Application of dumbbell weight structures
By incorporating the design of corrugated columns and counterweight pins, combined with the telescopic rod and flange structure, flexible adjustment of dumbbell weight levels is achieved, solving the problems of increased size and insufficient adjustment precision of traditional dumbbells, and improving the user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 陈友本
- Filing Date
- 2025-06-10
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional dumbbells require an increased number of weight plates to adjust the weight settings, resulting in a larger size that cannot meet the needs of customers who require high precision in weight adjustment and a compact design.
The design employs a corrugated column and counterweight pin, allowing adjustment of the number of bells and weight settings by rotating the handle. Combined with the structure of the telescopic rod and flange, it enables flexible adjustment of the number of bells and counterweights.
It enables flexible adjustment of the number of spools and weight settings, meeting the requirements for high-precision weight adjustment. It has a simple structure, is easy to operate, and improves the user experience.
Smart Images
Figure CN224442031U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a counterweight structure for an application dumbbell that can provide double the number of weight adjustment levels. Background Technology
[0002] Traditional adjustable dumbbells require a number of weight plates equal to the number of weight adjustment levels. With the same number of weight plates, there are fewer adjustment levels. To increase the adjustment levels, you need to increase the number of weight plates and the size of the dumbbell. This cannot meet the needs of customers who require high precision in weight adjustment and small dumbbell size. Utility Model Content
[0003] This utility model provides a counterweight structure for dumbbells to solve the aforementioned technical problems, specifically adopting the following technical solution:
[0004] A counterweight structure for dumbbells includes: a dumbbell; a counterweight block detachably mounted on the dumbbell for adjusting the number of weight levels; a corrugated column with concave and convex corrugations rotatably mounted on the dumbbell, and a drive structure for driving the corrugated column to rotate; a counterweight pin elastically mounted within the dumbbell body; a counterweight block having a counterweight insertion hole for engaging the counterweight pin; when the drive structure drives the corrugated column to rotate until its convex portion contacts the counterweight pin, the counterweight pin inserts into the counterweight block; when the drive structure drives the corrugated column to rotate until its concave portion contacts the counterweight pin, the counterweight pin disengages from the counterweight block.
[0005] Furthermore, the dumbbell's counterweight structure includes a base for positioning the dumbbell as a whole; multiple weight plates from both ends of the dumbbell are positioned at the two ends of the base; the driving structure is a grip bar between the weight plates at both ends of the dumbbell; two telescopic rods for supporting the multiple weight plates at both ends of the dumbbell are telescopically installed inside the grip bar; through holes for inserting the telescopic rods are formed in the center of the multiple weight plates; flanges are installed at both ends of the grip bar; a rotation indexing structure is provided between the flanges and the grip bar; corrugated columns are formed on the periphery of the structure connecting the two ends of the grip bar; counterweight holes are formed on both sides of the flanges; counterweight pins are elastically installed in the counterweight holes; counterweight blocks are provided at both ends of the base at positions corresponding to the flanges; when the grip bar rotates to a specified index, the protrusions of the corrugated columns drive the counterweight pins into the counterweight insertion holes; when rotating to another specified index, the concave parts of the corrugated columns allow the counterweight pins to disengage from the counterweight insertion holes.
[0006] Furthermore, the wall of the through hole of the bell has two grooves for engaging the end locking structure of the telescopic rod; starting from the initial position where the telescopic rod is not inserted into the through hole, every odd number of rotations of the handle bar, when the telescopic rod is inserted to the halfway point of the corresponding bell, one end of the counterweight pin slides into the recess of the corrugated post, and the counterweight pin disengages from the counterweight hole under the action of the spring; every even number of rotations, when the telescopic rod is inserted to the full thickness position of the corresponding bell, one end of the counterweight pin pushes up against the protrusion of the corrugated post, and the counterweight pin overcomes the spring action and inserts into the counterweight hole.
[0007] Furthermore, counterweight holes are formed on both sides of the flange; counterweight insertion holes for matching the counterweight holes are formed on both sides of the counterweight block.
[0008] Furthermore, the base has baffles at both ends for limiting and pressing multiple bell plates; the counterweight is suspended in the counterweight insertion hole and close to the baffle so that the counterweight will not wobble during use.
[0009] Furthermore, the two adjacent baffles at both ends of the base are each provided with a positioning pin; the counterweight can be detachably inserted into the outer periphery of the positioning pin through the positioning hole.
[0010] Furthermore, the two adjacent baffles at both ends of the base are both formed with arcs; the counterweight is an arc-shaped block adapted to the arc.
[0011] The advantage of this utility model is that the weight structure of the dumbbell provided, through the design and cooperation of the corrugated column and the weight pin, not only allows for adjustment of the number of weight plates when rotating the grip, thus enabling the replacement of the number of weight plates in the dumbbell, but also increases the weight adjustment levels. It is convenient to use, can meet the needs of customers with high requirements for weight adjustment accuracy, and effectively improves the user experience. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the counterweight structure of the dumbbell used in this utility model;
[0014] Figure 2 yes Figure 1 A schematic diagram showing the internal telescopic rod and weight plates of the weight structure used in dumbbells;
[0015] Figure 3 yes Figure 1A schematic diagram of the corrugated column and counterweight structure of the dumbbell used in the application;
[0016] Figure 4 yes Figure 1 A schematic diagram of the installation structure of the counterweight block and flange in the weight structure of the dumbbell used in the application;
[0017] Figure 5 yes Figure 1 A cross-sectional view of the counterweight block and flange of the weight structure used in dumbbells;
[0018] Adjustable telescopic structure 10 for dumbbells, dumbbell 11, weight plate 111, through hole 1111, groove 1112, grip bar 112, corrugated column 1121, telescopic rod 113, flange 114, counterweight hole 1141, positioning hole 115, counterweight pin 116, indexing plate 117, indexing hole 1171, base 12, positioning pin 121, baffle 122, arc 123, counterweight block 14, counterweight insertion hole 141. Detailed Implementation
[0019] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.
[0020] like Figures 1 to 5 As shown, this application discloses an adjustable telescopic structure 10 for dumbbells, comprising: a dumbbell 11 and a base 12, wherein the base 12 is used to limit the placement of the dumbbell 11. Specifically:
[0021] The dumbbell 11 has multiple weight plates 111 at each end, and the base 12 limits the placement of these weight plates 111 at each end. A grip bar 112 is located between the weight plates 111 at each end of the dumbbell 11. Two telescopic rods 113 are telescopically installed within the grip bar 112, supporting the weight plates 111 at each end of the dumbbell 11. A helical drive groove is formed on the inner side of the grip bar 112, and a drive protrusion is formed on the outer periphery of the telescopic rod 113 to engage with the helical drive groove. When the grip bar 112 rotates, the engagement of the helical drive groove and the drive protrusion drives the telescopic rod 113 to extend or retract. A through hole 1111 is formed in the center of each weight plate 111 for inserting the telescopic rod 113. Flanges 114 are mounted on both ends of the handle 112. A rotary indexing structure is provided between the flanges 114 and the handle 112. Specifically, an indexing plate 117 is located inside the flanges 114, and pin holes 1121 are formed at both ends of the handle 112. Indexing pins are elastically installed within the pin holes 1121. Multiple indexing holes 1171 are evenly distributed circumferentially on the indexing plate 117 for the insertion of the indexing pins. When the handle 112 is rotated, the indexing pins slide along the side of the indexing plate 117 under the compression of the spring, thereby sequentially inserting into the corresponding indexing holes 1171, achieving precise and smooth indexing. For each degree of indexing, the telescopic rod 113 is driven to extend a specified distance. This indexing structure is simple, easy to operate, and has low structural cost.
[0022] Furthermore, corrugated posts 1121 are formed on the circumference of both ends of the handle 112. Indexing pins are elastically disposed on the sides of the corrugated posts 1121, resulting in a simple structure and more compact installation space. The corrugated posts 1121 have concave and convex corrugations. Counterweight holes 14111411 are formed on both sides of the flange 114, and counterweight pins 116 are elastically disposed within the counterweight holes 14111411. Counterweight blocks 14 are inserted into the base 12 at positions corresponding to the flange 114 at both ends. Counterweight insertion holes 141 are formed on both sides of the counterweight blocks 14 for the corresponding counterweight pins 116 to be inserted. Thus, when the handle 112 rotates to a specified indexing position, the protrusions of the corrugated posts 1121 drive the counterweight pins 116 into the counterweight insertion holes 141, thereby fixing the counterweight blocks 14 to the flange and increasing the weight of each bell 111, thereby increasing the weight range. In this way, the structure for adjusting the number of bells 111 and the counterweight adjustment is integrated, resulting in a simple structure, flexible and convenient operation, and a better user experience.
[0023] In one specific implementation, the through hole 1111 of the bell 111 has two grooves 1112 formed on its wall. Both grooves 1112 can be used with the end locking structure of the telescopic rod to fix the bell 111, thereby adjusting the number of bells 111. From the initial position where the telescopic rod 113 is not inserted into the through hole 1111, every odd number of rotations, the telescopic rod 113 inserts into the first groove 1112 along the axial direction of the corresponding bell 111. At this time, one end of the counterweight pin 116 slides into the recess of the corrugated post 1121, and the counterweight pin 116 disengages from the counterweight hole 1411 under the action of the spring. At this time, the selected bell 111 is not weighed. From the initial position where the telescopic rod 113 is not inserted into the through hole 1111, the lever 112 rotates an even number of divisions. The telescopic rod 113 is inserted into the second groove 1112 along the axial direction of the corresponding bell 111, which is the thickness of the entire bell 111. At this time, one end of the counterweight pin 116 pushes against the protrusion of the corrugated post 1121. The counterweight pin 116 overcomes the spring action and inserts into the counterweight hole 1411, thus adding weight to the selected bell 111.
[0024] Specifically, the first groove 1112 along the axial direction of the bell 111 is located at the halfway point of the bell 111, and the second groove 1112 along the axial direction of the bell 111 is located on the side of the bell 111 away from the grip 112. Each rotation of the grip 112 advances the telescopic rod 113 by half the thickness of the bell 111. When the telescopic rod 113 is at the halfway point, a locking structure at the end of the telescopic rod fixes the position of the bell 111 to the telescopic rod. When the dumbbell 11 is lifted, the ends of the two counterweight pins 116 inside the flange are exactly in the recess of the corrugated post 1121 of the handle 112. Due to the spring action, the counterweight pins 116 retract inward until they disengage from the counterweight insertion hole 141, so that the counterweight block 14 is disengaged from the flange 114. The flanges 114 on both sides of the dumbbell 11 do not carry counterweight plates. At this time, the dumbbell 11 is its own weight carrying the specified number of weight plates 111. When the grip 112 is rotated, causing the telescopic rod 113 to advance to the full thickness of the dumbbell 111, the end of the counterweight pin 116 inside the flange 114 is precisely at the protrusion on the surface of the corrugated column 1121. The counterweight pin 116 extends outward and inserts into the counterweight insertion hole 141 of the weight-adding block, thus combining the weight-adding block with the flange. This adds the weight of two weight-adding blocks 14 to the dumbbell 11, which is half the weight of the dumbbell 111, meaning half the weight of each weight increment. For example, if the dumbbell 111 originally had 2 kg increments, after adding the counterweight, the increments become 1 kg, doubling the number of selectable weight increments. For instance, if there were originally 10 weight increments of 2 kg each, with the counterweight 14, there could be 20 weight increments of 1 kg each. Reducing weight is achieved by reversing the grip 112, causing the telescopic rod 113 to retract and release the weight—the same principle applies. This structure with counterweight 14 is lower in cost and more compact and superior in structure.
[0025] In one specific implementation, baffles 122 are provided at both ends of the base 12 to limit and press multiple bell blades 111. The arcuate portion 123 formed by the two adjacent baffles 122 at both ends of the base 12 is provided with the aforementioned positioning pin 121. The counterweight 14 is detachably inserted into the outer periphery of the positioning pin 121 through a positioning hole 115 and installed on the arcuate portion 123, resulting in a simple installation structure. The counterweight 14 is detachably inserted into the outer periphery of the positioning pin 121 through the positioning hole 115.
[0026] Furthermore, the two baffles at both ends of the base that are close to each other are both formed with arcs, and the counterweight 14 is an arc-shaped block adapted to the arc.
[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments do not limit this utility model in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.
Claims
1. A weight structure for use with a dumbbell, comprising: Dumbbell; characterized in that, The dumbbell is detachably equipped with a counterweight for adjusting the number of settings of the dumbbell; The dumbbell is equipped with a corrugated column with concave and convex corrugations and is fitted with a drive structure for driving the corrugated column to rotate. The dumbbell has a counterweight pin that is elastically installed inside its body; The counterweight block is provided with a counterweight insertion hole for engaging the counterweight pin; When the drive structure drives the corrugated column to rotate until its protrusion contacts the counterweight pin, the counterweight pin is inserted into the counterweight block. When the drive structure drives the corrugated column to rotate until its concave portion contacts the counterweight pin, the counterweight pin disengages from the counterweight block.
2. The weight structure for using dumbbells according to claim 1, characterized in that, The weight structure of the dumbbell is provided with a base for limiting and placing the entire dumbbell; The base has multiple weight plates at both ends of the dumbbell respectively positioned and limited. The driving structure is a grip bar provided between the dumbbell plates at both ends; The grip bar has two telescopic rods that are respectively used to support the multiple weight plates at both ends of the dumbbell; The center of each of the bell blades has a through hole for inserting the telescopic rod; Flanges are installed at both ends of the grip; A structure for rotary indexing is provided between the flange and the handle; The corrugated columns are formed on the periphery where the two ends of the grip connect; The flange has counterweight holes on both sides; The counterweight pin is elastically provided inside the counterweight hole; The base has counterweights at both ends, corresponding to the flange. When the grip is rotated to a specified degree, the protrusion of the corrugated post drives the counterweight pin into the counterweight insertion hole. When rotated to another specified degree, the concave part of the corrugated post allows the counterweight pin to disengage from the counterweight insertion hole.
3. The weight structure for using dumbbells according to claim 2, characterized in that, The wall of the through hole of the bell is formed with two grooves for engaging the end locking structure of the telescopic rod. From the initial position where the telescopic rod is not inserted into the through hole, every odd number of rotations of the grip bar, when the telescopic rod is inserted to the halfway point corresponding to the bell, one end of the counterweight pin slides into the recess of the corrugated post, and the counterweight pin disengages from the counterweight hole under the action of the spring; every even number of rotations, when the telescopic rod is inserted to the full thickness position corresponding to the bell, one end of the counterweight pin pushes against the protrusion of the corrugated post, and the counterweight pin overcomes the spring action and inserts into the counterweight hole.
4. The weight structure for using dumbbells according to claim 2, characterized in that, The flange has counterweight holes on both sides; The counterweight has counterweight insertion holes on both sides for fitting the counterweight holes.
5. The weight structure for using dumbbells according to claim 2, characterized in that, The base has baffles at both ends for limiting and pressing the multiple bell pieces; The counterweight is suspended from the counterweight socket and close to the baffle so that the counterweight will not wobble during use.
6. The counterweight structure for dumbbells according to claim 5, characterized in that, The two adjacent baffles at both ends of the base are each equipped with a positioning pin; The counterweight can be detachably inserted into the outer periphery of the positioning pin through a pre-formed positioning hole.
7. The counterweight structure for dumbbells according to claim 6, characterized in that, Both of the two adjacent baffles at both ends of the base are formed with arcs; The counterweight is an arc-shaped block adapted to the arc portion.