CN109248397B - Assembled disc for dumbbell or barbell and assembling method thereof - Google Patents
Assembled disc for dumbbell or barbell and assembling method thereof Download PDFInfo
- Publication number
- CN109248397B CN109248397B CN201811174997.7A CN201811174997A CN109248397B CN 109248397 B CN109248397 B CN 109248397B CN 201811174997 A CN201811174997 A CN 201811174997A CN 109248397 B CN109248397 B CN 109248397B
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- China
- Prior art keywords
- upper cover
- edge
- shell
- core tube
- lower shell
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000004576 sand Substances 0.000 claims abstract description 44
- 238000005452 bending Methods 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 25
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 6
- 238000012545 processing Methods 0.000 abstract description 16
- 238000005056 compaction Methods 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000004080 punching Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000007711 solidification Methods 0.000 abstract description 2
- 230000008023 solidification Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 239000000047 product Substances 0.000 description 10
- 239000004568 cement Substances 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 6
- 238000000071 blow moulding Methods 0.000 description 5
- 238000005266 casting Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000009924 canning Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/06—User-manipulated weights
- A63B21/072—Dumb-bells, bar-bells or the like, e.g. weight discs having an integral peripheral handle
- A63B21/0724—Bar-bells; Hand bars
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/06—User-manipulated weights
- A63B21/072—Dumb-bells, bar-bells or the like, e.g. weight discs having an integral peripheral handle
- A63B21/0726—Dumb bells, i.e. with a central bar to be held by a single hand, and with weights at the ends
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Orthopedic Medicine & Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention belongs to the field of human life necessity, and discloses an assembled disc for a dumbbell or a barbell and an assembling method thereof. The shell is a metal shell and consists of an upper cover, a lower shell and a core tube. The lower shell comprises a bottom surface and a surrounding edge formed by bending upwards from the outer edge of the bottom surface, and the upper edge of the surrounding edge is bent inwards from the upper edge of the upper cover to form a folded edge to press the edge of the upper cover; the bottom surface constitutes the diapire of casing, and the surrounding edge constitutes the lateral wall of casing, the upper cover constitutes the roof of casing, the centre of upper cover and inferior valve is established the centre bore respectively, and upper end and the lower extreme of core pipe are connected with the centre bore of upper cover and inferior valve respectively. The shell processing and sand compaction can be completed by a punching machine, the equipment cost is low, and the processing condition requirement is low; the processing process does not need heating, the processing energy consumption is low, the processing process does not need working procedures such as cooling, solidification and the like which need waiting, and the processing efficiency is high.
Description
Technical Field
The invention belongs to the field of human life necessity, and relates to a training device for promoting or enhancing the growth of muscles or joints of a human body without depending on thrust, in particular to a dumbbell or a barbell.
Background
Dumbbells and barbells are two common fitness training devices, and are popular because of being simple and easy to use. The dumbbell and the barbell have basically the same structure, and are formed by assembling one or more disc-shaped or spherical weights at two ends of the rod-shaped component, wherein the disc-shaped weights are commonly called dumbbell plates or barbell plates. Most of the common dumbbell or barbell pieces are iron castings, and some iron castings are filled with lead materials to increase weight and reduce volume. In order to prevent the dumbbell or barbell from colliding with other objects when in use, a rubber protective layer is generally coated on the surface of the dumbbell or barbell. Iron cast dumbbell and barbell pieces are expensive in terms of material cost on the one hand. On the other hand, casting involves high temperature conditions, requires equipment such as a furnace to be built, is costly, and requires specialized personnel to operate.
The PE cement dumbbell piece comprises a blow molding shell and cement canned in the shell, and compared with the common iron casting dumbbell piece, the PE cement dumbbell piece has the advantages of greatly reducing cost, but being insufficient in that: 1. the volume of the dumbbell sheet is large relative to the iron casting dumbbell sheet; 2. the cost of the blow molding machine is still high; 3. the blow molding shell is easy to deform in the cooling and forming process, and the appearance of the product is influenced; 4. the shell canning holes affect the appearance of the product; 5. air holes are easy to form in the cement canning process, so that the gravity balance of the sheet body is reduced; 6. the canning hole needs to be a small hole which is easy to block, and is inconvenient for filling cement.
Disclosure of Invention
The invention aims to solve some problems of the existing dumbbell and barbell disc, and provides a novel dumbbell or barbell disc, which not only can greatly reduce the cost of product materials relative to an iron cast dumbbell disc, but also can keep better product appearance and smaller product volume relative to a PE cement dumbbell disc.
In order to achieve the above purpose, the invention adopts the following technical scheme: the assembled disc for dumbbell or barbell consists of casing and stuffing filled inside the casing, and features that the casing is metal casing and is filled with sand material. The shell consists of an upper cover, a lower shell and a core tube, wherein the lower shell comprises a bottom surface and a surrounding edge formed by bending upwards from the outer edge of the bottom surface, and the surrounding edge of the lower shell is bent inwards from the upper edge of the upper cover to form a folded edge to press the edge of the upper cover; the bottom surface of inferior valve constitutes the diapire of casing, and the surrounding edge of inferior valve constitutes the lateral wall of casing, the upper cover constitutes the roof of casing, the centre hole is established respectively at the center of upper cover and inferior valve, and the upper end and the lower extreme of core tube are connected with the centre hole of upper cover and inferior valve respectively.
The disc adopts sand as filler, which is not only beneficial to selecting low-cost filler and reducing the material cost of the product, but also beneficial to uniform filler through stamping compaction, can avoid internal air holes, can obtain larger density when the pressure is high enough, and is beneficial to ensuring the balance of the product and the relatively smaller product volume. The shell is divided into a lower shell and an upper cover, and necessary structural conditions are provided for packing and punching compaction of the packing before edge pressing encapsulation. Effectively solves the problem that air holes formed in PE cement dumbbell piece blow molding shells can not be treated when cement is canned in the blow molding shells.
The upper cover is pressed and fixed through the folded edge formed by inwards bending the peripheral edge of the lower shell, the volume of the lower shell can be designed to be equal to or larger than the volume before sand material compression, sand materials can be normally filled into the lower shell before compression, sand materials cannot overflow, and after the sand materials are pressed and compressed, the part of the peripheral edge of the lower shell, which is higher than the upper plane of the sand materials, is just used for being bent to form the folded edge.
Based on the structure, when the disc is assembled, the sand material can be subjected to the next step of edge pressing packaging only by simple one-time filling and one-time stamping, and no neutral space is left in the assembled shell. The sand is not needed to be filled after stamping, or other auxiliary devices or tools are used for ensuring that the sand with the volume larger than the shell capacity before compaction is not scattered outside the lower shell.
Further, the edge of the upper cover is lower than the part inside the edge of the upper cover, and the height difference between the edge of the upper cover and the part inside the edge of the upper cover is equal to or larger than the thickness of the folded edge at the upper edge of the lower shell.
Further, the edge width of the upper cover is greater than or equal to the width of the folded edge of the upper edge of the lower shell.
Further, the core tube height is equal to or less than the shell thickness.
Further, the central hole of the lower shell comprises a section of hole wall formed by upward stretching. When sand is filled, the upper end of the core tube with the height equal to or smaller than the thickness of the shell can be flush with the unfurled upper edge of the lower shell, but not lower than the unfurled upper edge of the lower shell. The problem that sand is difficult to fill can be solved, wherein the upper end of the core tube is lower than the upper edge of the lower shell, which is not folded.
Further, the central hole of the upper cover comprises a section of hole wall formed by stretching downwards.
Still further, the central hole department of upper cover establishes concave horn mouth, the central hole department of inferior valve establishes concave horn mouth. The upper and lower end nozzles of the core tube are flared into a flare shape that is adapted to the flare of the central holes of the upper cover and the lower shell.
Another object of the present invention is to provide an assembling method for the assembled disc for dumbbell or barbell, wherein the assembling method is characterized in that a non-folded lower shell and a straight core tube are taken, the lower end of the core tube is inserted into a central hole of the lower shell, and then sand is filled in the lower shell; compacting the filled sand by stamping; the upper cover is covered on the sand material, and the upper end of the core tube is inserted into the central hole of the upper cover; then, the edge of the upper cover is pressed by the inner flanging of the part, which is higher than the upper cover, of the peripheral edge of the lower shell from the upper part of the edge of the upper cover; and finally, expanding the upper end and the lower end of the core tube, and fixing the core tube with the upper shell and the lower shell.
Because of the precision, the outer diameter of the upper die of the stamping sand cannot be close to the inner diameter of the lower shell, and enough clearance needs to be reserved to prevent the upper die from being damaged by the lower shell during stamping. This results in the sand at the gap not being compacted or part of the sand being squeezed out of the gap during stamping. In order to solve the problem, the invention provides an improved method which can replace the assembly method, after sand filling is completed, an upper cover is covered, and then the sand is indirectly compacted by pressing the upper cover. The method comprises the following steps: taking a non-folded lower shell and a straight core tube, inserting the lower end of the core tube into a central hole of the lower shell, and then filling sand into the lower shell; the upper cover is covered on the sand material, and the upper end of the core tube is inserted into the central hole of the upper cover; compacting the filled sand by pressing the upper cover; then, the edge of the upper cover is pressed by the inner flanging of the part, which is higher than the upper cover, of the peripheral edge of the lower shell from the upper part of the edge of the upper cover; and finally, expanding the upper end and the lower end of the core tube, and fixing the core tube with the upper shell and the lower shell.
The invention has the beneficial effects that: the material of the disc itself is low in bulk; the shell processing and sand compaction can be completed by a simple mechanical device such as a punching machine, the equipment cost is low, and the processing condition requirement is low; the processing process does not need heating, the processing energy consumption is low, the processing process does not need working procedures such as cooling, solidification and the like which need waiting, and the processing efficiency is high.
Drawings
Fig. 1 is a schematic view showing an example structure of a disc according to the present invention.
FIG. 2 is a schematic diagram of an assembly process of a disk according to the present invention.
Marking: 1. an upper cover; 2. an upper cover edge; 3. a lower case; 4. folding edges; 5. surrounding edges; 6. a bottom surface; 7. a core tube; 8. sand materials; 9. the hole wall is covered; 10. a lower shell hole wall; 11. a horn mouth.
Detailed Description
The structural features of the technical scheme of the invention are further explained below with reference to the accompanying drawings.
As shown in fig. 1, the disc of the invention is composed of a shell and sand materials 8 filled in the shell, wherein the shell is a metal shell, the sand materials 8 are filled in the inner cavity of the shell, and the sand materials are compacted by stamping. The shell consists of an upper cover 1, a lower shell 3 and a core tube 7.
The upper cover 1 comprises a central hole and a section of upper cover hole wall 9 formed by stretching downwards at the central hole. The upper cover 1 forms a top wall of the shell, the upper cover edge 2 of the upper cover 1 is lower than the part inside the upper cover edge, and the height difference between the upper cover edge 2 and the part inside the upper cover edge 2 is equal to or larger than the thickness of the folded edge 4 on the upper edge 5 of the lower shell 3. The width of the upper cover edge 2 is larger than or equal to the width of the folded edge 4 of the upper edge of the lower shell 3.
The lower shell 3 comprises a bottom surface 6, a surrounding edge 5 formed by bending upwards from the outer edge of the bottom surface 6, a central hole and a section of lower shell hole wall 10 formed by stretching upwards at the central hole. The upper edge of the surrounding edge 5 of the lower shell 3 is bent inwards from the upper part of the upper cover edge 2 to form a folded edge 4 to press the upper cover edge 2. The bottom surface 6 of the lower shell 3 forms the bottom wall of the shell, and the peripheral edge 5 of the lower shell 3 forms the side wall of the shell. When sand is filled, the upper end of the core tube 7 having a height equal to or smaller than the thickness of the housing may be flush with the unfurled upper edge of the lower housing 3, instead of being lower than the unfurled upper edge of the lower housing 3. The problem that sand is difficult to fill can be solved, wherein the upper end of the core tube 7 is lower than the non-folded upper edge of the lower shell 3.
A concave horn mouth 11 is arranged at the central hole of the upper cover 1, and an upper concave horn mouth 11 is arranged at the central hole of the lower shell 3. The upper and lower end nozzles of the core tube 7 are flared into a bell mouth shape that is fitted to the bell mouth 11 of the center holes of the upper cover 1 and the lower case 3.
As shown in the figure 2 of the drawings,
step one, part processing: and respectively processing the lower shell, the upper cover and the core tube according to the design size and the process.
Secondly, filling sand materials: the lower end of the core pipe is inserted into the central hole of the lower shell, sand materials with fixed weight are filled in the annular groove cavity formed by surrounding edges of the lower shell, the bottom surface of the lower shell and the core pipe, and the sand materials with fixed weight are just filled or slightly lower than or slightly higher than the annular groove cavity under the premise that the sand materials are not spilled through the size design of the lower shell. And then covering the upper cover to form an assembled semi-finished product.
Thirdly, sand stamping: the assembled semi-finished product is horizontally placed on a stamping platform, an upper cover faces upwards, a core pipe and a positioning column are matched to position the product, a stamping upper die with a core pipe avoiding hole in the center is driven to apply pressure to the upper cover, the upper cover is pressed to downwards compact sand below the upper cover, the upper cover is lowered, the part of the upper edge of the surrounding edge of the lower shell, which is higher than the upper cover, is used as a pressing edge,
fourthly, edge pressing: and applying inward pressure to the peripheral edge of the lower shell from the outer side, so that part of the peripheral edge higher than the upper cover is inwards bent to form a folded edge, and pressing the edge of the upper cover from above.
Fifthly, fixing the core tube: synchronously or asynchronously, the upper end pipe orifice and the lower end pipe orifice of the core pipe are respectively expanded, so that the part of the end part of the core pipe corresponding to the upper cover or the lower shell bell mouth is outwards expanded to form a bell mouth which is matched with the upper cover or the lower shell bell mouth.
After the core tube is fixed, the basic processing of the disc is finished, and the saleable finished product can be formed after the subsequent processing and decoration of the appearance such as spraying on the surface of the disc.
Claims (7)
1. The assembled disc for the dumbbell or the barbell consists of a shell and a filler filled in the shell, and is characterized in that the shell is a metal shell, the filler is filled in an inner cavity of the shell, and the filler is a sand material which is compacted by stamping; the shell consists of an upper cover, a lower shell and a core tube, wherein the lower shell comprises a bottom surface and a surrounding edge formed by bending upwards from the outer edge of the bottom surface, and the surrounding edge of the lower shell is bent inwards from the upper edge of the upper cover to form a folded edge to press the edge of the upper cover; the bottom surface of the lower shell forms the bottom wall of the shell, the surrounding edge of the lower shell forms the side wall of the shell, the upper cover forms the top wall of the shell, the centers of the upper cover and the lower shell are respectively provided with a center hole, and the upper end and the lower end of the core tube are respectively connected with the center holes of the upper cover and the lower shell; the edge width of the upper cover is larger than or equal to the width of the folded edge of the upper edge of the lower shell; the height of the core tube is equal to or less than the thickness of the shell.
2. The assembled disc for a dumbbell or barbell of claim 1, wherein the edge of the upper cover is lower than the portion inside the edge of the upper cover, and the difference in height between the edge of the upper cover and the portion inside the edge of the upper cover is equal to or greater than the thickness of the flange on the upper edge of the lower case.
3. The assembled disc for a dumbbell or barbell of claim 1, wherein the central hole of the lower case includes a hole wall that is formed by stretching upward.
4. The assembled disc for a dumbbell or barbell of claim 1, wherein the central hole of the upper cover comprises a hole wall that is formed by stretching downward.
5. The assembled disc for dumbbell or barbell of claim 1, wherein a concave bell mouth is provided at a central hole of the upper cover, and an upward concave bell mouth is provided at a central hole of the lower case; the upper and lower end nozzles of the core tube are flared into a flare shape which is adapted to the flare of the central holes of the upper cover and the lower shell.
6. The assembling method of assembled disc as claimed in claim 5, wherein the lower casing and the straight core pipe are not folded, the lower end of the core pipe is inserted into the central hole of the lower casing, and then sand is filled in the lower casing; compacting the filled sand by stamping; the upper cover is covered on the sand material, and the upper end of the core tube is inserted into the central hole of the upper cover; then, the edge of the upper cover is pressed by the inner flanging of the part, which is higher than the upper cover, of the peripheral edge of the lower shell from the upper part of the edge of the upper cover; and finally, expanding the upper end and the lower end of the core tube, and fixing the core tube with the upper shell and the lower shell.
7. The assembling method of assembled disc as claimed in claim 5, wherein the lower casing and the straight core pipe are not folded, the lower end of the core pipe is inserted into the central hole of the lower casing, and then sand is filled in the lower casing; the upper cover is covered on the sand material, and the upper end of the core tube is inserted into the central hole of the upper cover; compacting the filled sand by pressing the upper cover; then, the edge of the upper cover is pressed by the inner flanging of the part, which is higher than the upper cover, of the peripheral edge of the lower shell from the upper part of the edge of the upper cover; and finally, expanding the upper end and the lower end of the core tube, and fixing the core tube with the upper shell and the lower shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811174997.7A CN109248397B (en) | 2018-10-09 | 2018-10-09 | Assembled disc for dumbbell or barbell and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811174997.7A CN109248397B (en) | 2018-10-09 | 2018-10-09 | Assembled disc for dumbbell or barbell and assembling method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109248397A CN109248397A (en) | 2019-01-22 |
| CN109248397B true CN109248397B (en) | 2023-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811174997.7A Active CN109248397B (en) | 2018-10-09 | 2018-10-09 | Assembled disc for dumbbell or barbell and assembling method thereof |
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| Country | Link |
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| CN (1) | CN109248397B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111921155A (en) * | 2020-07-14 | 2020-11-13 | 余姚市力仕体育用品有限公司 | Dumbbell disc |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201260866Y (en) * | 2008-08-26 | 2009-06-24 | 孟晖 | Dumbbell filled with filler in out case |
| CN101966378A (en) * | 2010-10-18 | 2011-02-09 | 杨旭 | Novel disk |
| CN202459961U (en) * | 2012-02-29 | 2012-10-03 | 王志 | Barbell plate |
| CN209475472U (en) * | 2018-10-09 | 2019-10-11 | 江山市泓睦体育用品有限公司 | It is a kind of for dumbbell or the assembly type disc of barbell |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100495274B1 (en) * | 2005-01-10 | 2005-06-14 | 주식회사 베스타 | Impact absorption possible dumbbell and barbell disk |
| US9079070B2 (en) * | 2011-12-19 | 2015-07-14 | Cap Barbell, Inc. | Soft kettlebell |
-
2018
- 2018-10-09 CN CN201811174997.7A patent/CN109248397B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201260866Y (en) * | 2008-08-26 | 2009-06-24 | 孟晖 | Dumbbell filled with filler in out case |
| CN101966378A (en) * | 2010-10-18 | 2011-02-09 | 杨旭 | Novel disk |
| CN202459961U (en) * | 2012-02-29 | 2012-10-03 | 王志 | Barbell plate |
| CN209475472U (en) * | 2018-10-09 | 2019-10-11 | 江山市泓睦体育用品有限公司 | It is a kind of for dumbbell or the assembly type disc of barbell |
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| Publication number | Publication date |
|---|---|
| CN109248397A (en) | 2019-01-22 |
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