball 242 Positioning elastomer

[0045] 30 counterweight plate, 31 connecting hole

[0046] 32 Positioning Block 33 Positioning Slot

[0047] 40 Locking fastener 41 Screw

[0048] 42 heads

[0049] 50 counterweights Detailed Implementation

[0050] Please see Figures 1 to 5 As shown, the dumbbell with quick-release structure according to the present invention includes a handle 10, two buckle modules 20, multiple counterweight plates 30, and two locking fasteners 40, wherein:

[0051] The grip 10 comprises a tube 11, two housings 12, two housing covers 13, and two abutment plates 14. The tube 11 is hollow and extends to both ends, with a fixing seat 110 at each end. Each fixing seat 110 has a fixing groove 111 communicating with the interior of the tube 11, and two positioning holes 112 are provided on one side wall of each fixing groove 111. The two housings 12 cover the two fixing seats 110, and each has a slot 120 corresponding to the two fixing grooves 111. The two housing covers 13 on the outside of the two housings 12, and each has a through hole 130 corresponding to both ends of the tube 11. The two abutment plates 14 are attached to the outside of the two housing covers 13, and each has a through hole 140 corresponding to the two through holes 130. Each abutment plate 14 has a positioning groove 141 on its outer side. In this embodiment, multiple connecting bolts 142 are used to pass through the corresponding abutment plates 14 and the shell cover 13 and screw them onto the shell 12, so as to achieve the purpose of connecting the two abutment plates 14 to the outside of the two shell covers 13.

[0052] The two latching modules 20 are respectively attached to the two fixed seats 110. Each latching module 20 includes a latching member 21, a driving member 22, a restoring elastic body 23, and an elastic positioning group 24. The latching member 21 is pivotally attached to the corresponding fixed seat 110 by a first bolt 210 and a first nut 211, so that it can swing to a latching position and a release position in the corresponding fixing groove 111. The bottom of the latching member 21 is provided with multiple latching protrusions 212. In the latching position, the multiple latching protrusions 212 are located in the tube body 11. In the release position, the multiple latching protrusions 212 move upward to an appropriate position. The drive member 22 is pivotally connected to the corresponding fixed base 110 by a second bolt 220 and a second nut 221, and is exposed in the corresponding slot 120, so that it can be externally moved to swing in the corresponding fixed slot 111 to push the latching member 21 from the latching position to the release position. The drive member 22 has a transverse receiving hole 222. One end of the restoring elastic body 23 abuts against the latching member 21, and the other end abuts against the corresponding fixed base 110, which can generate an elastic force so that the latching member 21 swings from the release position to the latching position when it is not pushed by the drive member 22. The elastic positioning assembly 24 is disposed in the receiving hole 222 and includes a sealing bolt 240, a steel ball 241, and a positioning elastic body 242. The sealing bolt 240 is screwed into one end of the receiving hole 222, and the steel ball 241 is movably disposed at the other end of the receiving hole 222. The positioning elastic body 242 is disposed in the receiving hole 222, and its two ends abut against the sealing bolt 240 and the steel ball 241 respectively, so as to generate an elastic force to push the steel ball 241 outward. When the driving member 22 pushes the latching member 21 to swing to the release position, the steel ball 241 is elastically embedded in one of the positioning holes 112 to position the driving member 22 in that position. When the driving member 22 swings to allow the latching member 21 to swing to the latching position, the steel ball 241 is elastically embedded in the other positioning hole 112 to position the driving member 22 in that position.

[0053] The plurality of counterweights 30 can be configured with various weights and can be arranged side by side on the outer sides of the two abutment plates 14. Each counterweight 30 has a through-hole 31 and two opposite sides respectively have a corresponding positioning block 32 and a positioning groove 33. The positioning block 32 can be embedded in the positioning groove 141 of the corresponding abutment plate 14 or in the positioning groove 33 of another counterweight 30. The positioning groove 33 can be used for the positioning block 32 of another counterweight 30. In this embodiment, the two abutment plates 14 are hexagonal, the two positioning grooves 141 are quadrilateral, the shape of the plurality of counterweights 30 is hexagonal corresponding to the two abutment plates 14, the positioning block 32 is quadrilateral corresponding to the positioning groove 141, and the positioning groove 33 is quadrilateral corresponding to the positioning block 32.

[0054] The two locking members 40 can respectively connect and fix the multiple counterweights 30 to the outer sides of the two abutment plates 14. Each locking member 40 includes a screw 41 and a head 42. The screw 41 can pass through the connecting holes 31 of the counterweights 30, the through holes 140 of the abutment plates 14 on the corresponding side, and the through holes 130 of the shell cover 13 on the corresponding side and be inserted into one end of the tube body 11, so that the head 42 can abut against the outer surface of the outermost counterweight 30. When the latching member 21 is in the latching position, the external thread of the screw 41 can be screwed with the latching protrusion 212 of the latching member 21. When the latching member 21 is in the released position, the latching protrusion 212 of the latching member 21 disengages from the external thread of the screw 41.

[0055] Please refer to the following: Figures 4 to 6 As shown, when the drive member 22 is pulled upward, one end will push the lower latching member 21 to swing from the latching position to the release position. At this time, the multiple latching protrusions 212 of the latching member 21 will disengage from the external thread of the screw 41 of the locking member 40. Thus, the locking member 40 can be quickly pulled out to release the multiple counterweights 30, thereby facilitating the removal or replacement of the multiple counterweights 30. Moreover, when the latching member 21 is in the release position, the screw 41 of the locking member 40 can also quickly pass through. After the replacement of the multiple counterweight plates 30 and insertion into one end of the tube body 11, the drive member 22 can be pulled down again, so that the elastic force of the restoring elastic body 23 will spring the buckle 21 from the release position back to the buckling position, thereby causing the multiple buckling protrusions 212 of the buckle 21 to engage in the external thread of the screw 41 of the locking member 40, forming a screwed connection. Then, the locking member 40 can be finely tightened to complete the weight adjustment of the dumbbell. Therefore, the weight adjustment is very quick and convenient.

[0056] The dumbbell with a quick-release structure provided by the present invention can form a quick-release structure through the two buckle modules 20 at both ends of the handle 10 and the two locking members 40, so that the two locking members 40 can be quickly pulled out or inserted into both ends of the handle 10. In particular, after the two locking members 40 are inserted into both ends of the handle 10, they only need to be rotated less than one turn to achieve the effect of fine adjustment and locking. Therefore, the multiple counterweights 30 can be quickly replaced to achieve the purpose of quick and convenient weight adjustment.

[0057] Please see Figure 7As shown, another embodiment of the dumbbell with the quick-release structure described above allows for the removal of the two abutment plates 14 of the handle 10, and the two shell covers 13 are directly screwed onto the two shells 12 using the multiple connecting bolts 142. Furthermore, the two locking fasteners 40 can also pass through the multiple weight plates 50 removed from an existing dumbbell to attach them to both ends of the handle 10, thus effectively utilizing the various shapes and sizes of the multiple weight plates 50 from existing dumbbells.

[0058] Please see Figures 8 to 10 The image shows another embodiment of the dumbbell with a quick-release structure described in this invention. Its structure is largely the same as the embodiment described above, except that the two abutment plates 14 in this embodiment are hexagonal, the two positioning grooves 141 are smaller hexagons corresponding to the two abutment plates 14, the plurality of counterweight plates 30 are hexagonal corresponding to the two abutment plates 14, and the positioning block 32 is hexagonal corresponding to the positioning groove 141 (please refer to the above embodiment for the structure and position of the positioning block 32). Figure 6 As shown, the only difference between the two is that one is quadrilateral and the other is hexagonal. The positioning groove 33 is hexagonal corresponding to the positioning block 32, thereby allowing the plurality of counterweight pieces 30 to be assembled in the corresponding aligned directions. Of course, in this invention, the two abutment plates 14, the two positioning grooves 141, the plurality of counterweight pieces 30, the positioning block 32 and the positioning groove 33 can be other corresponding polygons, which will not be described in detail here.

[0059] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A dumbbell with quick release structure, characterized in that, Comprising: a handle including a tube; two buckle modules respectively combined with two ends of the tube and each including a buckle member being driven to displace at the two ends of the tube to a buckle position and a release position; a plurality of weight plates respectively and side by side at the two ends of the handle, each of the plurality of weight plates having a combined hole therethrough, and each of the plurality of weight plates being provided with a different weight; two lock members each including a screw rod and a head, the screw rod of each of the two lock members being inserted through the combined hole of the corresponding weight plate at the two ends of the tube and allowing the head to abut against the outer side of the outermost weight plate; and wherein, when the buckle member of each of the two buckle modules is at the buckle position, the two screw rods and the two buckle members form a screw connection, and when the two buckle members are at the release position, the two buckle members release the two screw rods; each of the two ends of the tube is provided with a fixed seat, and the buckle member is swingably combined in the corresponding fixed seat; each of the two buckle modules further includes a driving member and a return spring; the driving member is swingably combined in the corresponding fixed seat to push the buckle member to swing from the buckle position to the release position, one end of the return spring abuts against the buckle member, and the other end abuts against the corresponding fixed seat to generate a spring force to allow the buckle member to swing from the release position to the buckle position when not pushed by the driving member.

2. The dumbbell with quick release structure according to claim 1, wherein: the handle includes two housings and two housing covers, the tube is hollow and penetrates to both ends, each of the two fixed seats is provided with a fixed groove communicating with the inside of the tube, the two housings cover the two fixed seats and are respectively provided with a slot corresponding to the two fixed grooves, and the two housing covers are combined and cover the outside of the two housings and are respectively provided with a through hole corresponding to the two ends of the tube to allow the screw rod of the two lock members to pass through; each of the two buckle modules is combined with the two fixed seats, and the buckle member can swing in the corresponding fixed groove to the buckle position and the release position, the bottom of the buckle member is provided with a plurality of buckle protrusions, the plurality of buckle protrusions are located in the tube when the buckle member is at the buckle position, and the plurality of buckle protrusions are moved upward to a proper position when the buckle member is at the release position, the driving member is exposed in the corresponding slot, and can be pulled from the outside to swing in the corresponding fixed groove to push the buckle member to swing from the buckle position to the release position; when the two buckle members are at the buckle position, the outer threads of the screw rods of the two lock members are screwed with the plurality of buckle protrusions, and when the two buckle members are at the release position, the plurality of buckle protrusions are separated from the outer threads of the two screw rods.

3. The dumbbell with quick release structure according to claim 2, wherein, The two abutting plates are combined with the outer sides of the two shell covers, and each has a through hole corresponding to the through hole of the two shell covers, and each has a positioning recess on the outer side of the abutting plate. The two opposite sides of the plurality of weight pieces each have a positioning block and a positioning slot corresponding to the positioning block. The positioning block can be embedded in the positioning recess of the corresponding abutting plate or the positioning slot of another weight piece, and the positioning slot can be embedded in the positioning block of another weight piece.

4. The dumbbell with quick release structure according to claim 3, wherein, The two abutting plates are hexagonal, the two positioning recesses are smaller hexagons corresponding to the two abutting plates, the plurality of weight pieces are hexagons corresponding to the two abutting plates, the positioning block is a hexagon corresponding to the positioning recess, and the positioning slot is a hexagon corresponding to the positioning block.

5. The dumbbell with quick release structure according to claim 2, wherein, Each side slot wall of the fixing slot is provided with two positioning holes. Each buckle module includes a resilient positioning group. Each driving member has a transverse receiving hole. The resilient positioning group includes a sealing bolt, a steel ball, and a positioning elastic body. The sealing bolt is screwed at one end of the receiving hole. The steel ball is movably arranged at the other end of the receiving hole. The positioning elastic body is arranged in the receiving hole, and the two ends are respectively abutted against the sealing bolt and the steel ball, so as to generate a spring force to push the steel ball outward. When the driving member pushes the buckle member to swing to the release position, the steel ball is elastically embedded in the positioning hole to position the driving member. When the driving member swings to allow the buckle member to swing to the buckle position, the steel ball is elastically embedded in the other positioning hole to position the driving member.

6. The dumbbell with quick release structure according to claim 2, wherein, The two shell covers are screwed on the two shell bodies by a plurality of combination bolts.

7. The dumbbell with quick release structure according to claim 3, wherein, The two abutting plates are combined with the outer sides of the two shell covers by a plurality of combination bolts.

8. The dumbbell with quick release structure according to claim 2, wherein, The two buckle members are combined in the two fixing seats by a first shaft bolt and a first nut respectively. The driving member is combined in the two fixing seats by a second shaft bolt and a second nut respectively. The two abutting plates are combined with the outer sides of the two shell covers by a plurality of combination bolts.

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