Dumbbell capable of preventing dumbbell pieces from falling off

Abstract

The utility model relates to a dumbbell capable of preventing dumbbell pieces from falling off, which comprises a dumbbell rod and a plurality of dumbbell pieces, a locking component is arranged on a first side face of each dumbbell piece, a locking buckle is arranged on a second side face of each dumbbell piece, the locking buckles are matched with the locking components, and control components are arranged at two ends of the dumbbell rod. In the combined state, the locking assemblies on the dumbbell pieces lock the locking buckles on the dumbbell pieces adjacent to the dumbbell pieces so as to prevent the two dumbbell pieces from being separated, and the control assembly is used for controlling the locking assemblies to be switched between the locking state and the unlocking state. According to the dumbbell, it can be stably guaranteed that all the dumbbell pieces are in a stable connection state through the locking assemblies and the locking buckles.

Description

Technical Field

[0001] The utility model relates to the technical field of fitness equipment, in particular to a dumbbell capable of preventing dumbbell pieces from falling off. Background Art

[0002] Dumbbells are a common training equipment with a simple structure and little space restriction. Therefore, they are very practical whether in the gym or at home. Dumbbells mainly include a number of dumbbell plates and a dumbbell bar used to combine the dumbbell plates for exercisers. Common dumbbell plates are fixed to both ends of the dumbbell bar by nuts. During long-term use or vibration, the nuts may loosen or even fall off, which can easily cause the dumbbell plates to separate from the dumbbell bar. If the dumbbell plates fall off during use, it is dangerous. The instantaneous weight change may cause muscle strain or direct injury to the exerciser. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the existing dumbbells fixed by screws are easy to fall off due to loosening of the screws due to vibration during long-term use. In view of the above defects of the prior art, a dumbbell with anti-falling dumbbell pieces is provided.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is to construct a dumbbell for preventing dumbbell pieces from falling off, comprising a dumbbell rod and a plurality of dumbbell pieces, the center of each dumbbell piece is provided with a mounting hole matching the dumbbell rod, a locking assembly accommodating cavity is provided on the first side surface of the dumbbell piece, a locking assembly is arranged in the locking assembly accommodating cavity, a locking buckle is provided on the second side surface of the dumbbell piece, the locking buckle matches the locking assembly, control components are provided at both ends of the dumbbell rod, and a notch for accommodating a control part in the control component is opened on the mounting port of each dumbbell; in the combined state, the locking component on the dumbbell piece locks the locking buckle on the dumbbell piece adjacent to the dumbbell piece to prevent the two dumbbell pieces from separating, and the control component is used to control the locking component to switch between a locked state and an unlocked state.

[0005] Preferably, the locking assembly includes a columnar main body, a cylindrical guide column is provided at the upper end of the main body, and a control column is fixedly connected to the lower end, an open slot for accommodating the locking buckle is formed on the cylindrical main body, a locking tongue is fixedly provided on the upper side wall of the slot near the open edge, and the locking tongue is not connected to the lower side wall of the slot to form a channel for the locking buckle to be inserted into or removed from the slot.

[0006] Preferably, the locking assembly accommodating cavity is located on one side of the first side and is open, the top of the locking assembly accommodating cavity is recessed upward to form a first groove, and the bottom is recessed downward to form a second groove; a guide column accommodating cavity is provided at the bottom of the groove perpendicular to the first groove and facing upward, and a control column through hole is provided at the bottom of the groove perpendicular to the second groove and facing downward; the main body of the locking assembly is arranged between the first groove and the second groove, the guide column is located in the guide column accommodating cavity, the control column passes through the control column through hole and extends into the notch, and the locking assembly can move up and down between the first groove and the second groove;.

[0007] Preferably, a first return spring is arranged between the top of the main body and the bottom of the first groove; under the action of the first return spring, the lower end of the main body is always in contact with the bottom of the second groove, and at this time the lower end of the locking tongue is at the notch of the second groove or in the second groove, so as to close the channel for the locking buckle to be inserted into or pulled out of the slot, thereby preventing the locking buckle from being separated from the locking assembly.

[0008] Preferably, both ends of the dumbbell bar are provided with sliding grooves for accommodating the control assembly along the length direction of the dumbbell bar, and the control assembly is slidably disposed in the sliding grooves.

[0009] Preferably, the control component is in the shape of a long strip that matches the slide groove, and the control component has a control surface, on which a plurality of control protrusions are arranged, and a valley bottom is formed between adjacent control protrusions, and a side of the control component away from the control surface is arranged in the slide groove, and the control surface is exposed on the outside of the slide groove; when the dumbbell plate is arranged on the dumbbell rod, the control surface is located in the notch, and during the sliding process of the control component in the slide groove, the lower end of the control column abuts against the control protrusion or is at the valley bottom; when the dumbbell plate needs to be replaced, the control component is pushed so that the lower end of the control column abuts against the control protrusion, the locking component is in an unlocked state, and the locking buckle can be pulled out from the channel for inserting or pulling out the locking buckle from the slot; in the natural state, the lower end of the control column abuts against the valley bottom, and the channel for inserting or pulling out the locking buckle from the slot is closed.

[0010] Preferably, a second return spring is arranged between the end of the slide groove and the end of the control column, and the second return spring is always in a compressed state. The second return spring makes the locking assembly on the dumbbell plate always in the valley position to ensure that the locking assembly is always in a locked state in a natural state.

[0011] The beneficial effects of the present invention are:

[0012] 1. The utility model provides a locking assembly on the first side of the dumbbell plate, and a locking buckle on the second side of the dumbbell plate. The locking assembly can be controlled to lock or release by a control assembly provided on the dumbbell rod, so that the dumbbell is easy and convenient to operate when replacing the dumbbell plate.

[0013] 2. The main body of the locking assembly of the utility model is arranged in the locking assembly accommodating cavity. Under the action of the first return spring, the lower end of the main body is always located in the second groove, and at this time, the lower end of the lock tongue is at the notch of the second groove or in the second groove, so as to close the channel for the locking buckle to be inserted into or pulled out of the slot, thereby preventing the locking buckle from being separated from the locking assembly.

[0014] 3. A plurality of control protrusions are arranged on the control surface of the control assembly of the utility model. The lower end of the control column abuts against the valley bottom in the natural state. The control protrusions on both sides of the valley bottom can prevent the control column from moving axially along the dumbbell rod, thereby preventing the dumbbell from moving axially along the dumbbell rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a three-dimensional diagram of the utility model.

[0017] Figure 2 It is a cross-sectional stereogram of the utility model.

[0018] Figure 3 It is a cross-sectional view of the utility model.

[0019] Figure 4 It is a cross-sectional view of the innermost dumbbell piece of the present invention.

[0020] Figure 5 It is a cross-sectional view of the middle dumbbell piece of the present invention.

[0021] Figure 6 It is a cross-sectional view of the outermost dumbbell piece of the present invention.

[0022] Figure 7 It is a three-dimensional diagram of the locking assembly of the utility model.

[0023] Figure 8 It is a side view of the locking assembly of the utility model.

[0024] Fig. 9 It is a cross-sectional view of the dumbbell bar of the utility model.

[0025] Fig.10 for Figure 2 Enlarged view of part A.

[0026] Fig.11 for Figure 3 Enlarged view of part B. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the following will be described clearly and completely in combination with the technical solution in the embodiments of the utility model. Obviously, the described embodiments are partial embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0028] like Figures 1 to 11 As shown, this embodiment specifically discloses a dumbbell for preventing dumbbell plates from falling off, including a dumbbell bar 10 and a plurality of dumbbell plates 20, wherein the dumbbell plates 20 are symmetrically installed at both ends of the dumbbell bar 10, and the dumbbell bar 10 can maintain a relatively fixed state with the dumbbell plates 20, and can prevent the dumbbell plates 20 from falling off the dumbbell bar 10.

[0029] The dumbbell pieces 20 at each end include an innermost dumbbell piece 201, a plurality of middle dumbbell pieces 202, and an outermost end dumbbell piece 203. In the assembled state, one side of each dumbbell piece 20 close to the end of the dumbbell bar 10 is a first side, and the other side is a second side. The first side is defined as the outer side, and the second side is defined as the inner side. The innermost dumbbell piece 201 and the middle dumbbell piece 202 are provided with a locking assembly 30 on their first side, and the middle dumbbell piece 202 and the outermost end dumbbell piece 203 are provided with a locking buckle 40 matching the locking assembly 30 on their second side. In order to control the locking assembly 30 on the dumbbell piece 20, control assemblies 50 are symmetrically provided at both ends of the dumbbell bar 10. The control assembly 50 can slide back and forth along the axial direction of the dumbbell bar 10 to control the locking assembly 30 to switch between a locked state and an unlocked state. Specifically, in the combined state, the locking assembly 30 on the dumbbell piece locks the locking buckle 40 on the dumbbell piece adjacent to the outer side of the dumbbell piece to prevent the two dumbbell pieces from separating, and the control assembly 50 can also prevent the dumbbell piece 20 in the combined state from sliding off the dumbbell bar 10. The dumbbell pieces 20 on the dumbbell bar 10 are fixedly connected in turn by the above-mentioned connection method. When the dumbbell pieces 20 need to be separated, the locking assembly 30 is unlocked by sliding the control assembly 50, and the locking buckle 40 can be separated from the locking assembly 30, and then the two dumbbell pieces 20 can be separated.

[0030] A mounting hole (201a, 202a, 203a) matching with the dumbbell rod 10 is arranged at the center of each dumbbell plate 20, the mounting holes (201a, 202a, 203a) run through both sides of the dumbbell plate 20, a locking assembly accommodating cavity (201b, 202b) is arranged on the first side of the dumbbell plate 20, a locking assembly 30 is arranged in the locking assembly accommodating cavity (201b, 202b), a locking buckle (202c, 203c) is arranged on the second side of the dumbbell plate 20, the locking buckle (202c, 203c) matches with the locking assembly 30, control assemblies 50 are arranged at both ends of the dumbbell rod 10, and a notch (201d, 202d, 203d) for accommodating a control part in the control assembly is opened on the mounting hole (201a, 202a, 203a) of each dumbbell plate 20.

[0031] In some embodiments, the locking assembly 30 includes a columnar main body 301, a guide column 302 is provided at the upper end of the main body 301, and a control column 303 is fixedly connected to the lower end. An open slot 301a for accommodating the locking buckle is formed on the side wall of the columnar main body 301, and a downwardly extending locking tongue 304 is fixedly provided on the upper side wall of the slot 301a near the open edge. In order to ensure that the locking buckle 40 can be smoothly inserted into the slot 301a, the locking tongue 304 is located in the middle of the locking buckle 40 above the through hole for the locking tongue to pass through, so that when the main body 301 moves downward, the locking tongue 304 can be inserted into the locking buckle 40. There is no connection between the locking tongue 304 and the lower side wall of the slot 301a to form a channel 301b for the locking buckle 40 to be inserted into or pulled out of the slot.

[0032] The locking assembly accommodating cavity (201b, 202b) is open on one side of the first side, the top of the locking assembly accommodating cavity (201b, 202b) is recessed upward to form a first groove (201e, 202e), and the bottom is recessed downward to form a second groove (201f, 202f); a guide column accommodating cavity (201g, 202g) is provided upward at the bottom of the groove perpendicular to the first groove (201e, 202e), and a control column through hole (201h, 202h) is provided downward at the bottom of the groove perpendicular to the second groove (201f, 202f); the main body of the locking assembly 30 is arranged in the first groove (201e, 202e) and the second groove (201f, 202f), the guide column 301 is located in the guide column accommodating cavity (201b, 202b), the control column 303 passes through the control column through hole (201h, 202h) and extends into the notch (201d, 202d), so that the lower end of the control column 303 is in contact with the control component 50, and the locking component 30 can move up and down between the first groove (201e, 202e) and the second groove (201f, 202f), so that during the sliding process of the control component 50, the locking component 30 can make corresponding movements synchronously with the control component 50 in the vertical direction.

[0033] Further, a first return spring 305 is arranged between the top of the main body 301 and the bottom of the first groove (201e, 202e), and the first return spring 305 is sleeved on the guide column 302; under the action of the first return spring 305, the lower end of the main body 301 is always in contact with the bottom of the second groove (201f, 202f), and when the lower end of the main body 301 is at the bottom of the second groove (201f, 202f), the distance between the lower end of the lock tongue 304 and the lower side wall of the slot 301a is less than the thickness of the locking buckle 40 to prevent the locking buckle 40 from being separated from the channel 301b. Of course, in order to avoid the locking buckle 40 from being separated from the lock tongue 304 due to the bending deformation of the lock tongue 304, it is preferred that the lower end of the lock tongue 304 is at the notch of the second groove (201f, 202f) or in the second groove (201f, 202f) to completely close the channel 301b and prevent the locking buckle 40 from being separated from the locking assembly 30.

[0034] In this embodiment, both ends of the dumbbell bar 10 are provided with slide grooves 101 along the length direction of the dumbbell bar 10 for accommodating the control assembly 50 , and the control assembly 40 is slidably disposed in the slide grooves 101 .

[0035] Specifically, the control assembly 50 is in the shape of a strip that matches the chute 101, and the control assembly 50 has a control surface, on which a plurality of control protrusions 501 are arranged, and between adjacent control protrusions 501 is a valley bottom 502. When the control assembly 50 is arranged in the chute 101, the side of the control assembly 50 away from the control surface contacts the bottom of the chute 101, and the control surface is exposed outside the chute 101; when the dumbbell plate 20 is arranged on the dumbbell bar 10, the control surface is located in the notch (201d, 202d, 203d), and the lower end of the control column 303 in the locking assembly 30 abuts against the protrusion 501 or the valley bottom 502 on the upper side of the control surface. Specifically, when the dumbbell plates 20 are in a locked state, the lower end of the control column 303 in the locking assembly 30 abuts against the valley bottom 502 on the upper side of the control surface. When the dumbbell plate needs to be unlocked and replaced, the control assembly 50 slides in the slide groove 101, so that the lower end of the control column 303 abuts against the control protrusion 501. That is, when the dumbbell plate needs to be replaced, the control assembly 50 is pushed, so that the lower end of the control column 303 abuts against the control protrusion 501, the locking assembly 30 is in the unlocked state, and the locking buckle 40 can be pulled out from the channel 301 for inserting or pulling out the locking buckle; in the natural state, the lower end of the control column 303 abuts against the valley bottom 502, and the channel 301b for inserting or pulling out the locking buckle is closed.

[0036] It should be noted that a second return spring 503 is provided between the end of the slide slot 101 and the end of the control assembly 50. The second return spring 503 is always in a compressed state. The second return spring 503 makes the locking assembly 30 on the dumbbell plate always in the valley 502 position to ensure that the locking assembly 30 is always in a locked state in a natural state. In order to ensure that the second return spring 503 is stably provided between the end of the slide slot 101 and the end of the control column 303, a stabilizing rod 101a is provided at the end of the slide slot 101. The second return spring 503 is sleeved on the stabilizing rod 101a. A blind hole for accommodating the stabilizing rod is provided at the end of the long strip. When the control assembly 50 slides in the slide slot 101, the stabilizing rod 101a slides in the blind hole.

[0037] It should be understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A dumbbell for preventing dumbbell plates from falling off, comprising a dumbbell bar and a plurality of dumbbell plates, wherein the center of each dumbbell plate is provided with a mounting hole matching the dumbbell bar, characterized in that: A locking assembly accommodating cavity is provided on the first side surface of the dumbbell plate, a locking assembly is provided in the locking assembly accommodating cavity, a locking buckle is provided on the second side surface of the dumbbell plate, the locking buckle matches the locking assembly, control components are provided at both ends of the dumbbell rod, and a notch for accommodating a control part in the control assembly is provided on the mounting port of each dumbbell; in the combined state, the locking assembly on the dumbbell plate locks the locking buckle on the dumbbell plate adjacent to the dumbbell plate to prevent the two dumbbell plates from separating, and the control assembly is used to control the locking assembly to switch between a locked state and an unlocked state.

2. A dumbbell for preventing dumbbell pieces from falling off according to claim 1, characterized in that: The locking assembly includes a columnar body, a cylindrical guide column is provided at the upper end of the body, and a control column is fixedly connected to the lower end. An open slot for accommodating a locking buckle is formed on the cylindrical body, and a locking tongue is fixedly provided on the upper side wall of the slot near the open edge. The locking tongue is not connected to the lower side wall of the slot to form a channel for the locking buckle to be inserted into or removed from the slot.

3. A dumbbell for preventing dumbbell pieces from falling off according to claim 2, characterized in that: The locking assembly accommodating cavity is located on one side of the first side and is open, the top of the locking assembly accommodating cavity is recessed upward to form a first groove, and the bottom is recessed downward to form a second groove; a guide column accommodating cavity is provided at the bottom of the groove perpendicular to the first groove and facing upward, and a control column through hole is provided at the bottom of the groove perpendicular to the second groove and facing downward; the main body of the locking assembly is arranged between the first groove and the second groove, the guide column is located in the guide column accommodating cavity, the control column passes through the control column through hole and extends into the notch, and the locking assembly can move up and down between the first groove and the second groove.

4. A dumbbell for preventing dumbbell pieces from falling off according to claim 3, characterized in that: A first return spring is arranged between the top of the main body and the bottom of the first groove; under the action of the first return spring, the lower end of the main body is always in contact with the bottom of the second groove, and at this time the lower end of the locking tongue is at the notch of the second groove or in the second groove, so as to close the channel for the locking buckle to be inserted into or pulled out of the slot, thereby preventing the locking buckle from being separated from the locking assembly.

5. A dumbbell for preventing dumbbell pieces from falling off according to claim 1, characterized in that: Both ends of the dumbbell bar are provided with sliding grooves for accommodating the control component along the length direction of the dumbbell bar, and the control component is slidably arranged in the sliding groove.

6. A dumbbell for preventing dumbbell pieces from falling off according to claim 5, characterized in that: The control component is in the shape of a long strip that matches the slide groove, and the control component has a control surface, on which a plurality of control protrusions are arranged, and a valley bottom is formed between adjacent control protrusions, and a side of the control component away from the control surface is arranged in the slide groove, and the control surface is exposed on the outside of the slide groove; when the dumbbell plate is arranged on the dumbbell rod, the control surface is located in the notch, and during the sliding process of the control component in the slide groove, the lower end of the control column abuts against the control protrusion or is at the valley bottom; when the dumbbell plate needs to be replaced, the control component is pushed so that the lower end of the control column abuts against the control protrusion, the locking component is in an unlocked state, and the locking buckle can be pulled out from the channel for inserting or pulling out the locking buckle into or out of the slot; in the natural state, the lower end of the control column abuts against the valley bottom, and the channel for inserting or pulling out the locking buckle into or out of the slot is closed.

7. A dumbbell for preventing dumbbell pieces from falling off according to claim 6, characterized in that: A second return spring is arranged between the end of the slide groove and the end of the control column. The second return spring is always in a compressed state. The second return spring makes the locking assembly on the dumbbell plate always in the valley position to ensure that the locking assembly is always in a locked state in a natural state.

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