Dumbbell

Abstract

The utility model relates to the technical field of fitness equipment, in particular to a dumbbell which comprises a handle, dumbbell pieces, a base and a sensor. The handle comprises a spindle telescopic assembly, a driving assembly and a handle shell assembly, the spindle telescopic assembly is arranged in the handle shell assembly, and the driving assembly is in power connection with the spindle telescopic assembly. The base is provided with a plurality of clamping grooves used for containing dumbbell pieces and a containing groove used for containing the handle, the center holes are coaxially aligned when the dumbbell pieces are placed in the clamping grooves respectively, and the telescopic part of the main shaft telescopic assembly can sequentially stretch into the center holes of the dumbbell pieces when stretching out of the penetrating hole in the handle shell assembly. The sensor is arranged in the handle shell assembly and is in signal connection with the control module, the control module is in signal connection with the driving assembly, the sensor is used for detecting the telescopic distance of the spindle telescopic assembly, and the control module can control starting and stopping of the driving assembly. The weight of the dumbbell can be automatically adjusted only by sending a control instruction to the control module, and operation is more convenient and labor-saving.

Description

Technical Field

[0001] The present application relates to the technical field of fitness equipment, and more specifically, to a dumbbell. Background Art

[0002] Dumbbells are an auxiliary equipment for weightlifting and fitness exercises. As people's demand for fitness increases, dumbbells, as a relatively simple and commonly used equipment, have become people's first choice for fitness. Dumbbells include a handle and dumbbell plates installed on both sides of the handle. According to different weight requirements, different numbers of dumbbell plates can be installed on the handle.

[0003] The existing dumbbell plates need to be manually disassembled and assembled when replacing the dumbbell plates, which is inconvenient to operate. Utility Model Content

[0004] In order to at least overcome the problems existing in the related art to a certain extent, the purpose of the present application is to provide a dumbbell that can solve the problem of inconvenient manual disassembly and assembly of dumbbell plates in existing dumbbells. The various technical effects that can be produced by the preferred technical solution among the various technical solutions provided in the present application are described in detail below.

[0005] The present application provides a dumbbell, comprising:

[0006] A handle, the handle comprising a spindle telescopic assembly, a drive assembly and a handle housing assembly, the spindle telescopic assembly being arranged inside the handle housing assembly, the drive assembly being in power connection with the spindle telescopic assembly, and the drive assembly being capable of driving the telescopic portion of the spindle telescopic assembly to extend out of a through hole on the handle housing assembly;

[0007] A dumbbell plate, wherein the dumbbell plate is provided with a central hole;

[0008] A base, wherein the base is provided with a plurality of slots for placing the dumbbell pieces and a placement slot for placing the handle, wherein the center holes of the plurality of dumbbell pieces are coaxially aligned when the plurality of dumbbell pieces are placed in the slots respectively, and the telescopic portion of the main shaft telescopic assembly can sequentially extend into the center holes of the plurality of dumbbell pieces when the telescopic portion extends out of the through hole on the handle housing assembly;

[0009] A sensor is arranged in the handle housing assembly, the sensor is connected to the control module signal, the control module is connected to the drive assembly signal, the sensor is used to detect the movement distance of the telescopic part of the main shaft telescopic assembly, and the control module can control the start and stop of the drive assembly.

[0010] Optionally, the handle housing assembly comprises:

[0011] An outer tube body, wherein the main shaft telescopic assembly is arranged in the outer tube body;

[0012] An end shell, one end shell being connected to each end of the outer tube body;

[0013] A cover is arranged on the end shell, and the cover is provided with an extension hole for the telescopic part of the main shaft telescopic assembly to extend out.

[0014] Optionally, the main shaft telescopic assembly includes:

[0015] An inner tube body, the inner tube body is rotatably inserted in the outer tube body;

[0016] A main rotating shaft, fixedly disposed in the inner tube body, with a left stud and a right stud respectively disposed at two ends of the main rotating shaft;

[0017] A left threaded tube, which is sleeved on the left stud and slidably connected to the inner tube body, and the left threaded tube can extend out of the first end of the inner tube body and the extension hole on the cover;

[0018] A right threaded tube is sleeved on the right stud and slidably connected to the inner tube body. The right threaded tube can extend out of the second end of the inner tube body and the extension hole on the cover.

[0019] Optionally, the main shaft telescopic assembly further includes:

[0020] The two sleeves can be slidably inserted into the inner tube body, and the two sleeves are respectively sleeved on the left threaded tube and the right threaded tube; the left upper half threaded tube and the left lower half threaded tube are spliced ​​to form the left threaded tube, and the right upper half threaded tube and the right lower half threaded tube are spliced ​​to form the right threaded tube.

[0021] Optionally, the driving assembly comprises:

[0022] A main bracket, fixedly disposed in the end shell;

[0023] A driving motor, fixedly arranged on the main support;

[0024] A driving gear, the driving gear being connected to the driving motor in power;

[0025] A transmission gear is sleeved on the inner tube body, the transmission gear is meshed with the driving gear, and the transmission gear is dynamically connected to the inner tube body.

[0026] Optionally, the drive assembly also includes: an inner tooth outer ring and a driven gear, the inner tooth outer ring and the driven gear are respectively rotatably connected to the main bracket, the driven gear is respectively meshed with the inner tooth outer ring and the transmission gear, a plurality of baffles are arranged on the inner tooth outer ring, the sensor is a photoelectric sensor and is arranged along the radial direction of the inner tooth outer ring, and the baffles can block the photoelectric sensor.

[0027] Optionally, contacts are provided on the end shell, a circuit board is provided in the end shell, the photoelectric sensor is provided on the circuit board, the drive motor is electrically connected to the circuit board, the contacts are electrically connected to the circuit board, a probe circuit board and a main circuit board electrically connected to the probe circuit board are provided in the placement slot on the base, the control module is integrated on the main circuit board, and when the handle is placed in the placement slot, the probe circuit board contacts and is electrically connected.

[0028] Optionally, a display screen is provided on the base, and the display screen is connected to the main circuit board.

[0029] Optionally, a “+” button and a “-” button are provided on the base, and the “+” button and the “-” button are respectively connected to the main circuit board.

[0030] Optionally, the dumbbell plate includes: a dumbbell plate body, a first connecting part connected to the first end surface of the dumbbell plate body, and a second connecting part connected to the second end surface of the dumbbell plate body, the first connecting part is provided with a dovetail groove, the second connecting part is provided with a dovetail protrusion that can be inserted into the dovetail groove, and the handle shell assembly is provided with the dovetail groove.

[0031] The technical solution provided by this application may have the following beneficial effects:

[0032] This specific embodiment provides a dumbbell, including a handle, dumbbell pieces, a base and a sensor. A placement slot and a card slot are provided on the base, and a plurality of card slots are provided on both sides of the placement slot. A center hole is provided on the dumbbell piece, and after a plurality of dumbbell pieces are placed in the card slots one by one, the plurality of dumbbell pieces are arranged in sequence, and the center holes of the plurality of dumbbell pieces are coaxially arranged. After the handle is placed in the placement slot, the plurality of dumbbell pieces are symmetrically located on both sides of the handle. The handle includes a main shaft telescopic assembly, a driving assembly and a handle housing assembly. The main shaft telescopic assembly and the driving assembly are arranged in the handle housing assembly. The driving assembly is connected to the main shaft telescopic assembly by power. The sensor is arranged in the handle housing assembly, the sensor is connected to the control module signal, the control module is connected to the driving assembly signal, the sensor is used to detect the moving distance of the telescopic part of the main shaft telescopic assembly, and the control module can control the start and stop of the driving assembly. The control module drives the driving assembly to start and drives the telescopic part of the main shaft telescopic assembly to telescope. When the sensor detects that the telescopic part of the main shaft telescopic assembly moves a certain distance, it sends a signal to the control module, and the control module controls the driving assembly to close. After placing the handle in the placement slot, send instructions to the control module according to the weight requirement, so that the control module controls the drive component to start, and sets the preset distance. The drive component drives the telescopic part of the main shaft telescopic component to extend and extend out of the perforation on the handle shell component and insert into the center hole of the dumbbell piece in turn. The sensor monitors the moving distance of the telescopic part of the main shaft telescopic component in real time. When the moving distance is the preset distance, the sensor sends a signal to the control module, and the control module controls the drive drive component to close. At this time, the telescopic part of the main shaft telescopic component is inserted into the center holes of several dumbbell pieces in turn to meet the weight requirement. At this time, hold the handle and apply force to leave the placement slot, and several dumbbell pieces are sleeved on the telescopic part of the main shaft telescopic component and are lifted out together with the handle shell component. In this way, the weight of the dumbbell can be automatically adjusted by simply sending a control instruction to the control module, which is more convenient and labor-saving to operate.

[0033] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0035] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the 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 paying creative work.

[0036] Figure 1 is a schematic diagram of the overall structure of a dumbbell according to some exemplary embodiments;

[0037] Figure 2 is an exploded schematic diagram of a handle housing assembly according to some exemplary embodiments;

[0038] Figure 3 is an exploded schematic diagram of a main shaft telescopic assembly according to some exemplary embodiments;

[0039] Figure 4 is an exploded schematic diagram of a drive assembly according to some exemplary embodiments;

[0040] Figure 5 is an exploded schematic diagram of a handle according to some exemplary embodiments;

[0041] Figure 6 is an exploded schematic diagram of a base according to some exemplary embodiments;

[0042] Figure 7 is a schematic cross-sectional view of a dumbbell according to some exemplary embodiments;

[0043] Figure 8 is an exploded schematic diagram of a dumbbell plate according to some exemplary embodiments;

[0044] Fig. 9 is a schematic cross-sectional view of a dumbbell plate according to some exemplary embodiments.

[0045] In the figure: 1000, handle; 1100, main shaft extension assembly; 1101, inner tube; 1102, sleeve; 1103, upper left half threaded tube; 1104, lower left half threaded tube; 1105, upper right half threaded tube; 1106, lower right half threaded tube; 1107, earless retaining ring; 1108, support bearing; 1109, bearing end cover; 1110, main shaft; 1200, drive assembly; 1201, inner gear outer ring; 1202, driving gear; 1203, driven gear; 1204, transmission gear; 1205, main bracket; 1206, drive motor; 1207, motor cover; 1300, handle housing assembly; 1301, outer tube ; 1302, end shell; 1303, decorative ring; 1304, contact ring; 1305, fixing nut; 1306, bearing bracket; 1307, cover; 1308, bottom cover; 2000, dumbbell plate; 2001, dumbbell plate body; 2002, first connecting part; 2003, second connecting part; 3000, base; 3001, upper cover; 3002, bottom shell; 3003, display bracket; 3004, base counterweight; 3005, display lens; 4001, handle circuit board; 4002, handle reset circuit board; 4003, contact; 4004, display circuit board; 4005, probe circuit board; 4006, display screen. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0047] The following is an explanation of the embodiments with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the contents of the utility model described in the claims. In addition, the entire contents of the structures represented by the following embodiments are not limited to the solutions required as the utility model described in the claims.

[0048] refer to Figure 1-9 The present embodiment provides a dumbbell, a handle 1000, a dumbbell plate 2000, a base 3000 and a sensor. A placement slot and a card slot are provided on the base 3000, and a plurality of card slots are provided on both sides of the placement slot. A central hole is provided on the dumbbell plate 2000, and after a plurality of dumbbell plates 2000 are placed into the card slots one by one, the plurality of dumbbell plates 2000 are arranged in sequence, and at this time, the central holes of the plurality of dumbbell plates 2000 are coaxially arranged.

[0049] After the handle 1000 is placed in the placement groove, a plurality of dumbbell plates 2000 are symmetrically located on both sides of the handle 1000 .

[0050] The handle 1000 includes a main shaft telescopic assembly 1100, a driving assembly 1200 and a handle housing assembly 1300. The main shaft telescopic assembly 1100 and the driving assembly 1200 are arranged in the handle housing assembly 1300. The driving assembly 1200 is connected to the main shaft telescopic assembly 1100 by power. At this time, the driving assembly 1200 can drive the telescopic part of the main shaft telescopic assembly 1100 to telescope. When the telescopic part of the main shaft telescopic assembly 1100 is extended, it extends out of the perforation on the handle housing assembly 1300 and is inserted into the center hole of the dumbbell plate 2000 in sequence.

[0051] The sensor is arranged in the handle housing assembly 1300, and the sensor is connected to the control module signal, and the control module is connected to the drive assembly 1200 signal. The sensor is used to detect the moving distance of the telescopic part of the main shaft telescopic assembly 1100, and the control module can control the start and stop of the drive assembly 1200. The control module drives the drive assembly 1200 to start and drive the telescopic part of the main shaft telescopic assembly 1100 to telescope. When the sensor detects that the telescopic part of the main shaft telescopic assembly 1100 moves a certain distance, it sends a signal to the control module, and the control module controls the drive assembly 1200 to close.

[0052] After the handle 1000 is placed in the placement slot, an instruction is sent to the control module according to the weight requirement, so that the control module controls the drive assembly 1200 to start, and sets the preset distance. The drive assembly 1200 drives the telescopic part of the main shaft telescopic assembly 1100 to extend and extend out of the perforation on the handle housing assembly 1300 and insert into the center hole of the dumbbell piece 2000 in sequence. The sensor monitors the moving distance of the telescopic part of the main shaft telescopic assembly 1100 in real time. When the moving distance is the preset distance, the sensor sends a signal to the control module, and the control module controls the drive assembly 1200 to close. At this time, the telescopic part of the main shaft telescopic assembly 1100 is inserted into the center hole of several dumbbell pieces 2000 in sequence to meet the weight requirement. At this time, the handle is held and applied to leave the placement slot, and several dumbbell pieces 2000 are sleeved on the telescopic part of the main shaft telescopic assembly 1100 and are lifted out together with the handle housing assembly 1300.

[0053] When weight reduction is required, the handle 1000 is placed in the placement slot, and the dumbbell pieces 2000 on both sides of the handle 1000 are inserted in the card slots. According to the weight requirement, an instruction is sent to the control module, so that the control module controls the drive assembly 1200 to start, and sets the preset distance. The drive assembly 1200 drives the telescopic part of the main shaft telescopic assembly 1100 to shorten and leave the central hole of the dumbbell piece 2000 in sequence. The sensor monitors the moving distance of the telescopic part of the main shaft telescopic assembly 1100 in real time. When the shortened distance is the preset distance, the sensor sends a signal to the control module, and the control module controls the drive drive assembly 1200 to close. At this time, the telescopic part of the main shaft telescopic assembly 1100 leaves the central hole of several dumbbell pieces 2000 to meet the weight reduction requirement. At this time, the handle is held and applied to leave the placement slot, and the remaining dumbbell pieces 2000 sleeved on the telescopic part of the main shaft telescopic assembly 1100 are lifted out together with the handle housing assembly 1300.

[0054] In this way, the weight of the dumbbells can be automatically adjusted by simply sending a control instruction to the control module, which makes the operation more convenient and labor-saving.

[0055] As an optional implementation, the handle housing assembly 1300 includes: an outer tube 1301 , an end housing 1302 , a decorative ring 1303 , a contact ring 1304 , a fixing nut 1305 , a bearing bracket 1306 , a cover 1307 and a bottom cover 1308 .

[0056] The two ends of the outer tube body 1301 are respectively provided with external threads and U-shaped grooves, and the end shell 1302 is provided with a mounting hole, and a snap-in protrusion is provided on the hole wall of the mounting hole. The two ends of the outer tube body 1301 are respectively inserted into and passed through the mounting holes of an end shell 1302, so that the snap-in protrusion is snapped into the U-shaped groove, and the U-shaped groove and the snap-in protrusion form a clearance fit to prevent rotation between the outer tube body 1301 and the end shell 1302. The two fixing nuts 1305 are respectively screwed on the two ends of the outer tube body 1301, so that the small ends of the two end shells 1302 are respectively fixedly connected to the two ends of the outer tube body 1301.

[0057] A first screw installation position is provided on the end shell 1302, a through hole, a bearing installation position and a screw through hole are provided in the middle of the bearing bracket 1306, and the bearing bracket 1306 is fixed to the first screw installation position by a countersunk screw. A second screw installation position is provided on the other end shell 1302, and another bearing bracket 1306 is fixed to the second screw installation position by a countersunk screw.

[0058] The main shaft telescopic assembly 1100 is installed into the outer tube body 1301 through the hole of the bearing bracket 1306. The two end shells 1302 are sealed and connected to the side away from the outer tube body 1301 with a cover 1307. The cover 1307 is provided with an extension hole. When the telescopic part of the main shaft telescopic assembly 1100 is extended, it can extend out of the outer tube body 1301 and pass through the extension hole on the cover 1307. The bottom cover 1308 is connected to the outer side of the cover 1307.

[0059] The large end cross-section of the end shell 1302 is D-shaped, and the large end outer ring of the end shell 1302 is provided with a step position, and the decorative ring 1303, which is also D-shaped, is fitted on the step position to prevent the decorative ring 1303 from rotating when installed on the end shell 1302.

[0060] The cross section of the contact ring 1304 is also D-shaped. After the decorative ring 1303 is sleeved, the contact ring 1304 is further sleeved, thereby fixing the contact ring on the end shell 1302 .

[0061] As an optional implementation, the main shaft telescopic assembly 1100 includes: an inner tube body 1101 , a main shaft 1110 , a left threaded tube, a right threaded tube, an earless retaining ring 1107 , a support bearing 1108 and a bearing end cover 1109 .

[0062] Both ends of the side wall of the inner tube body 1101 are provided with retaining spring slots, and the earless retaining springs are respectively mounted on the retaining spring slots, and the two support bearings 1108 are respectively sleeved on the two ends of the side wall of the inner tube body 1101, so that the support bearings 1108 are against the earless retaining springs. The two bearing end covers 1109 are respectively mounted on the first screw mounting position and the second screw mounting position using countersunk screws, so that the outer rings of the two support bearings 1108 are respectively fixed on the end shell 1302. In this way, the inner tube body 1101 is rotatably inserted into the outer tube body 1301.

[0063] A left stud and a right stud are respectively provided at both ends of the main shaft 1110, a plug-in hole is opened on the main shaft 1110, and a plug-in through hole is opened on the inner tube body 1101. After the main shaft 1110 is inserted into the inner tube body 1101, the plug-in through hole is coaxially aligned with the plug-in hole, and the clamping column is inserted into the plug-in hole through the plug-in through hole, so that the main shaft 1110 is fixedly set in the inner tube body 1101.

[0064] The left threaded tube is rotatably sleeved on the left stud, and the left threaded tube is slidably connected to the inner tube body 1101. When the left threaded tube rotates, the left threaded tube slides along the inner tube body 1101 to extend and retract. The right threaded tube is rotatably sleeved on the right stud, and the right threaded tube is slidably connected to the inner tube body 1101. When the right threaded tube rotates, the right threaded tube slides along the inner tube body 1101 to extend and retract. At this time, the left threaded tube and the right threaded tube are the telescopic parts of the main shaft telescopic assembly 1100. The left threaded tube can extend out of the first end of the inner tube body 1101 and extend out of the extension hole on the cover 1307, and the right threaded tube can extend out of the second end of the inner tube body 1101 and extend out of the extension hole on the cover 1307.

[0065] In some embodiments, the main shaft telescopic assembly 1100 further includes a sleeve 1102. The inner hole wall of the sleeve 1102 is a special-shaped hole, and a slide groove is provided on the outer wall of the two sleeves 1102. A slide rail is provided on the inner wall of the inner tube body 1101 along the length direction, and the two sleeves 1102 are inserted into the inner tube body 1101 and the slide rail is inserted into the slide groove, so that both sleeves 1102 can be slidably inserted into the inner tube body 1101. The left threaded tube includes a left upper half threaded tube 1103 and a left lower half threaded tube 1104. The left upper half threaded tube 1103 and the left lower half threaded tube 1104 are respectively placed on the upper and lower sides of the left stud and spliced, so that the left threaded tube is rotatably sleeved on the left stud. The right threaded tube includes a right upper half threaded tube 1105 and a right lower half threaded tube 1106, which are respectively placed on the upper and lower sides of the right stud and spliced, so that the right threaded tube is rotatably sleeved on the right stud. The outer walls of the left-threaded tube and the right-threaded tube match the inner hole wall shape of the sleeve 1102, so that after the left-threaded tube is inserted into one sleeve 1102 and the right-threaded tube is inserted into the other sleeve 1102, the rotation of the sleeve 1102 can drive the left-threaded tube and the right-threaded tube to rotate, which is convenient for installation.

[0066] The driving assembly 1200 is connected to the inner tube body 1101 by power, and the driving assembly 1200 drives the inner tube body 1101 to rotate forward and reverse, thereby driving the sleeve 1102 to rotate forward and reverse, thereby driving the left threaded tube and the right threaded tube to rotate forward and reverse, and then the left threaded tube and the right threaded tube and the sleeve 1102 are extended and retracted. The left threaded tube and the right threaded tube and the sleeve 1102 are the telescopic part of the main shaft telescopic assembly 1100.

[0067] As an optional implementation, the driving assembly 1200 includes: a main support 1205 , a driving motor 1206 , a driving gear 1202 and a transmission gear 1204 .

[0068] A countersunk screw hole is provided on the main support 1205 , and after the countersunk screw hole is matched with the third screw position on the end shell 1302 , the main support 1205 is fixed to the end shell 1302 with screws.

[0069] The main bracket 1205 is provided with a motor installation position and a first self-tapping screw installation position. After the drive motor 1206 is placed in the motor installation position, the motor cover 1207 is placed on the motor installation position to fix the drive motor 1206 in the motor installation position. The motor cover 1207 is fixed to the first self-tapping screw installation position by self-tapping screws.

[0070] The rotating hole of the driving gear 1202 is a D-shaped hole, and the cross-section of the motor shaft of the driving motor 1206 is D-shaped. The motor shaft of the driving motor 1206 is inserted into the D-shaped hole of the driving gear 1202 to form an interference fit, so that the driving gear 1202 is connected to the driving motor 1206 in power, and the driving motor 1206 can drive the driving gear 1202 to rotate.

[0071] Two clamping protrusions are arranged on the inner hole wall of the transmission gear 1204, and two U-shaped grooves are arranged at one end of the inner tube body 1101. The transmission gear 1204 is sleeved on one end of the inner tube body 1101 so that the clamping protrusions are clamped into the U-shaped grooves one by one. In this way, the transmission gear 1204 is connected to the inner tube body 1101 by power and drives the inner tube body 1101 to rotate when rotating. The driving gear 1202 is meshed with the transmission gear 1204.

[0072] The drive motor 1206 is connected to the control module signal. The control module controls the drive motor to start, the motor shaft of the drive motor rotates to drive the driving gear 1202 to rotate, the driving gear 1202 drives the transmission gear 1204 to rotate, the transmission gear 1204 drives the inner tube body 1101 to rotate, the inner tube body 1101 drives the sleeve 1102 to rotate, the sleeve 1102 drives the left threaded tube and the right threaded tube to rotate, so that the left threaded tube and the right threaded tube and the sleeve 1102 extend and retract.

[0073] In some embodiments, the driving assembly 1200 further includes: an inner tooth outer ring 1201 and a driven gear 1203. The inner side of the inner tooth outer ring 1201 is provided with teeth and is arranged on the periphery of the driving gear 1202. The inner tooth outer ring 1201 is rotatably connected to the main bracket 1205 so that the inner tooth outer ring 1201 is meshed with the driving gear 1202. Two gear mounting positions are provided on the main bracket 1205. The two driven gears 1203 are rotatably connected to the gear mounting positions on the main bracket 1205 respectively so that the inner tooth outer ring 1201 is meshed with the two driven gears 1203, and the two driven gears 1203 are both meshed with the transmission gear 1204. When the driving gear 1202 rotates, the driven gear 1203 and the inner tooth outer ring 1201 rotate together, providing more stable support for the meshing between the driving gear 1202 and the driven gear 1203.

[0074] Six baffles are arranged on the inner gear outer ring 1201, and the six baffles are evenly arranged along the circumference of the inner gear outer ring 1201. The sensor is a photoelectric sensor, and the photoelectric sensor points to the periphery along the radial direction of the inner gear outer ring 1201. When the inner gear outer ring 1201 rotates, the baffles block the photoelectric sensors in sequence. After one baffle blocks the photoelectric sensor, when the next baffle blocks the photoelectric sensor, the moving distance of the left threaded tube, the right threaded tube and the sleeve 1102 is exactly the thickness of a dumbbell plate 2000. Therefore, the moving distance of the left threaded tube, the right threaded tube and the sleeve 1102 can be detected.

[0075] In some embodiments, a second self-tapping screw position is provided on the main bracket 1205, and the handle circuit board 4001 is fixed to the main bracket using the self-tapping screw. The photoelectric sensor is provided on the handle circuit board 4001, and the drive motor 1206 is electrically connected to the handle circuit board 4001. Five through holes are provided on the flat position of the contact circle 1304 on the end shell 1302, and the contact 4003 with five electrical connection points is inserted into the five through holes and fixed with glue. The contact 4003 is electrically connected to the handle circuit board 4001.

[0076] The base 3000 includes an upper cover 3001, a bottom shell 3002, a display screen support 3003, a base weight 3004 and a display screen lens 3005. A main circuit board, a probe circuit board 4005, a base reset circuit board and a display screen circuit board 4004 are arranged in the bottom shell 3002. The base reset circuit board is electrically connected to the main circuit board.

[0077] A handle reset circuit board 4002 is provided in the handle 1000, and the handle reset circuit board 4002 is electrically connected to the handle circuit board 4001. A small through hole is provided on one side of the end shell 1302, and fourth screw mounting positions are provided on both sides of the through hole. There are screw through holes on the handle reset circuit board 4002, and the handle reset circuit board 4002 can be fixed to the end shell 1302 by screws.

[0078] The top surface of the display bracket 3003 is provided with a display mounting position, through holes are provided on both sides of the display bracket 3003, self-tapping screw holes are provided on the bottom surface of the display bracket 3003, screw through holes are provided on the display circuit board 4004, and a touch key indicator light is provided on the display circuit board 4004. The display screen 4006 is installed on the display mounting position of the display bracket 3003, and the display screen 4006 is fixed to the display bracket 3003 by interference fit to prevent it from falling. The display circuit board 4004 is electrically connected to the main circuit board.

[0079] Use self-tapping screws to pass through the screw holes on the display screen circuit board 4004 and then screw them into the self-tapping screw holes on the display screen bracket 3003 to fix the display screen circuit board 4004 on the display screen bracket 3003.

[0080] An inclined plane is set on one side of the upper cover 3001, and a display screen lens installation position is set on the inclined plane. There is a square through hole in the middle of the display screen lens installation position, and there are circular through holes on both sides of the square through hole. A first self-tapping screw column position is set on the inner side of the inclined plane. Use a self-tapping screw to pass through the self-tapping screw through hole of the display screen bracket 3003, and fix the display screen bracket 3003 on the first self-tapping screw column position on the upper cover 3001. At this time, the picture displayed on the display screen 4006 can be seen through the square through hole on the inclined plane, and the circular through holes on both sides allow the light of the touch key indicator light to pass through. Use glue or double-sided tape to install the display screen lens 3005 on the display screen installation position.

[0081] The middle of the upper cover 3001 is concave, with elliptical protrusions on both sides, a probe through hole is set in the middle of the protrusion, and second self-tapping screw posts are set on the corresponding inner sides. A group of probes are welded on the probe circuit board 4005, the probes are inserted into the probe through holes, and the probe circuit board 4005 is fixed to the upper cover 3001 with screws. Similarly, another probe circuit board 4005 is symmetrically set on the other side. The probe circuit board 4005 is electrically connected to the main circuit board. A placement slot is set on the upper cover 3001. When the handle 1000 is placed in the placement slot, the probe circuit board 4005 contacts the contact 4003 and is electrically connected.

[0082] There is an elliptical through hole on the upper cover 3001, and the third self-tapping screw posts on both sides; there is a Type-C socket on the base reset circuit board, a touch switch in the middle of the other side, and screw holes on both sides. Insert the Type-C socket into the elliptical through hole on one side, and fix the base reset circuit board on the third screw post with self-tapping screws.

[0083] There are mounting posts at both ends of the bottom shell 3002, and through holes on the base counterweight 3004, which can be inserted into the mounting posts and fixed to the bottom shell 3002 with self-tapping screws. Similarly, the base counterweight 3004 is installed at the other end. There is a fourth self-tapping screw post on the upper cover 3001, and screw holes on the bottom shell, and the upper cover 3001 and the bottom shell 3002 can be fixed together with self-tapping screws.

[0084] On the base 3000, a "+" button and a "-" button are respectively arranged on both sides of the display screen 4006, and the "+" button and the "-" button are respectively connected to the main circuit board. After the handle 1000 is placed in the placement slot on the base 3000, the probe circuit board 4005 contacts the contact 4003 and is electrically connected. Thereby, the handle circuit board 4001 is connected to the main circuit board. At this time, the "+" button or the "-" button of the touch button can be pressed to adjust the weight of the smart dumbbell. When the "+" button is pressed, the battery supplies power to the drive motor 1206, and the drive motor 1206 rotates forward, driving the transmission gear 1204 to rotate, and the transmission gear 1204 drives the inner tube body 1101 to rotate, and the inner tube body 1101 drives the main shaft 1110 to rotate, and the left-handed and right-handed double-headed threads on the main shaft push out the left-threaded tube and the right-threaded tube on both sides. At the same time, the inner tooth outer ring 1201 is driven to rotate. When it rotates to a certain angle, the blocking bar on the inner tooth outer ring 1201 blocks the photoelectric sensor of the handle circuit board 4001. The photoelectric sensor sends a control signal to the control module, and the control module controls the drive motor 1206 to stop rotating, the main shaft 1110 stops pushing the left threaded tube and the right threaded tube, and a dumbbell plate is mounted on each side of the dumbbell handle, and the weight of the dumbbell handle increases to the first gear. When the "+" key is pressed twice, the forward rotation angle of the drive motor 1206 increases, the photoelectric sensor receives two blocking signals, the drive motor 1206 stops rotating, and two dumbbell plates are mounted on each side of the dumbbell handle. The weight of the dumbbell handle increases to the second gear, and the weight gear of the dumbbell handle can be increased to the fifth gear in turn. Similarly, when the "-" key is pressed, the dumbbell plates mounted on both sides of the dumbbell handle are reduced, and the gear is reduced in turn.

[0085] At the same time, the display screen 4006 on the base 3000 can display the weight position of the dumbbell at this time. When the handle 1000 is placed in the placement slot on the base 3000, the contact 4003 and the probe circuit board 4005 are connected to communicate. At this time, the touch button is functional and the gear position can be selected. When the handle 1000 is taken away from the base 3000, the touch button cannot be used and the motor on the handle 1000 will not rotate, preventing the dumbbell pieces on the dumbbell handle from falling off and improving the safety of the dumbbell.

[0086] As an optional embodiment, the dumbbell plate 2000 includes: a dumbbell plate body 2001, a first connecting portion 2002 connected to a first end surface of the dumbbell plate body 2001, and a second connecting portion 2003 connected to a second end surface of the dumbbell plate body 2001, wherein a dovetail groove is provided on the first connecting portion 2002, and a dovetail protrusion that can be inserted into the dovetail groove is provided on the second connecting portion 2003. The dovetail groove is a trapezoidal vertical groove, and the dovetail protrusion is a trapezoidal column.

[0087] A plurality of slots are provided on the top of the upper cover 3001, and a plane is provided on the bottom of the dumbbell plate body 2001, so as to prevent the dumbbell plate body 2001 from rolling. When the dumbbell plate bodies 2001 are placed into the slots one by one, two adjacent dumbbell plate bodies 2001 are connected by the dovetail protrusions being inserted into the dovetail slots, so that the two adjacent dumbbell plate bodies 2001 are fixed in the arrangement direction of the dumbbell plate bodies 2001. When one of the two adjacent dumbbell plate bodies 2001 is lifted upward, the dovetail protrusion leaves the dovetail slot and the two dumbbell plate bodies 2001 can be separated.

[0088] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. used herein to indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0089] In the description of this article, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0090] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and cannot be construed as limitations of the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application. It is understood that the same or similar parts in the above embodiments may refer to each other, and the contents not described in detail in some embodiments may refer to the same or similar contents in other embodiments. The multiple schemes provided in the present application include the basic schemes themselves, which are independent of each other and do not restrict each other, but they may also be combined with each other without conflict to achieve a plurality of effects to be realized together.

Claims

1. A dumbbell, characterized in that: include: A handle (1000), the handle (1000) comprising a spindle telescopic assembly (1100), a drive assembly (1200) and a handle housing assembly (1300), the spindle telescopic assembly (1100) being arranged inside the handle housing assembly (1300), the drive assembly (1200) being in power connection with the spindle telescopic assembly (1100), and the drive assembly (1200) being capable of driving the telescopic portion of the spindle telescopic assembly (1100) to extend out of a through hole on the handle housing assembly (1300); A dumbbell plate (2000), wherein the dumbbell plate (2000) is provided with a central hole; A base (3000), wherein the base (3000) is provided with a plurality of slots for placing the dumbbell plates (2000) and a placement slot for placing the handle (1000); when the plurality of dumbbell plates are placed in the slots respectively, the center holes are coaxially aligned; and when the telescopic portion of the main shaft telescopic assembly (1100) extends out of the through hole on the handle housing assembly (1300), it can sequentially extend into the center holes of the plurality of dumbbell plates (2000); A sensor is arranged in the handle housing assembly (1300), the sensor is connected to the control module signal, the control module is connected to the drive assembly (1200) signal, the sensor is used to detect the movement distance of the telescopic part of the main shaft telescopic assembly (1100), and the control module can control the start and stop of the drive assembly (1200).

2. The dumbbell according to claim 1, characterized in that: The handle housing assembly (1300) comprises: An outer tube body (1301), wherein the main shaft telescopic assembly (1100) is arranged inside the outer tube body (1301); An end shell (1302), one end shell (1302) is respectively connected to both ends of the outer tube body (1301); A cover (1307) is disposed on the end shell (1302), and the cover (1307) is provided with an extension hole for the telescopic part of the main shaft telescopic assembly (1100) to extend out.

3. The dumbbell according to claim 2, characterized in that: The main shaft telescopic assembly (1100) comprises: An inner tube body (1101), the inner tube body (1101) being rotatably inserted in the outer tube body (1301); A main rotating shaft (1110) is fixedly arranged in the inner tube body (1101), and a left stud and a right stud are respectively arranged at two ends of the main rotating shaft (1110); A left-hand threaded tube, which is sleeved on the left stud and slidably connected to the inner tube body (1101), and the left-hand threaded tube can extend out of the first end of the inner tube body (1101) and extend out of the extension hole on the cover (1307); A right threaded tube is sleeved on the right stud and slidably connected to the inner tube body (1101); the right threaded tube can extend out of the second end of the inner tube body (1101) and extend out of the extension hole on the cover (1307).

4. The dumbbell according to claim 3, characterized in that: The main shaft telescopic assembly (1100) further comprises: The two sleeves (1102) are slidably inserted into the inner tube body (1101), and the two sleeves (1102) are respectively sleeved on the left threaded tube and the right threaded tube; the left upper half threaded tube (1103) and the left lower half threaded tube (1104) are spliced ​​to form the left threaded tube, and the right upper half threaded tube (1105) and the right lower half threaded tube (1106) are spliced ​​to form the right threaded tube.

5. The dumbbell according to claim 3, characterized in that: The driving assembly (1200) comprises: A main support (1205) is fixedly disposed in the end shell (1302); A driving motor (1206) is fixedly mounted on the main support (1205); A driving gear (1202), the driving gear (1202) being in power connection with the driving motor (1206); The transmission gear (1204) is sleeved on the inner tube body (1101), the transmission gear (1204) is meshed with the driving gear (1202), and the transmission gear (1204) is dynamically connected to the inner tube body (1101).

6. The dumbbell according to claim 5, characterized in that: The driving assembly (1200) further comprises: an inner tooth outer ring (1201) and a driven gear (1203); the inner tooth outer ring (1201) and the driven gear (1203) are respectively rotatably connected to the main bracket (1205); the driven gear (1203) is respectively meshed with the inner tooth outer ring (1201) and the transmission gear (1204); a plurality of baffles are arranged on the inner tooth outer ring (1201); the sensor is a photoelectric sensor and is arranged along the radial direction of the inner tooth outer ring (1201); and the baffles can shield the photoelectric sensor.

7. The dumbbell according to claim 6, characterized in that: A contact (4003) is provided on the end shell (1302), a circuit board (4001) is provided in the end shell (1302), the photoelectric sensor is provided on the circuit board (4001), the drive motor (1206) is electrically connected to the circuit board (4001), the contact (4003) is electrically connected to the circuit board (4001), a probe circuit board (4005) and a main circuit board electrically connected to the probe circuit board (4005) are provided in the placement slot on the base (3000), the control module is integrated on the main circuit board, and when the handle (1000) is placed in the placement slot, the probe circuit board (4005) contacts and is electrically connected to the contact (4003).

8. The dumbbell according to claim 7, characterized in that: A display screen (4006) is provided on the base (3000), and the display screen (4006) is connected to the main circuit board.

9. The dumbbell according to claim 7, characterized in that: The base (3000) is provided with a "+" button and a "-" button, and the "+" button and the "-" button are respectively connected to the main circuit board.

10. The dumbbell according to claim 1, characterized in that: The dumbbell plate (2000) comprises: a dumbbell plate body (2001), a first connecting portion (2002) connected to a first end surface of the dumbbell plate body (2001), and a second connecting portion (2003) connected to a second end surface of the dumbbell plate body (2001), wherein the first connecting portion (2002) is provided with a dovetail groove, and the second connecting portion (2003) is provided with a dovetail protrusion that can be inserted into the dovetail groove, and the handle housing assembly (1300) is provided with the dovetail groove.

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