A dumbbell

Abstract

The utility model discloses a dumbbell, including handle, dumbbell head, the dumbbell head is two, realizes the connection through the fixed orifice sleeve connection at the both ends of handle on the inside surface of dumbbell head, still be provided with the injection port for injecting colloid at fixed orifice port place, two end surfaces of dumbbell head are all flat surface, still be provided with annular groove on the inside end surface of dumbbell head. The injection port of simple and utility model in the setting is convenient for the injection of colloid, and the colloid is evenly dispersed to the contact gap place of dumbbell head fixed orifice end and handle through the injection port, and the air in the gap is discharged outward, so that the dumbbell head and handle connection place form complete solid, and the person who builds up strength can make the dumbbell emit the dull sound when contacting the ground in use, guarantees the comfortable hearing feeling, the annular groove of setting on the inside end surface of dumbbell head reduces the deformation condition of dumbbell head in the manufacturing demoulding due to the extrusion of both sides, improves the stability of dumbbell quality.

Description

Technical Field

[0001] This utility model belongs to the field of fitness equipment technology, specifically relating to a dumbbell. Background Technology

[0002] Dumbbells are a type of auxiliary equipment for fitness exercises, and their lightweight nature makes them popular among fitness enthusiasts. However, in current technology, the dumbbell heads are prone to deformation during demolding due to the pressure from both sides, affecting the quality of the dumbbells. Furthermore, during manufacturing, after the handles are pressed into the fixing holes on the inner sides of the dumbbell heads using a press, a sealant is injected directly into the gap between the fixing holes and the handles. While this seal achieves a seal, residual air remains between the fixing holes and the handles, resulting in a dull sound when the dumbbell hits the ground, negatively impacting the user's auditory experience. Utility Model Content

[0003] In response to the problems raised in the background technology, this utility model researches and designs a dumbbell, the purpose of which is to provide a dumbbell whose head is not easily deformed during demolding, has stable quality, and has a good sound quality during use.

[0004] The technical solution of this utility model: A dumbbell includes a handle and two dumbbell heads, which are connected to the two ends of the handle by means of fixing holes on the inner side of the dumbbell heads. An injection port for injecting colloid is also provided at the port of the fixing hole. Both end faces of the dumbbell heads are flat surfaces, and an annular groove is also provided on the inner end face of the dumbbell heads.

[0005] Preferably, there are at least two injection ports.

[0006] Preferably, the handle is also provided with anti-slip texture.

[0007] Preferably, the diameter of the fixing hole is larger than the diameter of the two sleeve ends of the handle.

[0008] Preferably, the end face of the dumbbell head is chamfered.

[0009] Preferably, the shape of the dumbbell head is including but not limited to cylindrical, circular, trapezoidal, and hexagonal.

[0010] Preferably, there are at least two annular grooves.

[0011] The beneficial effects of this utility model are as follows: This utility model has a reasonable structure and novel design. The injection port facilitates the injection of colloid, which is evenly dispersed through the injection port to the gap between the end of the dumbbell head fixing hole and the handle. Air inside the gap is discharged outward, making the connection between the dumbbell head and the handle completely solid. When the user uses it, the dumbbell makes a dull sound when it contacts the ground, ensuring a comfortable listening experience. The annular groove on the inner end face of the dumbbell head reduces the deformation caused by the squeezing action on both sides during manufacturing and demolding, improving the stability of the dumbbell quality and giving it high practical value. Attached Figure Description

[0012] Figure 1 This is a cross-sectional structural diagram of the present invention; Figure 2 This is a schematic diagram of the dumbbell head structure in this utility model; Figure 3 This is another structural diagram of the dumbbell head in this utility model; Figure 4 This is a top view of the dumbbell head structure in this utility model; Figure 5 This is a cross-sectional view of the dumbbell head in this utility model.

[0013] The components include: 1. handle, 2. dumbbell head, 3. fixing hole, 4. injection port, and 5. annular groove. Detailed Implementation

[0014] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0015] like Figures 1-5 As shown, a dumbbell includes a handle 1 and a dumbbell head 2. There are two dumbbell heads 2, which are connected to the two ends of the handle 1 by means of fixing holes 3 on the inner side of the dumbbell head 2. An injection port 4 for injecting colloid is also provided at the port of the fixing hole 3. Both end faces of the dumbbell head 2 are flat surfaces, and an annular groove 5 is also provided on the inner end face of the dumbbell head 2.

[0016] In this embodiment, as Figures 1-5 As shown, there are two injection ports 4, but there can also be three, four, etc.

[0017] In this embodiment, as Figure 1 As shown, the handle 1 is also provided with anti-slip texture (not shown in the figure).

[0018] In this embodiment, as Figure 1As shown, the diameter of the fixing hole 3 is larger than the diameter of the two sleeve ends of the handle 1, so that the fixing hole 3 on the inner side of the dumbbell head 2 is sleeved on both ends of the handle 1.

[0019] In this embodiment, as Figures 1-5 As shown, the end face of the dumbbell head 2 is chamfered (not shown in the figure).

[0020] In this embodiment, as Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the overall shape of the dumbbell head 2 is cylindrical, but it can also be made into a circle, trapezoid, hexagon, etc.

[0021] In this embodiment, as Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, there are at least three annular grooves 5.

[0022] Specific usage process: During the manufacturing process, when the dumbbell head 2 is demolded, the annular groove 5 can disperse the stress concentrated at a certain point of the dumbbell head 2 to the surrounding area of ​​the annular groove 5, avoiding excessive local stress that could cause deformation. After the two ends of the handle 1 are pressed into the fixing holes 3 on the inner side of the two dumbbell heads by the press, the colloid is injected into the gap between the fixing holes 3 of the dumbbell head 2 and the handle 1 through the injection port 4. The colloid is evenly dispersed through the injection port 4 to the gap where the end of the fixing hole 3 of the dumbbell head 2 contacts the handle 1, and the air inside the gap is discharged outward, thus achieving a sealing treatment between the fixing holes 3 of the dumbbell head 2 and the handle 1. The anti-slip texture (not shown in the figure) provided on the handle 1 in this utility model enhances the friction between the handle 1 and the user's palm, prevents slippage, and improves safety during use. The injection port 4 facilitates the injection of colloid, which is evenly distributed through the injection port 4 to the contact gap between the end of the dumbbell head 2 fixing hole 3 and the handle 1. Air inside the gap is discharged outward, making the connection between the dumbbell head and the handle completely solid. When the user uses the dumbbell, it makes a dull sound when it contacts the ground, ensuring a comfortable listening experience. The annular groove 5 provided on the inner end face of the dumbbell head 2 reduces the deformation of the dumbbell head 2 due to the squeezing action on both sides during manufacturing and demolding, thus improving the stability of the dumbbell's quality.

[0023] In summary, this utility model has achieved the expected results.

[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A dumbbell, characterized in that: It includes a handle and two dumbbell heads, which are connected to the two ends of the handle by means of fixing holes on the inner side of the dumbbell heads. The fixing holes are also provided with injection ports for injecting colloid. Both end faces of the dumbbell heads are flat, and an annular groove is also provided on the inner end face of the dumbbell heads.

2. The dumbbell as described in claim 1, characterized in that: There are at least two injection ports.

3. The dumbbell as described in claim 1, characterized in that: The handle is also equipped with anti-slip texture.

4. The dumbbell as described in claim 1, characterized in that: The diameter of the fixing hole is larger than the diameter of the two sleeve ends of the handle.

5. A dumbbell as described in claim 1, characterized in that: The end face of each dumbbell head is chamfered.

6. A dumbbell as described in claim 1, characterized in that: The dumbbell head can be in the shape of, but is not limited to, cylindrical, circular, trapezoidal, or hexagonal.

7. The dumbbell as described in claim 1, characterized in that: There are at least two annular grooves.

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