CN217661288U - Dumbbell - Google Patents

Abstract

The utility model relates to a dumbbell, which comprises a dumbbell body and a base, wherein the dumbbell body comprises a bearing part and bracket components positioned at two opposite ends of the bearing part, and the bearing part rotates relative to the bracket components to be matched with different weight plates; the gear shifting bracket synchronously rotates with the bearing part, a clamping part is arranged on the gear shifting bracket, a plurality of through holes are formed in the clamping part, and each through hole corresponds to one adjusting gear; the base is used for bearing the dumbbell body, and a locking piece matched with the clamping part is arranged on the base; the gear shifting bracket is configured to move to a position corresponding to the locking member when rotating to a corresponding gear shifting position, so as to allow the locking member to be disengaged from the position of the through opening. This disclosed dumbbell, through the cooperation of locking piece and through-hole, make the user only can break away from the base with dumbbell body after adjusting to a gear. The user is at the in-process of body-building, and the safety and stability of dumbbell can not cause the potential safety hazard, and the user uses and experiences well.

Description

Dumbbell

Technical Field

The disclosure relates to the field of sports equipment, in particular to a dumbbell.

Background

Dumbbells are widely used as fitness equipment for chest extension exercises, biceps brachii exercises, deltoid exercises and the like.

Existing dumbbells are divided into dumbbells with a fixed weight and dumbbells with an adjustable weight. Wherein weight adjustable dumbbell, after carrying out weight control, the position that appears the user easily and adjusts is in the intermediate position of two gears, but the user does not know after adjusting the completion, and the in-process of motion appears the condition that the dumbbell piece dropped. The problem of potential safety hazard is easy to occur in the use process.

SUMMERY OF THE UTILITY MODEL

The present disclosure provides a dumbbell to solve the problems in the prior art.

According to a first aspect of the present disclosure, there is provided a dumbbell comprising:

the dumbbell body comprises a bearing part and bracket assemblies positioned at two opposite ends of the bearing part, wherein the bearing part is configured to rotate relative to the bracket assemblies so as to be matched with different weight plates; the dumbbell body further comprises a gear shifting support which synchronously rotates with the bearing part, a clamping part is arranged on the gear shifting support, a plurality of through holes are formed in the clamping part, and each through hole corresponds to one adjusting gear;

a base configured to carry the dumbbell body; the base is provided with a locking piece which is matched with the clamping part;

the gear shifting bracket is configured to move to a position corresponding to the locking piece when rotating to a corresponding gear shifting position, so as to allow the locking piece to be disengaged from the position of the through hole.

In one embodiment of the present disclosure, the engaging portion is located at an edge position of the shift bracket and is configured to extend in a rotational axis direction of the shift bracket.

In one embodiment of the disclosure, the locking member includes an extending portion disposed on the base, and a locking portion located at a free end of the extending portion, and the locking portion is configured to extend from an outer side of the shift bracket to a direction of the engaging portion to engage with the engaging portion.

In one embodiment of the present disclosure, the gear shifting bracket is circular, and the engaging portion is located in a circumferential direction of the gear shifting bracket; the gear shifting support is configured in such a way that in the rotating process, the locking part is always matched with the clamping part until the through hole rotates to the position corresponding to the locking part.

In one embodiment of the present disclosure, a gap is provided between the locking portion and an inner side surface of the engaging portion.

In one embodiment of the present disclosure, the bracket assembly includes a front end cover and a rear end cover which are oppositely arranged, and a connecting frame which connects the front end cover and the rear end cover; an open slot is defined between the front end cover and the rear end cover; the open slot is configured to receive the weight plate; the gear shifting support is positioned in the front end cover, and an opening for the locking piece to penetrate is further formed in the bottom of the front end cover.

In one embodiment of the present disclosure, a gear mechanism is disposed between the gear shifting bracket and the connecting frame, and the gear mechanism includes at least one matching portion pre-pressed between the gear shifting bracket and the connecting frame, and a gear hole disposed on the gear shifting bracket or the connecting frame; when the gear shifting support rotates to a position where the matching part corresponds to the gear hole, the matching part is matched with the gear hole under the action of elastic force.

In one embodiment of the present disclosure, two gear shifting brackets are provided, and are respectively located at the positions of the two bracket assemblies; the locking piece is provided with two, is located the position that corresponds with corresponding gear shifting support on the base respectively.

In one embodiment of the present disclosure, a self-locking mechanism is disposed on the bracket assembly, the self-locking mechanism includes a fixture block pre-pressed between the bracket assembly and the base, and when the bracket assembly is configured to be detached from the base, the fixture block moves to be matched with a through hole disposed on the gear shifting bracket under the action of an elastic force, so as to prevent the gear shifting bracket from rotating; and when the bracket component is placed on the base, the fixture block moves to leave the through opening under the extrusion acting force of the base so as to allow the gear shifting bracket to rotate.

In one embodiment of the present disclosure, a jacking portion for jacking up the fixture block is disposed on the base.

In one embodiment of the present disclosure, the latch is configured to be guided and engaged with the bracket assembly, and the latch includes a latch body and a flange extending from the latch body; the flange is configured to be fitted with or detached from the through-opening.

In one embodiment of the present disclosure, the bearing part includes a bearing shaft and a sleeve, two ends of the bearing shaft are respectively rotatably connected with the two bracket assemblies, and the bearing shaft is configured to bear the bracket assemblies; the two sleeves are respectively sleeved at two ends of the bearing shaft and are configured to move along the extension direction of the bearing shaft under the rotation of the bearing shaft to be matched with different counterweight plates.

This public one beneficial effect lies in, makes dumbbell body unable and the base break away from through the cooperation of block portion and locking piece. When the user adjusts the counter weight gear on the base, the bearing part only rotates to corresponding gear after, just can allow to make dumbbell body and base break away from, has improved the security of counter weight dumbbell.

Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a schematic structural view of a dumbbell of the present disclosure;

FIG. 2 is a cross-sectional view of a dumbbell of the present disclosure;

FIG. 3 is an exploded view of the dumbbell of the present disclosure;

FIG. 4 is a schematic view of the structure of the load bearing portion of the dumbbell of the present disclosure;

FIG. 5 is a schematic diagram of a shift bracket in a dumbbell according to the present disclosure;

FIG. 6 is a cross-sectional view of a shift bracket in the dumbbell of the present disclosure;

FIG. 7 is a schematic view of the structure of the connection frame in the dumbbell of the present disclosure;

FIG. 8 is a schematic structural view of a weight plate in a dumbbell of the present disclosure;

FIG. 9 is a schematic view of the connection sleeve in the dumbbell of the present disclosure;

fig. 10 is a schematic view of another angle of the shift bracket in the dumbbell of this disclosure.

The one-to-one correspondence between the names of the various components and the reference numbers in fig. 1-10:

1. the automatic locking device comprises a base, 11, a jacking portion, 12, a placement groove, 13, a separation strip, 21, a bearing shaft, 211, a second limiting portion, 22, a sleeve, 221, a first limiting portion, 23, a front end cover, 24, a rear end cover, 25, a connecting frame, 251, a first limiting groove, 252, a protrusion, 261, a connecting sleeve, 2611, a second limiting groove, 2612, a third limiting portion, 262, a gear shifting bracket, 2621, a gear hole, 2622, a clamping portion, 2623, a through hole, 2624, a limiting hole, 27, a first elastic element, 28, a rubber sleeve, 29, a protective sleeve, 3, a counterweight sheet, 31, an opening, 32, a circular opening, 4, a self-locking mechanism, 41, a second elastic element, 42, a fixture body, 421 a flange, 5, a locking key, 51, an extending portion and 52 a locking portion.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

The dumbbell of this disclosure includes dumbbell body and is used for placing the base of dumbbell body.

The dumbbell body includes bearing portion, bracket component and gear shifting support. The bracket component sets up the both ends at the portion of bearing, and the portion of bearing sets up in the bracket component, can rotate for the bracket component, through rotating the portion of bearing, can make the portion of bearing and the weight stack cooperation that is located different quantity on the base be in the same place to change the weight of dumbbell, adapt to the different demands of user's body-building.

The gear shifting support rotates synchronously with the bearing part, the gear shifting support is provided with a clamping part, the clamping part is provided with a plurality of through holes penetrating through the clamping part, different through holes correspond to different gears, for example, one through hole can correspondingly increase the weight of five kilograms.

The base not only is used for placing dumbbell body and counter weight piece, still be provided with on the base with block portion complex locking piece, when the user places the in-process of base with dumbbell body, the locking piece penetrates the through mouth on the support of shifting gears, when the user begins to adjust gears through rotating, block portion on the support of shifting gears rotates to be in the same place with locking piece and block portion cooperation, can interfere together between the two, the dumbbell body can't break away from with the base under the effect of locking piece this moment.

After a user adjusts a correct gear, the through hole in the corresponding position in the gear shifting support rotates to the position corresponding to the locking piece, and at the moment, the user can lift the dumbbell body to enable the dumbbell body to leave the base due to the fact that the locking piece is separated from the clamping portion. When a user does not adjust the dumbbell body to a correct gear, for example, the locking piece is located between two gears, and the through hole does not rotate to the position corresponding to the locking piece, the user cannot lift the dumbbell body to leave the dumbbell body.

This disclosed dumbbell, through the locking piece and set up a plurality of openings that link up rather than the complex mode, make the user only can break away from the base after adjusting to a correct gear. Thereby avoided user's maloperation or when the gear shifting is not in place, caused the counter weight piece to drop after picking up dumbbell body, caused the potential safety hazard.

For the convenience of understanding, specific structures and working principles of the present disclosure are described in detail below with reference to fig. 1 to 10 of the drawings in conjunction with embodiments.

In one embodiment of the present disclosure, as shown in fig. 2 and 5, the dumbbell includes a dumbbell body and a base 1. Dumbbell body includes bearing part, bracket component and the support 262 of transferring files, and bearing part is located dumbbell body's middle part, and the bracket component setting is at the both ends of bearing part, and the bearing part can rotate for the bracket component, for example through the bearing with the bracket component rotate to be connected together, this disclosure does not do the restriction to this. When the user rotated the bearing part, the bearing part can take place the displacement to can be in the same place with the cooperation of the counter weight piece 3 of different quantity, the user when mentioning dumbbell body and leave the base, the counter weight piece of different quantity makes dumbbell body have different weight, satisfies user's exercise demand.

The gear shifting bracket 262 is disposed in the bracket assembly, one gear shifting bracket 262 can be disposed in one of the bracket assemblies, and two gear shifting brackets 262 can also be disposed in two of the bracket assemblies. The shift bracket 262 rotates in synchronization with the carrier, an engaging portion 2622 is provided on the shift bracket 262, a plurality of through holes 2623 penetrating the engaging portion 2622 are provided on the engaging portion 2622, and different through holes 2623 represent different shift positions. For example, if there are four shift positions during one rotation of the carrier, the engaging portion 2622 is provided with four through holes 2623. When the bearing portion is completely shifted to a corresponding adjustment gear, the corresponding through hole 2623 is correspondingly rotated to a corresponding position.

Referring to fig. 1 and 2, the base 1 is used for placing the dumbbell body and the weight plates 3, a placing groove 12 is provided on the base 1, and the weight plates 3 are stored in the placing groove 12 in the base 1 before weight adjustment. A plurality of isolation bars 13 are further arranged in the placing groove 12, and different numbers of weight plates 3 are isolated and arranged through the isolation bars 13. The base 1 is used for placing the dumbbell body and the counterweight plates 3, the locking pieces 5 are further arranged on the base 1, and the number of the locking pieces 5 is consistent with that of the gear shifting supports 262.

The locking member 5 can be engaged with the engaging portion 2622 of the shift bracket 262 during shifting to limit the dumbbell body from leaving the base 1. When the gear needs to be adjusted, the user places the dumbbell body on the base 1, and the locking piece 5 penetrates through the through opening 2623. After placing the completion, the user rotates the supporting part, and the support 262 of shifting gears rotates with the supporting part is synchronous, rotates the in-process, and locking piece 5 and block 2622 cooperate together.

When the user adjusts to a correct gear, through hole 2623 on the gear shifting support 262 can rotate to the position that corresponds with locking piece 5, and the user can then lift the dumbbell body, makes it break away from base 1, can not receive the hindrance of locking piece 5. When the user does not adjust the dumbbell body to a correct gear, for example, the user rotates the carrying part to make the position of the locking member 5 be located between the two through holes 2623, and at this time, the locking member 5 still fits with the latching part 2622 of the gear shifting bracket 262, so that the user cannot lift the dumbbell body to leave the base 1. Through block 2622 on locking piece 5 and the support 262 of shifting gears and the cooperation of lining up mouth 2623, make the user after mentioning dumbbell body and make it leave base 1, dumbbell body must be in on a exact gear, and can not be in between two gears, lead to the user to drop at body-building in-process counterweight piece 3, cause the safety problem, influence the user and use experience.

In one embodiment of the present disclosure, referring to fig. 2 and 6, the engaging portion 2622 is located at an edge of the shift bracket 262 and extends along a rotation axis direction of the shift bracket 262. Referring to the view of fig. 6, the engagement portion 2622 extends in the axial direction from an edge position of the shift bracket 262 such that the engagement portion 2622 is perpendicular to an end surface of the shift bracket 262. The locking member 5 includes an extension 51 disposed on the base, in this embodiment, the extension 51 extends vertically upward and is located on one side of the shift bracket 262 near the weight plate 3, so that the user can enter the dumbbell body through the bracket assembly when placing the dumbbell body on the base 1. A locking portion 52 is disposed at a free end of the extending portion 51, and the locking portion 52 extends from the end of the extending portion 51 toward the shift bracket 262, is located above an inner side surface of the engaging portion 2622, and has a certain distance from a surface of the engaging portion 2622.

The locking portion 52 is spaced from the engaging portion 2622 instead of abutting against the engaging portion 2622, so as to prevent the friction between the locking portion 52 and the engaging portion 2622 from obstructing the rotation of the shift bracket 262 or from being locked and unable to rotate during the rotation of the shift bracket 262 due to the contact between the locking portion 52 and the engaging portion 2622.

In the process that the user places the dumbbell body on the base 1, the extending portion 51 and the locking portion 52 pass through the bracket assembly and the through hole 2623 on the clamping portion 2622 and enter the dumbbell body, and because the initial state of the dumbbell body is not yet adjusted in the gear at this moment, the through hole 2623 and the locking piece 5 are located at the corresponding positions, and the locking piece 5 can enter the dumbbell body. When the user starts to rotate the bearing part to adjust the gear, the gear shifting bracket 262 also rotates synchronously with the bearing part, the through opening 2623 is staggered with the locking piece 5 in the rotating process, and the locking part 52 is located above the clamping part 2622, so that the locking part 52 does not block the gear shifting bracket 262 from rotating.

When the user lifts the dumbbell body without adjusting to a correct position, the locking portion 52 is located above the latching portion 2622 and blocks the upward movement of the latching portion 2622, so that the user cannot lift the dumbbell body off the base 1. When the user adjusts to a correct position, the locking portion 52 is overlapped with the through opening 2623 of the engaging portion 2622, and the locking member 5 does not obstruct the user from lifting the dumbbell body to separate it from the base 1.

In an embodiment of the present disclosure, referring to fig. 5 and 6, the shift bracket 262 is circular, the engaging portion 2622 is disposed in a circumferential direction of the shift bracket 262 and extends toward a rotation axis of the shift bracket 262, and the engaging portion 2622 is provided with four through holes 2623, so that when a user adjusts a shift position, the user can adjust four shift positions. The through holes 2623 may be uniformly provided along the circumferential direction of the engagement portions 2622, or may be non-uniformly provided along the circumferential direction of the engagement portions 2622.

In this embodiment, four through holes 2623 are disposed unevenly in the circumferential direction of the engaging portion 2622, wherein the distance between two through holes 2623 is significantly greater than the distance between the other through holes 2623, and one of the two through holes 2623 that are far away is the initial position of the shift bracket 262. The carrier part is not yet fitted with any weight plates 3 at the moment when the user has just made a gear adjustment. After the user rotates the bearing part by more angles, the bearing part is matched with a plurality of weight plates 3, and the through openings 2623 densely arranged on the clamping part 2622 can make the user more accurate in weight adjustment. In this embodiment, during the gear shifting process of the user, the movement process and the matching relationship of the locking member 5, the engaging portion 2622 and the through hole 2623 of the gear shifting bracket 262 are the same as those described in the above embodiment, and are not repeated herein.

In one embodiment of the present disclosure, referring to fig. 2 and 3, the bracket assembly includes a front end cap 23, a rear end cap 24, and a connecting bracket 25 disposed between the front end cap 23 and the rear end cap 24. And, the front end cover 23, the rear end cover 24 enclose an open slot therebetween, which is configured to accommodate the weight plate 3.

Each bracket component comprises at least one screw which sequentially penetrates through the rear end cover 24 and the connecting frame 25 and then is in threaded connection with the front end cover so as to fixedly connect the three components into a whole. That is, the support is formed by assembling three components in a detachable mode in a modularized way, and when one of the components is damaged, the component can be replaced at will. Of course, the bracket of the present disclosure may also be an integrally formed part, according to another embodiment of the present disclosure.

With continued reference to fig. 3, the front end cover 23, the connecting frame 25 and the rear end cover 24 are all provided with central holes, and the central holes of the three components are coaxially arranged, and one end of the bearing shaft 21 sequentially passes through the central holes of the front end cover 23 and the connecting frame 25, and is rotatably connected to the rear end cover 24 through a rotating bearing located on the central hole of the rear end cover 24. Thus, the bearing shaft 21 can rotate relative to the bracket when subjected to an external force.

It should be noted that the terms "front and back" as used herein in describing the stand are set relative to the user's hand-held portion in the dumbbell use state, wherein the side close to the user's hand is front and the side away from the user's hand is back.

So, when installing counterweight plate 3, the user can utilize the guide of open slot to insert counterweight plate 3 appointed position fast, has avoided the user to look for the butt joint position by oneself and has caused the problem that weight adjustment process time is long, the degree of difficulty is big.

With continued reference to fig. 3, in this embodiment, the front end cap 23 and the rear end cap 24 of the present disclosure are generally square.

In detail, the front end cover 23 is integrally square and connected with the connecting frame 25, the gear shifting bracket 262 is located in the front end cover 23, and an opening is formed in a part of the front end cover 23 coinciding with the locking piece 5 on the base 1, so that the locking piece 5 can enter the dumbbell body through the front end cover 23 and can be matched with the gear shifting bracket 262.

The rear end cover 24 is also square, and two ends of the bearing shaft 21 are rotatably connected to the rear end cover 24 respectively, and the rotatable connection may be performed by a bearing or other means known to those skilled in the art for rotatable connection, which will not be described herein in detail.

The connecting frame 25 is arranged between the front end cover 23 and the rear end cover 24, and can be fixedly connected with the front end cover 23 and the rear end cover 24 through bolts, and besides the bolts can be arranged for connection, the connecting frame 25 can be further connected with the front end cover 23 and the rear end cover 24 through bonding, clamping and other modes.

The protecting sleeve 29 is arranged outside the support assembly, the protecting sleeve 29 extends from the position of the front end cover 23 to the direction of the rear end cover 24, the extending part wraps the front end cover 23, the connecting frame 25 and the rear end cover 24, and meanwhile, an opening is formed below the extending part of the protecting sleeve 29, so that a user can smoothly put the counterweight plate 3 into the open slot when installing the counterweight plate 3.

Referring to fig. 7, the middle part of the connecting frame 25 is provided with a circular hole for the bearing shaft 21 and the sleeve 22 to pass through, and two sides of the connecting frame 25 are further provided with isolation grooves, after the weight plate 3 enters the open slot, the isolation grooves are used for limiting the axial movement of the weight plate 3 in the process of weight adjustment of the dumbbell, so as to ensure the stability of the weight plate 3 in the adjustment process.

In one embodiment of the present disclosure, referring to fig. 4, the load-bearing part includes a load-bearing shaft 21 and sleeves 22 at both ends of the load-bearing shaft, the sleeves 22 can be moved along the extending direction of the load-bearing shaft 21 by rotating the load-bearing shaft 21 to be inserted into the weight plates 3, and the sleeves 22 can be matched with different numbers of weight plates 3 along with the movement of the sleeves to change the weight of the dumbbell body.

Referring to fig. 2 and 4 in one embodiment of the present disclosure, the bearing part further includes a connection sleeve 261, the bearing shaft 21 and the two sleeves 22 are located in an inner cavity of the connection sleeve 261, and the connection sleeve 261 is configured to be connected with the bearing shaft 21 and configured to rotate the bearing shaft 21.

With continued reference to fig. 2, the middle connecting sleeve 261 of the present disclosure includes a left connecting sleeve and a right connecting sleeve, which are connected to the bearing shaft 21 after being left-right spliced, so as to limit the relative rotation of the bearing shaft 21 with respect to the connecting sleeve 261, that is, the connecting sleeve 261 can drive the bearing shaft 21 to rotate synchronously therewith when rotating. In detail, the left connecting sleeve and the right connecting sleeve can be connected with the bearing shaft 21 in a key connection manner. The connection sleeve 261 is cylindrical and hollow as a whole.

When the dumbbell is assembled, the left connecting sleeve and the right connecting sleeve are firstly sleeved on the bearing shaft 21 from the two end parts of the bearing shaft 21 and are connected with the bearing shaft 21 in a key connection mode, then the two sleeves 22 are sleeved on the bearing shaft 21 from the two end parts of the bearing shaft 21, and the two sleeves 22 move along the extension direction of the bearing shaft 21 when the bearing shaft 21 rotates.

Thus, the connecting sleeve 261 drives the bearing shaft 21 to rotate, so that the holding area becomes larger, and the dumbbell weight can be more conveniently adjusted.

In an embodiment of the present disclosure, a second position-limiting portion 211 is disposed at a middle portion of the bearing shaft 21, and a second position-limiting groove 2611 engaged with the second position-limiting portion 211 is disposed at one end of the connecting sleeve 261. The middle of the bearing shaft 21 is engaged with the connecting sleeve 261 through the second limiting portion 211 and the second limiting groove 2611. The second limiting portion 211 may be configured to have a cross section in a shape of a waist, and the second limiting groove 2611 is adapted to the shape of the second limiting portion 211.

Of course, the shapes of the second retaining groove 2611 and the second retaining portion 211 may also be other suitable shapes, such as a rectangle, a triangle, etc., which is not limited in this disclosure. When the connecting sleeve 261 is rotated, the second limiting portion 211 is engaged with the second limiting groove 2611, so that the connecting sleeve 261 can drive the bearing shaft 21 to rotate.

Since the gear shifting bracket 262 rotates synchronously with the bearing shaft 21, in an embodiment of the present disclosure, referring to fig. 5 and 9, a limiting hole 2624 is formed in a middle portion of the gear shifting bracket 262, and the connecting sleeve 261 extends into the limiting hole 2624 and drives the gear shifting bracket 262 to rotate synchronously under an external force. The contour line of the limiting hole 2624 is surrounded by the arc line segment and the straight line segment and is shaped, correspondingly, the contour line of the peripheral wall on the connecting sleeve 261, which is matched with the limiting hole 2624, also surrounds the third limiting part 2612 of the shaped by the arc line segment and the straight line segment, so that the gear-shifting bracket 262, the connecting sleeve 261 and the bearing shaft 21 can synchronously rotate, and the detachable connection relationship between the gear-shifting bracket 262 and the connecting sleeve 261 can be realized, thereby being convenient for maintaining or replacing damaged parts.

In one embodiment of the present disclosure, the carrying portion further includes a rubber sleeve 28, and the rubber sleeve 28 is fixedly sleeved on the connecting sleeve 261 and configured to be held by a user.

Therefore, when a user needs to drive the bearing shaft 21 to rotate, the user holds and rotates the rubber sleeve 28, and the connecting sleeve 261 rotates synchronously with the rubber sleeve 28. When a user applies torsion to the connecting sleeve 261 through the rubber sleeve 28, the friction force at the matching position of the rubber sleeve 28 and the hand is large, the user can drive the connecting sleeve 261 to rotate by applying small torsion, the connecting sleeve 261 is not easy to slip when the user rotates, and the process of adjusting the weight of the dumbbell is more stable. Of course, the rubber sleeve 28 may be other components known to those skilled in the art to increase friction, such as grooves or protrusions on the outer surface of the connecting sleeve 261, which is not limited by the present disclosure.

Of course, according to an embodiment of the present disclosure, the bearing portion of the present disclosure may omit the rubber sleeve 28, and the user directly applies a torsion force to the connecting sleeve 261 to drive the bearing shaft 21 to rotate.

In one embodiment of the present disclosure, referring to fig. 4, a threaded groove is provided at both ends of the bearing shaft 21 where the sleeve 22 is provided, and a protrusion that fits with the threaded groove of the bearing shaft 21 is provided at one end of the sleeve 22. The sleeve 22 is generally tubular, and the protrusion is disposed inside one end of the sleeve 22, and the shape of the protrusion may be hemispherical, but the shape of the protrusion may also be other shapes known to those skilled in the art to be capable of matching with the thread groove, and the disclosure is not limited thereto.

In order to prevent the sleeve 22 from rotating along with the bearing shaft 21 during the movement of the sleeve 22 on the bearing shaft 21, in one embodiment of the present disclosure, a guiding mechanism is provided between the bracket assembly and the sleeve 22 for guiding the sleeve 22 to move along the extending direction of the bearing shaft 21 when the bearing shaft 21 rotates, rather than rotating along with the bearing shaft 21. Referring to fig. 4 and 7, the guiding mechanism includes a first limiting groove 251 and a first limiting portion 221. The first limit groove 251 is arranged in the circular hole in the middle of the connecting frame 25, the first limit part 221 is arranged at one end of the sleeve 22, the shapes of the first limit part 221 and the first limit groove 251 can be matched semi-circular shapes, abrasion caused by relative sliding of the first limit part 221 and the first limit groove 251 is reduced, and when the first limit part 221 and the first limit groove 251 are clamped together, the sleeve 22 can only move along the extending direction of the bearing shaft 21 and cannot rotate along with the bearing shaft 21. Of course, the shapes of the first limiting groove 251 and the first limiting portion 221 may also be other suitable shapes, such as a rectangle, a triangle, etc., which is not limited in this disclosure.

When the bearing shaft 21 starts to rotate, the threads on the bearing shaft 21 also rotate, the first protrusions 222 are matched in the threads, but due to the limitation of the first limiting part 221 on the sleeve 22 and the first limiting groove 251 on the connecting frame 25, the sleeve 22 can only slide on the bearing shaft 21 under the driving of the threads, and the sleeve 22 can be matched with different numbers of weight plates 3 by controlling the moving distance of the sleeve 22, so that the effect of adjusting the weight of the dumbbell is achieved. When the first protrusion 222 is located on the bearing shaft 21 and the thread is located inside the sleeve 22, the movement principle is the same as the above, and will not be described in detail. Of course, the purpose of the bearing shaft 21 driving the sleeve 22 to slide can also be achieved by providing a thread inside the sleeve 22, which is matched with the thread on the bearing shaft 21, and the disclosure is not limited thereto.

It should be noted that the thread groove is specifically a left-handed spiral groove or a right-handed spiral groove disposed on the outer peripheral wall of the bearing shaft 21, and when the user drives the bearing shaft 21 to rotate through the connection sleeve 261, due to the limitation of the guiding mechanism, the sleeve 22 can only move along the thread groove in the axial direction relative to the bearing shaft 21, and cannot rotate along with the bearing shaft 21.

According to an embodiment of the present disclosure, the thread groove and the first protrusion may be reversed, that is, the thread groove may be disposed inside the sleeve 22, and the first protrusion 222 may be disposed on the bearing shaft 21.

Similarly, the guiding mechanism including the first position-limiting groove and the first position-limiting portion may be disposed in a reverse direction, that is, the first position-limiting groove is disposed on the sleeve 22, and correspondingly, the first position-limiting portion is disposed on the connecting frame 25.

According to another embodiment of the present disclosure, the sleeve 22 and the bearing shaft 21 of the present disclosure may also be connected by matching internal threads and external threads, and since the guiding mechanism limits the rotation of the sleeve 22 relative to the bearing shaft 21, when the bearing shaft 21 rotates, the sleeve 22 can only move linearly along the extending direction of the bearing shaft 21, so as to extend or retract the sleeve 22 from or into the connecting sleeve 261.

Based on this kind of structure, the theory of operation of load-bearing part is: when a user holds the rubber sleeve by hand and applies a torque force along the first direction, the connecting sleeve 261 drives the bearing shaft 21 to rotate synchronously, and the two sleeves 22 move oppositely along the extending direction of the bearing shaft 21 to gradually extend out of the connecting sleeve 261 to be inserted into the through holes of the weight plates 3 respectively.

On the contrary, when the user holds the rubber sleeve and applies a torque force along the second direction, the connection sleeve 261 drives the bearing shaft 21 to rotate synchronously, and the two sleeves 22 move towards each other along the extending direction of the bearing shaft 21 to gradually leave the through hole of the weight plate 3 and extend into the connection sleeve 261. Wherein, one of the first direction and the second direction is clockwise, and the other is anticlockwise.

In one embodiment of the present disclosure, referring to fig. 8, the weight plate 3 is embodied in a square structure, the weight plate 3 has a notch extending along a radial direction thereof, and the weight plate is configured such that when the weight plate is snapped into the bracket assembly, the notch is engaged with the connecting frame 25, a middle portion of the notch forms a through hole for the sleeve 22 to extend into or exit from, the notch includes a flared opening 31 at an upper portion for engaging with the connecting frame 25 and a circular opening 32 for the sleeve 22 to extend into or exit from, and a width of a connection portion of the flared opening 31 and the circular opening 32 is larger than a diameter of the bearing shaft 21 and smaller than a diameter of the sleeve 22.

In this way, when the sleeve 22 is inserted into the circular opening 32, the weight plate 3 and the sleeve 22 form a unitary structure, i.e. the weight plate 3 is mounted on the load-bearing part, and when the user lifts the load-bearing part, the weight plate 3 is also lifted.

Conversely, when the user rotates the bearing shaft 21 to move the sleeve 22 away from the circular opening 32 of the weight plate 3, and the user lifts the bearing part, the connecting frame 25 moves relative to the weight plate 3 along the gap direction of the weight plate 3 to move away from the constraint formed on the weight plate 3, and the weight plate 3 is detached.

When a user installs a weight plate 3 on the bearing part, the weight plate 3 is clamped into the open slot formed between the front end cover 23 and the rear end cover 24, the connecting frame 25 is clamped into the gap of the weight plate 3, and the bearing shaft 21 is inserted into the circular opening 32, at this time, the user rotates the bearing shaft 21 until the sleeve 22 extends into the circular opening 32 of the weight plate 3 to connect the weight plate 3 to the bearing part. The weight plate 3 can be removed by rotating the bearing shaft 21 reversely.

The counterweight plate 3 is provided with a notch to form a guiding and positioning function, so that a user can quickly and accurately install the counterweight plate 3 to the designated position of the bearing part along the notch, and the dismounting and mounting process of the counterweight plate 3 is simple and quick.

In one embodiment of the present disclosure, a shift position mechanism is provided before the shift bracket 262 and the connecting frame 25, and the shift position mechanism includes at least one engaging portion pre-pressed between the shift bracket 262 and the connecting frame 25, and a shift position hole 2621 provided on the shift bracket 262 or the connecting frame 25.

In detail, referring to fig. 5 and 7, in the present embodiment, at least one of the matching portions includes a first elastic member 27 and a protrusion 252, the first elastic member 27 may be an elastic member such as a spring, etc., the protrusion 252 may be a steel ball, and the protrusion 252 is connected in the connecting frame 25 through the first elastic member 27. The shift position hole 2621 is a circular hole provided in one end surface of the shift bracket 262.

When a user drives the gear shifting support 262 to rotate relative to the connecting frame 25 through the connecting sleeve 261 and the gear holes 2621 and the protrusions 252 are located correspondingly, the protrusions 252 are clamped into the gear holes 2621 under the action of the elastic force of the first elastic piece 27, in the process, the user can make a slight click, and meanwhile, the user can feel a slight impact force generated when the protrusions 252 are clamped into the gear holes 2621, which indicates that the user has adjusted the dumbbell to a gear, and the user can obtain an obvious prompt message, thereby being beneficial to improving the use experience of the user.

For example, when the bearing shaft 21 rotates one hundred eighty degrees, the protrusion 252 is positioned corresponding to the shift position hole 2621 such that the protrusion 252 fits into the shift position hole 2621, and at this time, the bearing shaft 21 rotates a fixed angle to place the dumbbell in a shift position, which increases the weight of the dumbbell by a fixed amount. After the protrusions 252 are matched with the shift holes 2621, a certain damping effect is achieved, so that a user can continuously adjust the weight of the dumbbell by using a larger force, and the user is reminded that the weight of the dumbbell has been increased by a fixed amount.

Obviously, in the present embodiment, a prompt signal corresponding to the number of the weight plates 3 to be detached can be provided to the user through the shift mechanism. However, when the usage environment of the dumbbell is noisy, the prompt tone or the impact force of the gear mechanism is not easy to be sensed by the user or is not accurate enough due to the influence of the external environment.

In an embodiment of the present disclosure, referring to fig. 1 and 4, a plurality of gear scales are provided on the connection sleeve 261, the plurality of gear scales correspond to a plurality of adjustment gears of the dumbbell, and an arrow indicating the gear scales is provided on the front end cover 23. So, when rotating adapter sleeve 261, the scale on adapter sleeve 261 also rotates along with adapter sleeve 261 synchronization, when the user adjusts the dumbbell to an adjustment gear, can show through the scale on adapter sleeve 261, and the user of being convenient for learns the actual weight of dumbbell more directly perceivedly according to the gear scale on adapter sleeve 261.

For example, when a user rotates the connecting sleeve 261 to drive the bearing shaft 21 to rotate, the scale on the connecting sleeve 261 and the gear shifting bracket 262 also rotate synchronously, after the bearing shaft 21 rotates by a certain angle, the dumbbell is positioned on a gear shifting position, the scale and the gear shifting bracket 262 also rotate by the same angle, at this time, the scale displays the gear of the dumbbell, after the gear hole 2621 on the gear shifting bracket 262 rotates by a certain angle, the gear hole 2621 corresponds to the position of the protrusion 252 on the connecting frame 25, and the protrusion 252 is pushed into the gear hole 2621 under the action of the first elastic element 27 to prompt the user that the dumbbell is already in a gear shifting position. The two modes prompt the user together, so that the user is not easy to miss the gear to be adjusted, and the use experience of the user is improved.

In one embodiment of the present disclosure, referring to fig. 2, a self-locking mechanism 4 is further provided on the bracket assembly. The self-locking mechanism 4 is located on the connecting frame 25, see fig. 7, and a mounting groove is further provided in the connecting frame 25 for mounting the self-locking mechanism 4. Self-locking mechanism 4 can be when base 1 is left to the dumbbell body, and the rotation of restriction bearing axle 21 guarantees security and the stability of user in the use dumbbell process.

The self-locking mechanism 4 comprises a fixture block, the fixture block comprises a fixture block body 42, and the fixture block body 42 is arranged in the front end cover 23 and pre-pressed between the front end cover 23 and the base 1. When the dumbbell body leaves the base 1, the fixture block body 42 moves to be matched with the through hole 2623 formed in the shift bracket 262 under the action of the elastic force, so as to limit the rotation of the shift bracket 262.

In an embodiment of the present disclosure, referring to fig. 6 and 10, the self-locking mechanism 4 further includes a second elastic member 41, and the elastic force for driving the latch body 42 to move may be provided by the second elastic member 41. The second elastic member 41 may be a spring, the latch body 42 is a rectangular block, and a flange 421 is further disposed on the latch body 42, and the flange 421 extends toward the shift bracket 262.

Referring to fig. 3 and 5, when the dumbbell body is located in the base 1, the engaging portion 2622 of the shift bracket 262 is located below the flange 421 of the fixture block 42, and the flange 421 is separated from the through hole 2623, so that the connecting sleeve 261 can drive the bearing shaft 21 and the shift bracket 262 to rotate, and after the weight of the dumbbell body is adjusted, the through hole 2623 is located corresponding to the position of the flange 421. After lifting up the dumbbell body, the fixture block body 42 no longer receives the extrusion of base 1 to make the fixture block body 42 can make the downward motion under the effect of second elastic component 41 to with link up mouthful 2623 and cooperate together, make adapter sleeve 261 can not rotate, improve stability and the security of dumbbell in the use.

In one embodiment of the present disclosure, as shown in fig. 1, a lifting portion 11 is disposed on the base 1, the position of the lifting portion 11 corresponds to the position of the self-locking mechanism 4, when the dumbbell body is placed on the base 1, the latch body 42 moves upward under the action of the lifting portion 11 to be separated from the through opening 2623 and is located above the engaging portion 2622, so as to allow the gear shifting bracket 262 to rotate. When the dumbbell body leaves the base 1, the latch body 42 moves downward under the action of the second elastic element 41 until the flange 421 is matched with the through opening 2623, so as to limit the rotation of the shift bracket 262.

This dumbbell, through locking piece 5 and self-locking mechanism 4 combined action, when the dumbbell body was located and carries out the gear adjustment on base 1, prevented through locking piece 5 that the user from when not adjusting a correct gear, just taken the dumbbell body from base 1. Potential safety hazards appear in the using process. Through self-locking mechanism 4, the restriction dumbbell body is in the back of taking up from base 1, and the portion of bearing wherein can not rotate, makes the dumbbell in the use, and safety and stability, user use experience is good.

The foregoing description of the embodiments of the present disclosure has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the market, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims (12)

1. A dumbbell, comprising:

the dumbbell body comprises a bearing part and bracket assemblies positioned at two opposite ends of the bearing part, wherein the bearing part is configured to rotate relative to the bracket assemblies so as to be matched with different weight plates (3); the dumbbell body further comprises a gear shifting support (262) which synchronously rotates with the bearing part, a clamping part (2622) is arranged on the gear shifting support (262), a plurality of through holes (2623) are formed in the clamping part (2622), and each through hole (2623) corresponds to one gear to be adjusted;

a base (1), the base (1) being configured for carrying the dumbbell body; the base (1) is provided with a locking piece (5) which is matched with the clamping part (2622);

the gear shifting bracket (262) is configured to move the through opening (2623) to a position corresponding to the lock member (5) when rotated to a corresponding shift position to allow the lock member (5) to be disengaged from the position of the through opening (2623).

2. The dumbbell of claim 1, wherein the engaging portion (2622) is located at an edge position of the shift bracket (262) and is configured to extend in a rotational axis direction of the shift bracket (262).

3. The dumbbell of claim 2, wherein the locking member (5) comprises an extension part (51) provided on the base (1), and a locking part (52) located at a free end position of the extension part (51), and the locking part (52) is configured to extend from an outer side of the shift bracket (262) to a direction of the engaging part (2622) to be engaged with the engaging part (2622).

4. The dumbbell of claim 3, wherein the shift bracket (262) is circular, and the engaging portion (2622) is located in a circumferential direction of the shift bracket (262); the gear shifting bracket (262) is configured in such a way that the locking part (52) is always matched with the clamping part (2622) in the rotating process until the through hole (2623) rotates to a position corresponding to the locking part (52).

5. The dumbbell of claim 3, wherein the latch (52) has a gap with an inner side surface of the snap fitting (2622).

6. The dumbbell of claim 1, wherein the bracket assembly comprises a front end cap (23) and a rear end cap (24) which are oppositely arranged, and a connecting bracket (25) connecting the front end cap (23) and the rear end cap (24); an open slot is defined between the front end cover (23) and the rear end cover (24); the open slot is configured for accommodating the weight plate (3); the gear shifting support (262) is positioned in the front end cover (23), and an opening for the locking piece (5) to penetrate is further formed in the bottom of the front end cover (23).

7. The dumbbell of claim 6, wherein a shift mechanism is provided between the shift bracket (262) and the connecting frame (25), the shift mechanism including at least one fitting portion pre-pressed between the shift bracket (262) and the connecting frame (25), and a shift hole (2621) provided on the shift bracket (262) or the connecting frame (25); when the gear shifting support (262) rotates to a position where the matching part corresponds to the gear hole (2621), the matching part is matched with the gear hole (2621) under the action of elastic force.

8. The dumbbell of claim 1, wherein the shift bracket (262) is provided in two, respectively at the position of two bracket assemblies; the two locking pieces (5) are respectively located on the base (1) and correspond to the corresponding gear shifting support (262).

9. The dumbbell of claim 1, wherein the bracket assembly is provided with a self-locking mechanism (4), the self-locking mechanism (4) comprises a fixture block pre-pressed between the bracket assembly and the base (1), and when the bracket assembly is configured to be separated from the base (1), the fixture block moves to be matched with a through opening (2623) arranged on the gear shifting bracket (262) under the action of elastic force so as to prevent the gear shifting bracket (262) from rotating; and when the bracket assembly is placed on the base (1), the fixture block moves away from the through opening (2623) under the extrusion acting force of the base (1) so as to allow the gear shifting bracket (262) to rotate.

10. The dumbbell according to claim 9, wherein the base (1) is provided with a jacking portion (11) for jacking up the cartridge.

11. The dumbbell of claim 9, wherein the cartridge is configured for guided engagement with the cradle assembly, the cartridge including a cartridge body (42), and a flange (421) extending from the cartridge body (42); the flange (421) is configured to be fitted with the through-opening (2623) together or detached from the through-opening (2623).

12. The dumbbell of claim 1, wherein the bearing part comprises a bearing shaft (21) and a sleeve (22), and both ends of the bearing shaft (21) are respectively connected with the two bracket assemblies in a rotating way and are configured to bear the bracket assemblies; the two sleeves (22) are respectively sleeved at two ends of the bearing shaft (21) and are configured to move along the extension direction of the bearing shaft (21) under the rotation of the bearing shaft (21) to be matched with different counterweight plates (3).

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