CN109621294B

CN109621294B - Dumbbell

Info

Publication number: CN109621294B
Application number: CN201910106105.8A
Authority: CN
Inventors: 吴任政; 王利森
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-02-01
Filing date: 2019-02-01
Publication date: 2020-11-03
Anticipated expiration: 2039-02-01
Also published as: CN109621294A

Abstract

The invention relates to a dumbbell, which belongs to the technical field of fitness equipment and comprises a dumbbell main body and a support, wherein the dumbbell main body comprises at least four dumbbell pieces and a holding rod, one or two or more dumbbell pieces are respectively arranged at two ends of the holding rod, the holding rod is a telescopic rod, when the holding rod is telescopic, the number of the dumbbell pieces arranged at the two ends of the holding rod is changed, and the dumbbell pieces which are not arranged on the holding rod are placed on the support. By adopting the structure, when the weight of the dumbbell provided by the invention is adjusted, one or two or more dumbbell pieces can be selectively arranged at the end part of the holding rod only by driving the holding rod to stretch by a user, so that the weight of the whole dumbbell main body can be conveniently adjusted, a complicated knob is not needed, the operation is simple and convenient, more time and energy can be conveniently put on body building by the user, and the training feeling of the user is improved.

Description

Dumbbell

Technical Field

The invention belongs to the technical field of fitness equipment, and particularly relates to a dumbbell.

Background

The dumbbell is a very common fitness apparatus and mainly comprises a holding rod and dumbbell pieces, wherein the dumbbell pieces are arranged at two ends of the holding rod, the traditional dumbbell is divided into a plurality of models according to different weights, the weights of the traditional dumbbell pieces are not adjustable, and a plurality of sets of dumbbell pieces with different weights are required to be purchased by a user to meet the requirement of strength increase along with the increase of exercise time, so the cost is undoubtedly increased; later, the dumbbell that weight can be adjusted has appeared, and its structure is that dispose polylith dumbbell piece at the both ends of dumbbell pole, fixes through bolt and nut, and the user can dismantle the dumbbell piece as required, changes dumbbell piece quantity, but its troublesome poeration, need be with the help of instruments such as spanner, be not convenient for use.

Disclosure of Invention

The invention provides a dumbbell, which solves the technical problems that in the prior art, a weight-adjustable dumbbell is troublesome to operate when the weight is adjusted, needs tools such as a spanner and is inconvenient to use.

The invention is realized by the following technical scheme: a dumbbell comprises a dumbbell main body and a support, wherein the dumbbell main body comprises at least four dumbbell pieces and a holding rod, one or two or more dumbbell pieces are respectively arranged at two ends of the holding rod, the holding rod is a telescopic rod, when the holding rod stretches, the number of the dumbbell pieces arranged at the two ends of the holding rod is changed, and the dumbbell pieces which are not arranged on the holding rod are placed on the support.

Furthermore, in order to better realize the invention, the holding rod comprises a rotating part and a telescopic threaded pipe, the rotating part comprises a screw rod, a rotating head and an outer sleeve, the left end and the right end of the rotating head are respectively provided with one screw rod, each screw rod is respectively screwed with one telescopic threaded pipe, the outer sleeve is rotatably sleeved outside the telescopic threaded pipe, the screw rod and the rotating head, and the outer sleeve is in pin joint with the rotating head through a pin;

the left end and the right end of the outer sleeve are respectively provided with a side blocking component, the side blocking components comprise a shell A and a shell B, the shell A and the shell B are buckled together and can rotate mutually, the central positions of the shell A and the shell B are respectively provided with a through hole A and a through hole B which are just opposite to and communicated with each other, the end part of the outer sleeve is inserted into the through hole A and the through hole B, the shell A is positioned at a position far away from the end part of the outer sleeve, and the shell B is positioned at a position close to the end part of the outer sleeve;

the end part of the outer sleeve is provided with a key groove, the inner wall of the through hole A of the shell A is provided with a flat key, the flat key is connected in the key groove and is abutted against the groove wall of one end of the key groove far away from the end part of the outer sleeve, the position of the outer wall of the outer sleeve far away from the shell A is also provided with a clamp spring groove, a clamp spring is arranged in the clamp spring groove, and when the shell B and the shell A are buckled and covered together, the clamp spring limits axial displacement;

each end of the holding rod is provided with three dumbbell pieces which are detachably buckled with each other through a buckling structure, the dumbbell pieces are respectively an inner dumbbell piece close to the rotating head, an outer dumbbell piece far away from the rotating head and a middle dumbbell piece positioned between the inner dumbbell piece and the outer dumbbell piece, through holes for penetrating through the telescopic threaded pipe are formed in the middle of each of the inner dumbbell piece, the outer dumbbell piece and the middle dumbbell piece, a straight groove is formed in the outer wall of the telescopic threaded pipe along the axial direction of the telescopic threaded pipe, a sliding block is arranged on the inner wall of the through hole of the inner dumbbell piece and is inserted into the straight groove in a sliding mode, and the inner dumbbell piece and the shell B are detachably and fixedly connected through screws;

the dumbbell body is characterized in that the support is provided with a convex block, the shell B is provided with a notch, and when the dumbbell body is placed on the support, the convex block is inserted in the notch to limit the shell B to rotate.

Furthermore, in order to better realize the invention, a first mounting groove is arranged on the end face of one end, opposite to the shell A, of the shell B along the radial direction of the end face, an opening of the side wall, close to the edge of the shell B, of the first mounting groove forms the notch, a first telescopic block is mounted in the first mounting groove, the invention further comprises a first spring, the first spring is abutted between the first telescopic block and the wall of the first mounting groove, and the axial direction of the first spring is the radial direction of the shell B;

a through groove is formed in the first telescopic block, a through opening is formed in the wall of the first mounting groove, a circular ring coaxial with the through hole A is arranged on the end face, close to the shell B, of the shell A, a plurality of notches are formed in the circular ring, and the width of each notch is the same as that of the first telescopic block;

when the lug is inserted into the notch, the lug props against the first telescopic block, the through groove is communicated with the through opening, and the circular ring passes through the through groove and the through opening; when the dumbbell main body is not placed on the support, the protruding block is not inserted into the notch, the first telescopic block extends out and abuts against the edge of the B shell, the through groove and the through opening are staggered, and the first telescopic block is inserted into the notch and blocks the circular ring.

Furthermore, in order to better realize the invention, a second mounting groove is further arranged on the end face of one end, opposite to the shell A, of the shell B along the axial direction of the end face, a positioning ball is mounted in the second mounting groove, a circular groove and a convex ring which is connected with the outer wall of the circular groove and has the same height with the circular groove are further arranged on the end face of one end, opposite to the shell B, of the shell A, when the shell A rotates relative to the shell B, the ball of the positioning ball rolls on the convex ring and the notch of the circular groove, and when the telescopic threaded pipe is telescopically inserted into one or two or three of the three dumbbell pieces, the ball of the positioning ball falls into the circular groove.

Furthermore, in order to better realize the invention, a third mounting groove is further formed in the end face of one end, opposite to the shell A, of the shell B, a triangular tooth block is mounted in the third mounting groove, the invention further comprises a second spring axially in the same direction as the shell B, one end of the second spring abuts against the bottom of the third mounting groove, the other end of the second spring abuts against one end, close to the bottom of the third mounting groove, of the triangular tooth block, and one end, far away from the bottom of the third mounting groove, of the triangular tooth block is provided with triangular teeth and extends out of the third mounting groove;

the shell A is opposite to the end face of one end of the shell B, and a circular rack is further arranged on the end face of one end, opposite to the shell B, of the shell A, and the triangular teeth are meshed with the circular rack.

Furthermore, in order to better realize the invention, the shell A is also provided with three weight reading scales, and the three weight reading scales correspond to the weights of one dumbbell piece, two dumbbell pieces and three dumbbell pieces which are arranged at the end part of the telescopic threaded pipe respectively.

Furthermore, in order to better realize the invention, the outer sleeve is also sleeved with a silica gel sleeve, and the silica gel sleeve is connected to the outer sleeve in a bonding mode.

Furthermore, in order to better realize the invention, the fastening structure comprises a buckle block and a buckle groove, the buckle block is of an L-shaped structure and is arranged at the edge of the dumbbell piece, one edge of the L-shaped structure is along the axial direction of the dumbbell piece, the other edge of the L-shaped structure is along the radial direction of the dumbbell piece and faces the center of the dumbbell piece, and the buckle groove is a groove matched with the buckle block.

Furthermore, in order to better realize the invention, the support comprises an A tube, a B tube, an A plate, a B plate, a C plate and a D plate, the A tube and the B tube are arranged in parallel and at intervals, the A plate, the B plate, the C plate and the D plate are also arranged in parallel and sequentially at intervals, the A tube and the B tube are connected to the A plate, the B plate, the C plate and the D plate in a penetrating manner, the A plate and the B plate are arranged at one ends of the A tube and the B tube and form a first sleeving assembly, the C plate and the D plate are arranged at the other ends of the A tube and the B tube and form a second sleeving assembly, three dumbbell pieces at one end of the holding rod are inserted into the first sleeving assembly, three dumbbell pieces at the other end of the holding rod are inserted into the second sleeving assembly, and the lug blocks are arranged on the B plate and the C plate.

Furthermore, in order to better realize the dumbbell rack, upward bayonets are arranged on the plate A and the plate D, clamping blocks are arranged on the dumbbell blocks on the outer side, and the clamping blocks are clamped in the bayonets to position and limit the dumbbell blocks on the outer side.

Compared with the prior art, the invention has the following beneficial effects:

the dumbbell provided by the invention comprises a dumbbell main body and a support, wherein the dumbbell main body comprises a holding rod and six dumbbell sheets, one or two or three dumbbell sheets can be respectively arranged at two ends of the holding rod, the holding rod is a telescopic rod, when the holding rod is stretched, the number of the dumbbell sheets arranged at one end of the holding rod is changed, the dumbbell sheets not arranged on the holding rod are placed on the support, and by adopting the structure, the holding rod is a telescopic rod, and a user can selectively arrange one or two or three dumbbell sheets at the end part of the holding rod only by driving the holding rod to stretch, so that the weight of the whole dumbbell main body can be conveniently adjusted, a complicated knob is not needed, the operation is simple and convenient, the user can place more time and energy on body building, and the training feeling of the user is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the structure of a dumbbell of the present invention;

FIG. 2 is a schematic view of the structure of the stand of the present invention;

FIG. 3 is a schematic view of the structure of the grip of the present invention;

FIG. 4 is a cross-sectional view of the structure shown in FIG. 3;

FIG. 5 is a schematic structural view of the grip of the present invention with a side stop assembly mounted at each end;

FIG. 6 is a schematic view of the structure of FIG. 3 without the outer sleeve;

FIG. 7 is a schematic view showing the internal structure of the case B of the present invention;

FIG. 8 is a schematic view showing the internal structure of the A case in the present invention;

FIG. 9 is a schematic structural view of the A case in the present invention;

FIG. 10 is a schematic view of the construction of the inner dumbbell sheet of the present invention;

FIG. 11 is another perspective view of the structure shown in FIG. 10;

FIG. 12 is a schematic view of the construction of an intermediate dumbbell sheet in accordance with the present invention;

FIG. 13 is another perspective view of the structure shown in FIG. 12;

FIG. 14 is a schematic view of the construction of the outer dumbbell sheet in the present invention;

fig. 15 is another perspective view of the structure shown in fig. 14.

In the figure:

1-an inner dumbbell sheet; 1001-slider; 1002-a dovetail key;

2-a middle dumbbell sheet;

3-outer dumbbell sheet; 31-cartridge

4-a screw rod;

5-rotating the head;

6-outer sleeve; 61-key slot; 62-a clamp spring groove;

7-pins;

8-telescopic threaded pipes; 81-straight groove;

9-silica gel sleeve;

10-A shell; 101-flat bond; 102-a circular ring; 1021-a gap; 103-circular groove; 104-a convex ring; 105-circular rack; 106-weight reading scale;

11-B shell; 111-a first mounting groove; 1111-passage port; 112-a second mounting groove; 113-a third mounting groove;

a 12-A tube;

13-B tube;

14-a plate;

15-B plate;

a 16-C plate;

17-D plate;

18-bayonet;

19-a fastening block;

20-catching grooves;

21-a first telescoping block; 211-passing through the groove;

22-a first spring;

23-a positioning bead;

24-a triangular tooth block;

25-a second spring;

26-bump.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

Example 1:

the present embodiment provides a dumbbell including a dumbbell main body and a holder, and the dumbbell main body is generally placed on the holder and lifted from the holder when the dumbbell main body is used for exercise. The dumbbell main body comprises dumbbell pieces and a holding rod, the holding rod is a straight rod, the number of the dumbbell pieces is at least four, one or two or more dumbbell pieces are respectively arranged at two ends of the holding rod, the dumbbell pieces can be naturally not arranged, the holding rod is only used for exercising, and the weight of each dumbbell piece is 2.5 KG. The holding rod is a telescopic rod, when the telescopic rod is telescopic, the quantity of the dumbbell pieces arranged at the two ends of the holding rod is changed, and the dumbbell pieces which are not arranged on the holding rod are placed on the support.

Adopt this structure, the user can select to adorn a slice or two or the this dumbbell piece of multichip at holding rod every end as required, and when wanting to change weight, only need control the telescopic link flexible can, do not need loaded down with trivial details knob or the operation of dismantling the nut, weight adjustment is easy and simple to handle to the user spends more time and energy on body-building, improves user's training impression.

Example 2:

this implementation is as a concrete implementation mode of embodiment 1, the holding rod in this embodiment includes rotating part and flexible screwed pipe 8, rotating part includes lead screw 4, rotating head 5 and outer tube 6, both ends are equipped with this lead screw 4 respectively about rotating head 5, this rotating head 5 can drive lead screw 4 and rotate, the spiro union has this flexible screwed pipe 8 on every lead screw 4 respectively, and above-mentioned outer tube 6 rotates and cup joints outside above-mentioned flexible screwed pipe 8, lead screw 4 and rotating head 5, and through the pin joint of pin 7 between this outer tube 6 and the rotating head 5, when rotating outer tube 6, rotating head 5 and lead screw 4 will follow and rotate.

In order to avoid the rotation of the telescopic threaded pipe 8 along with the outer sleeve 6, a side stop assembly is respectively installed at the left end and the right end of the outer sleeve 6 in the embodiment, the side stop assembly comprises an A shell 10 and a B shell 11 which are buckled together and can rotate mutually, a through hole A and a through hole B which are just opposite to and communicated with each other are respectively arranged at the central positions of the A shell 10 and the B shell 11, the end part of the outer sleeve 6 is inserted in the through hole A and the through hole B, the A shell 10 is positioned at a position far away from the end part of the outer sleeve 6, the B shell 11 is positioned at a position close to the end part of the outer sleeve 6, a key groove 61 is arranged at the end part of the outer sleeve 6, a flat key 101 is arranged on the inner wall of the through hole A of the A shell 10, the flat key 101 is keyed in the key groove 61 and the flat key 101 abuts against the groove wall of one end part, far away from the end part of the outer, the snap spring groove 62 is provided with a snap spring, when the B housing 11 is also inserted on the outer sleeve 6 and covers the a housing 10, the snap spring presses the B housing 11 on the a housing 10 to cooperate with the flat key 101 to limit the axial displacement of the B housing 11 and the a housing 12. In this embodiment, each end of the grip lever is provided with three dumbbell pieces and can be detachably fastened with each other through a fastening structure, the dumbbell pieces are respectively an inner dumbbell piece 1 close to the rotating head 5, an outer dumbbell piece 3 far away from the rotating head 5 and an intermediate dumbbell piece 2 located between the inner dumbbell piece 1 and the outer dumbbell piece 3, the middle portions of the inner dumbbell piece 1, the outer dumbbell piece 3 and the intermediate dumbbell piece 2 are provided with through holes for penetrating the telescopic threaded tube 8, when the telescopic threaded tube 8 is only penetrated and connected in the through hole of the inner dumbbell piece 1, each end of the grip lever is provided with only one dumbbell piece, when the telescopic threaded tube 8 is penetrated and connected in the through hole of the intermediate dumbbell piece 2, each end of the grip lever is provided with two dumbbell pieces, and when the telescopic threaded tube 8 is penetrated and connected in the through hole of the outer dumbbell piece 3, each end of the grip lever is provided with three dumbbell pieces. Be equipped with straight flute 81 along its axial on the outer wall of flexible screwed pipe 8, be equipped with slider 1001 on the through hole inner wall of inboard dumbbell piece 1, slider 1001 slides and pegs graft in straight flute 81 and this slider 1001 and straight flute 81 width adaptation, can dismantle fixed connection through the screw between inboard dumbbell piece 1 and the B casing 11, at this moment, B casing 11 links together with inboard dumbbell piece 1 and flexible screwed pipe 8, when B casing 11 can not rotate, above-mentioned flexible screwed pipe 8 also can not rotate. Be equipped with lug 26 on above-mentioned support, be equipped with the notch on the B casing 11, when the dumbbell main part was placed on the support, above-mentioned lug 26 inserted in above-mentioned notch, limiting displacement between lug 26 and the notch lateral wall for support and B casing 11 are even as an organic whole, because the subaerial and can not rotate of support installation, so the B casing 11 can not rotate this moment, therefore inboard dumbbell piece 1 and flexible threaded shaft 8 can not rotate.

The outer sleeve 6, the rotary head 5, the lead screw 4 and the A shell 10 can rotate, and when the lead screw 4 rotates, the telescopic threaded pipe 8 screwed with the lead screw can only linearly extend towards the left side and the right side. When the dumbbell rack is used, a user holds the outer sleeve 6 to exercise, and when the dumbbell main body is placed on the support, the user twists the outer sleeve 6 to drive the telescopic threaded pipe 8 to stretch and jack different quantities of dumbbell pieces.

All the dumbbell pieces are provided with the middle holes instead of the through notches, the dumbbell pieces do not generate centrifugal force when being used, centrifugal deviation cannot be caused due to the notches during training, the center of gravity of each angle moves in the middle, and the angle of each dumbbell piece cannot be estimated by wasting redundant time.

In addition, a joggle key 1002 is provided on the inner wall of the through hole of the inner dumbbell plate 1, and the joggle key 1002 is keyed in the key groove 61 to abut against the flat key 101.

Of course, four or five or more dumbbell plates may be mounted at each end of the grip.

Example 3:

in this embodiment, a further improvement is made on the basis of embodiment 2, in this embodiment, a first mounting groove 111 is radially provided on an end surface of the B shell 11 facing the a shell 10, a groove wall opening of the first mounting groove 111 near the edge of the B shell 10 forms the above-mentioned notch, and the protrusion 26 on the support can be inserted into the notch and the first mounting groove 111. A first expansion block 21 and a first spring 22 are mounted in the first mounting groove 111, the first spring 22 is abutted between the first expansion block 21 and the groove wall of the first mounting groove 111, the axial direction of the first spring 22 is the radial direction of the B housing 11, and the first expansion block 21 can linearly move in the first mounting groove 111 in the radial direction of the B housing 11.

The first expansion block 21 is provided with a through groove 211, the wall of the first mounting groove 111 is provided with a through opening 1111, the end surface of the shell a 10 close to the shell B11 is provided with a circular ring 102 coaxial with the through hole a, the circular ring 102 is provided with a plurality of notches 1021, and the width of the notches 1021 is the same as the width of the first expansion block 21.

When the dumbbell main body is placed on the support, the lug 26 is inserted into the notch, the lug 26 abuts against the first telescopic block 21, at this time, the through slot 211 is communicated with the through hole 1111, and if the outer sleeve 6 and the A shell 10 are rotated to extend and retract the holding rod, the circular ring 102 passes through the through slot 211 and the through hole 1111; and when the dumbbell main body is not put on the support, the lug 26 is not inserted into the notch and does not prop against the first telescopic block 21, at this moment, the first telescopic block 21 extends out and props against the edge of the B shell 11, the groove 211 is staggered with the through opening 1111, the first telescopic block 21 is inserted in the notch 1021 of the ring 102 of the A shell 10, at this moment, the first telescopic block 21 blocks the ring 102, so that the ring 102 cannot rotate, the A shell 10, the outer sleeve 6, the rotating head 5 and the screw rod 4 cannot rotate, and at this moment, the telescopic threaded pipe 8 cannot stretch out and draw back.

Adopt this kind of structure, only when the user puts the dumbbell main part on the support, just can rotate outer tube 6 and drive flexible screwed pipe 8 flexible to the quantity of the dumbbell piece that the flexible screwed pipe 8 of change can be picked up, and when the user when using this dumbbell main part training, above-mentioned outer tube 6 can not rotate, and flexible screwed pipe 8 can not stretch out and draw back, reaches the auto-lock, can not drop from the holding rod in order to guarantee the dumbbell piece, guarantees safety.

Example 4:

in this embodiment, a further improvement is made on the basis of embodiment 3, in this embodiment, a second mounting groove 112 is further provided on an end surface of the B housing 11 facing the a housing 10 along the axial direction thereof, a positioning ball 23 is mounted in the second mounting groove 112, the positioning ball 23 is a conventional art, and therefore detailed description thereof is omitted here, a circular groove 103 and a convex ring 104 that is connected to the circular groove 103 and has the same height as the circular groove 103 are provided on the end surface of the a housing 10 facing the B housing 11, when the a housing 10 rotates relative to the B housing 11, the ball of the positioning ball 23 rolls on the convex ring 104 and the groove opening of the circular groove 103, when the telescopic threaded pipe 8 is telescopically inserted into one or two or three dumbbell pieces of the three dumbbell pieces, the ball of the positioning ball 23 falls into the circular groove 103, so as to remind a user that the outer sleeve 6 rotates in place and the telescopic threaded pipe 8 is telescopic in place, thereby preventing the telescopic threaded pipe 8 from not telescoping in, the safety is ensured. It is noted that the number of the positioning beads installed between the a case 10 and the B case 11 is two, and the number of the circular grooves 103 is plural, and a plurality of the circular grooves 103 are uniformly distributed in the a case 10. And the positioning bead 23 makes a slight click when entering the circular groove 103 to alert the user.

Example 5:

in this embodiment, a further improvement is made on the basis of embodiment 4, in this embodiment, a third mounting groove 113 is further provided on an end surface of the B housing 11 facing the a housing 10, a triangular tooth block 24 and a second spring 25 are mounted in the third mounting groove 113, an axial direction of the second spring 25 is the same as an axial direction of the B housing 11, the second spring 25 abuts between a bottom of the third mounting groove 113 and the triangular tooth block 24, at this time, the triangular tooth block 24 can move in and out of the third mounting groove 113, and a triangular tooth is provided on an end of the triangular tooth block 24 away from the second spring 25, and the triangular tooth can extend out of the third mounting groove 113. An end face of the shell A10, which faces the shell B11, is provided with a circular rack 105, and the triangular teeth are meshed with the circular rack 105. When the a-housing 10 is rotated relative to the B-housing 11, that is, when the user rotates the outer tube 6 to drive the telescopic screw tube 8 to be contracted and contracted, the triangular teeth are engaged and moved on the circular rack 105, and thus, a click sound is generated.

Example 6:

in this embodiment, a further improvement is made on the basis of embodiment 5, in this embodiment, the a shell 10 is further provided with three weight reading scales 106, the three weight reading scales 106 correspond to weights of one dumbbell piece, two dumbbell pieces, and three dumbbell pieces mounted on the end portion of the telescopic threaded pipe 8, the B shell 11 is provided with a viewing port, and when the a shell 10 rotates to correspond to one dumbbell piece, two dumbbell pieces, and three dumbbell pieces, the three weight reading scales 106 rotate to the viewing port, respectively, so that a user can view the scales.

Example 7:

in order to improve user's use comfort, still overlap on outer tube 6 in this embodiment and have silica gel cover 9 and connect through the mode of bonding, like this, the user directly holds on silica gel cover 9, feels better to can drive outer tube 6 and rotate together when silica gel cover 9 rotates, to the women, silica gel cover 9 can better protect the palm, places the hand and holds the holding rod for a long time and appear the callosity.

Example 8:

as a specific implementation manner of embodiment 2, the fastening structure in this embodiment includes a fastening block 19 and a fastening groove 20, the fastening block 19 is an L-shaped structure and is disposed at an edge of the dumbbell sheet, one edge of the L-shaped structure is along an axial direction of the dumbbell sheet, the other edge of the L-shaped structure is along a radial direction of the dumbbell sheet and faces a center of the dumbbell sheet, and the fastening groove 20 is a groove adapted to the fastening block 19.

Specifically, the upper edge of the inner dumbbell sheet 1 is provided with the buckling block 19 and faces the middle dumbbell sheet 2, the lower edge of the inner dumbbell sheet 1 is provided with the buckling groove 20 at one side close to the middle dumbbell sheet 2, the upper edge of the middle dumbbell sheet 2 at one side close to the inner dumbbell sheet 1 is provided with the buckling groove 20 for being connected with the buckling block 19 at the upper edge of the inner dumbbell sheet 1, and the lower edge of the middle dumbbell sheet 2 at one side close to the inner dumbbell sheet 1 is provided with the buckling block 19 for being connected with the buckling groove 20 at the lower edge of the inner dumbbell sheet 1; the edge of one side upper portion that middle dumbbell piece 2 is close to outside dumbbell piece 3 is equipped with one should detain piece 19, the edge of one side lower part that middle dumbbell piece 2 is close to outside dumbbell piece 3 is equipped with one should detain the groove 20, one side upper portion edge that outside dumbbell piece 3 is close to middle dumbbell piece 2 is equipped with one should detain the groove 20, be used for meeting with the knot piece 19 that middle dumbbell piece 2 is close to outside dumbbell piece 3 upper portion edge, one side lower part edge that outside dumbbell piece 3 is close to middle dumbbell piece 2 is equipped with one should detain piece 19, be used for meeting with the catching groove 20 that middle dumbbell piece 2 is close to one side lower part edge of outside dumbbell piece 3.

Adopt this kind of structure, all carry out the lock joint through two lock joint structure one on the other between the adjacent dumbbell piece for adjacent dumbbell piece not only can not take place the axial and drop when the lock joint is in the same place, also can not take place radially and drop, no matter what kind of posture the user adopts takes exercise, and the dumbbell piece that meets all can not drop, further guarantees safety.

Example 9:

this embodiment is a specific implementation of the above embodiment, in which the support comprises a tube 12, a tube 13, a14, a plate 15, a plate 16 and a plate 17, the tube 12 and the tube 13 are parallel and spaced apart, the plate 14, the plate 15, the plate 16 and the plate 17 are also parallel and spaced apart in sequence, the tube 12 and the tube 13 are threaded on the plate 14, the plate 15, the plate 16 and the plate 17, the plate 14 and the plate 15 are arranged at one end of the tube 12 and the tube 13 and form a first nesting assembly, the plate 16 and the plate 17 are arranged at the other end of the tube 12 and the tube 13 and form a second nesting assembly, three dumbbell pieces at one end of the grip are inserted in the first nesting assembly, and three dumbbell pieces at the other end of the grip are inserted in the second nesting assembly, so that the support can hold dumbbell bodies when not tightly, and place dumbbell bodies on the support, avoid the contact of dumbbell main part and ground. And the above-mentioned projection 26 is provided on the upper ends of the B plate 15 and the C plate 16.

Further, all be equipped with bayonet socket 18 up on A board 14 and the D board 17 in this embodiment, one side central point that keeps away from middle dumbbell piece 2 on the dumbbell piece 3 in the outside puts and is equipped with fixture block 31, fixture block 31 card is in order to fix a position and spacing to dumbbell piece 3 in the bayonet socket 18, and bayonet socket 48's edge sets up vertical arch, fixture block 31 edge is equipped with the notch, when fixture block 31 card is in bayonet socket 18, the arch is inserted in the notch, thus, can make outside dumbbell piece 3 can only mention up, and can not rotate and axial displacement and back-and-forth movement, make outside dumbbell piece 3 place on the support firmly.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A dumbbell, characterized in that: the dumbbell comprises a dumbbell main body and a support, wherein the dumbbell main body comprises at least four dumbbell sheets and a holding rod, one or two or more dumbbell sheets are respectively arranged at two ends of the holding rod, the holding rod is a telescopic rod, when the holding rod is telescopic, the number of the dumbbell sheets arranged at the two ends of the holding rod is changed, and the dumbbell sheets which are not arranged on the holding rod are placed on the support;

the holding rod comprises a rotating part and a telescopic threaded pipe, the rotating part comprises screw rods, a rotating head and an outer sleeve, the left end and the right end of the rotating head are respectively provided with one screw rod, each screw rod is respectively screwed with one telescopic threaded pipe, the outer sleeve is rotatably sleeved outside the telescopic threaded pipe, the screw rods and the rotating head, and the outer sleeve is in pin joint with the rotating head through pins;

2. A dumbbell according to claim 1, characterized in that: a first mounting groove is formed in the end face of one end, opposite to the shell A, of the shell B along the radial direction of the shell B, the opening of the side wall, close to the edge of the shell B, of the first mounting groove forms a notch, a first telescopic block is mounted in the first mounting groove, the first spring is abutted between the first telescopic block and the wall of the first mounting groove, and the axial direction of the first spring is the radial direction of the shell B;

3. A dumbbell according to claim 2, characterized in that: the utility model discloses a dumbbell piece, including a shell, a B casing, a protruding ring, a telescopic threaded pipe, a locating ball, a first mounting groove, a second mounting groove, a locating ball, a circular groove outer wall, a bulge loop, a round groove notch, a round groove outer wall, a groove, a groove, a groove, a groove.

4. A dumbbell according to claim 3, characterized in that: a third mounting groove is further formed in the end face, opposite to the shell A, of the shell B, a triangular tooth block is mounted in the third mounting groove, the third mounting groove further comprises a second spring axially in the same direction as the shell B, one end of the second spring abuts against the bottom of the third mounting groove, the other end of the second spring abuts against one end, close to the bottom of the third mounting groove, of the triangular tooth block, and triangular teeth are arranged at one end, far away from the bottom of the third mounting groove, of the triangular tooth block and extend out of the third mounting groove;

5. A dumbbell according to claim 4, characterized in that: the shell A is also provided with three weight reading scales, and the three weight reading scales correspond to the weights of the end part of the telescopic threaded pipe with one dumbbell piece, two dumbbell pieces and three dumbbell pieces respectively.

6. A dumbbell according to claim 5, characterized in that: the outer sleeve is further sleeved with a silica gel sleeve, and the silica gel sleeve is connected to the outer sleeve in a bonding mode.

7. A dumbbell according to any one of claims 1 to 6, characterised in that: the buckling structure comprises a buckling block and a buckling groove, the buckling block is of an L-shaped structure and is arranged at the edge of the dumbbell piece, one edge of the L-shaped structure is in the axial direction of the dumbbell piece, the other edge of the L-shaped structure is in the radial direction of the dumbbell piece and faces the center of the dumbbell piece, and the buckling groove is a groove matched with the buckling block.

8. A dumbbell according to claim 7, characterized in that: the support includes A pipe, B pipe, A board, B board, C board and D board, A pipe with B pipe parallel and interval setting, A board, B board, C board and D board are also parallel and interval setting in proper order, A pipe with B pipe cross-under is in on A board, B board, C board and the D board, A board with the B board sets up the one end of A pipe and B pipe forms first suit subassembly, C board with the D board sets up the other end of A pipe and B pipe forms second suit subassembly, insert three dumbbell pieces of holding rod one end in the first suit subassembly, insert three dumbbell pieces of the holding rod other end in the second suit subassembly, the B board with all be equipped with on the C board the lug.

9. A dumbbell according to claim 8, characterized in that: the dumbbell rack is characterized in that upward bayonets are arranged on the plate A and the plate D, clamping blocks are arranged on the dumbbell blocks on the outer sides, and the clamping blocks are clamped in the bayonets to position and limit the dumbbell blocks on the outer sides.