Walking/treadmill with integrated base and manufacturing method for the integrated base

Abstract

A walking/treadmill with an integrated base and a manufacturing method for the integrated base are provided. The walking/treadmill with an integrated base includes an integrated base, a running board, a running belt, a motor, an electric control, and a drum. The integrated base is provided with an installation part configured to install the running board, the running belt, the motor, the electric control, and the drum. The base includes a transverse beam, a longitudinal beam, and an installation cavity shell provided between the transverse beam and the longitudinal beam. The transverse beam, the longitudinal beam, and the installation cavity shell are all made of reinforced plastic and are integrally injection molded. The present disclosure has advantages of simple production, high structural strength, and overall lightweight, thereby reducing logistics costs.

Claims

1. A walking/treadmill with an integrated base, comprising an integrated base, a running board, a running belt, a motor, an electric control, and a drum; wherein the running board, the running belt, the motor, the electric control, and the drum are installed in the integrated base; the base comprises a transverse beam, a longitudinal beam, and an installation cavity shell provided between the transverse beam and the longitudinal beam; the longitudinal beam and the installation cavity shell are both made of reinforced plastic with a predetermined mixing ratio and are injection molded; wherein the longitudinal beam is wrapped with a metal reinforcement member that is extended along a length direction of the longitudinal beam; wherein the metal reinforcement member is provided with a plurality of through holes that are spaced along a length direction of the metal reinforcement member and penetrate a wall of the metal reinforcement member; the metal reinforcement member is provided with a plurality of convex strips or protrusions that are concave inward from one side of the wall of the metal reinforcement member and convex outward from the other side thereof.

2. The walking/treadmill with an integrated base according to claim 1, wherein the reinforced plastic comprises polypropylene and glass fiber, or polyamide-6 and glass fiber, or polyamide-66 and glass fiber; the glass fiber comprises continuous glass fiber and staple glass fiber.

3. The walking/treadmill with an integrated base according to claim 2, wherein the reinforced plastic with a predetermined mixing ratio refers to a weight percentage of the glass fiber is more than or equal to 15%, and the reinforced plastic has at least one of the following characteristics: a tensile strength of the reinforced plastic measured according to a tensile performance testing method for plastics is greater than or equal to 50 Mpa; a bending strength of the reinforced plastic measured according to a bending performance testing method for plastics is greater than or equal to 80 Mpa; a notch impact strength of a cantilever beam of the reinforced plastic measured according to an Izod impact strength testing method for plastics is greater than or equal to 8 KJ/m.sup.2.

4. The walking/treadmill with an integrated base according to claim 1, wherein the reinforced plastic comprises polyolefin and reinforcing filler, or polyamide and reinforcing filler; wherein the reinforcing filler comprises one or more of a group of glass fiber, talc powder, calcium carbonate, barium sulfate, wollastonite, and whiskers.

5. The walking/treadmill with an integrated base according to claim 4, wherein the reinforced plastic with a predetermined mixing ratio refers to a weight percentage of the reinforcing filler is more than or equal to 5%, and the reinforced plastic has at least one of the following characteristics: a bending strength of the reinforced plastic measured according to a bending performance testing method for plastics is greater than or equal to 25 Mpa; a notch impact strength of a cantilever beam of the reinforced plastic measured according to an Izod impact strength testing method for plastics is greater than or equal to 3 KJ/m.sup.2.

6. The walking/treadmill with an integrated base according to claim 1, wherein the reinforced plastic comprises acrylonitrile-butadiene-styrene copolymer, or acrylonitrile-butadiene-styrene copolymer and polycarbonate; wherein the reinforced plastic with a predetermined mixing ratio using a mixture of the acrylonitrile-butadiene-styrene copolymer and the polycarbonate refers to a weight proportion of the polycarbonate is more than or equal to 30%, and the reinforced plastic has at least one of the following characteristics: a tensile strength of the reinforced plastic measured according to a tensile performance testing method for plastics is greater than or equal to 50 Mpa, a bending strength of the reinforced plastic measured according to a bending performance testing method for plastics is greater than or equal to 70 Mpa; a charpy notch impact strength of the reinforced plastic measured according to an impact resistance testing method for plastics is greater than or equal to 30 KJ/m.sup.2.

7. The walking/treadmill with an integrated base according to claim 1, wherein the longitudinal beam and the transverse beam are both provided with reinforcing ribs that are formed with the transverse beam and the longitudinal beam, wherein the longitudinal beam and the transverse beam are injection molded with the same reinforcing plastic.

8. A manufacturing method for the integrated base according to claim 1, comprising the following steps: S1: mixing and heating the reinforced plastic according to proportions and performing a granulation treatment with a granulator; S2: heating and melting plastic particles and injecting them into a locked injection die by an injection molding machine; S3: after completing the injecting of the plastic particles, maintaining a pressure; S4: cooling the injection die to solidify a melt within a mould cavity of the injection die into the base; S5: after cooling to room temperature, opening the injection die and demolding the base.

9. The manufacturing method for the integrated base according to claim 8, wherein in step S2, before injecting plastic particles into an injection die by an injection molding machine, the metal reinforcement member is placed in the mould cavity of the injection die corresponding to the transverse beam.

Description

BRIEF DESCRIPTION OF DRAWINGS

(1) FIG. 1 is a schematic structural diagram of the present disclosure.

(2) FIG. 2 is an exploded view of FIG. 1.

(3) FIG. 3 is a schematic structural diagram after removing a cover shell and a running belt.

(4) FIG. 4 is a schematic structural diagram of a base.

(5) FIG. 5 is a schematic structural diagram below the base.

(6) FIG. 6 is a schematic structural diagram of the base and a metal reinforcement member.

(7) FIG. 7 is a schematic structural diagram of the metal reinforcement member.

(8) FIG. 8 is an enlarged view of a reinforcing rib at a longitudinal beam.

(9) FIG. 9 is an enlarged view of a reinforcing rib at a transverse beam.

(10) FIG. 10 shows testing data for mixed materials of PP and GF.

(11) FIG. 11 shows the testing data for mixed materials of PP and GF.

(12) FIG. 12 shows testing data for mixed materials of PA6 and GF.

(13) FIG. 13 shows the testing data for mixed materials of PA6 and GF.

(14) FIG. 14 shows testing data for mixed materials of ABS and PC.

(15) FIG. 15 shows testing data for mixed materials.

NUMERAL REFERENCE

(16) 1base; 11longitudinal beam; 12transverse beam; 13installation cavity shell; 21cover shell; 22running belt; 23side board; 24running board; 25drum; 26. motor; 27electric control; 3metal reinforcement member; 31through hole; 32convex strip; 33protrusion; 4reinforcing rib.

DESCRIPTION OF EMBODIMENTS

(17) The present disclosure will be further described based on the accompanying drawings and specific embodiments.

Example 1

(18) As shown in FIGS. 1 to 8, Example 1 discloses a walking/treadmill with an integrated base 1, which includes a running board 24, a running belt 22, a motor 26, an electric control 27, and a drum 25. The integrated base 1 is provided with an installation part configured to install the running board 24, the running belt 22, the motor 26, the electric control 27, and the drum 25. The base 1 includes a transverse beam 12, a longitudinal beam 11, and an installation cavity shell 13 provided between the transverse beam 12 and the longitudinal beam 11. A cover shell 21 is provided above the installation cavity shell 13. The transverse beam 12, the longitudinal beam 11, and installation cavity shell 13 are all made of reinforced plastic and are integrally injection molded. A position of the installation cavity shell 13 is used to install the motor 26 and the electronic control 27; the drum 25 is provided on two sides of the longitudinal beam 11 in a length direction; the running board 24 and the running belt 22 are provided between the longitudinal beam 11 and located above the transverse beam 12. There is also a side board 23 on the longitudinal beam 11. The longitudinal beam 11 and the transverse beam 12 are arranged vertically, and the longitudinal beam 11 is wrapped with a metal reinforcement member 3 extending along a length direction of the longitudinal beam 11. The metal reinforcement member 3 is made of iron material. The metal reinforcement member 3 is provided with a plurality of through holes 31 that are spaced along its length and penetrate a wall of the metal reinforcement member 3. The metal reinforcement member 3 is provided with a convex strip 32 or a protrusion 33 that is concave inward from one side of the wall of the metal reinforcement member 3 and protruded outward from the other side thereof. The number of the protrusion 33 is two; the number of the convex strip 32 is one and the convex strip 32 is extended along the length direction of the metal reinforcement member 3. The transverse beam 12 and the longitudinal beam 11 are both densely covered with reinforcing ribs 4 along longitudinal directions, which are X-shaped and connected to each other. The reinforcing ribs 4 are injection molded together with the transverse beam 12 and the longitudinal beam 11.

(19) The reinforced plastic for the base 1 is a mixture of polypropylene (PP) and glass fiber (GF). The glass fiber is composed of continuous glass fiber and staple glass fiber; a weight percentage of the glass fiber is 15% to 35% of a total a weight percentage of the reinforced plastic and a weight percentage of the polypropylene is 65% to 85% of the total weight percentage of the reinforced plastic. The following table shows characteristics of materials produced of polypropylene (PP) and glass fiber (GF) in different ratios.

(20) TABLE-US-00001 TABLE 1 Testing Test 85% PP + 80% PP + 75% PP + 65% PP + Test items standard condition Unit 15% GF 20% GF 25% GF 35% GF Tensile strength ISO 527 10 mm/min MPa 52 66 80 95 Tensile Strain at ISO 527 10 mm/min % 5 5 5 5 Break Flexural Strength ISO 178 2 mm/min MPa 80 95 115 140 Flexural Modulus ISO 178 2 mm/min MPa 3000 4200 4700 6000 Izod Notched ISO 180 Normal kJ/m.sup.2 12 13 13 17 Impact Strength temperature 23 C. Density ISO 1183 g/cm.sup.3 1.00 1.04 1.09 1.18 Melt Flow Rate ISO 1133 230 C./ g/10 min 15 13 10 8 2.16 KG

Example 2

(21) A difference between Example 2 and Example 1 is that the reinforced plastic is a mixture of polyamide-6 (PA6) or polyamide-66 (PA66) and glass fiber (GF). The glass fiber is composed of continuous glass fiber and staple glass fiber, and a weight percentage of the glass fiber in the total weight percentage of the reinforced plastic is 15% to 35%, and a weight percentage of the polyamide-6 or polyamide-66 in the total weight percentage of the reinforced plastic is 65% to 85%. The following table shows the characteristics of materials produced by polyamide-6 (PA6) and glass fiber (GF) in different ratios.

(22) TABLE-US-00002 TABLE 2 Testing Test 85% PA6 + 70% PA6 + 50% PA6 + Test items standard Unit condition 15% GF 30% GF 50% GF Tensile strength ISO 527 MPa 10 mm/min 130 170 205 Tensile Strain at ISO 527 % 10 mm/min 3.4 3.2 2.2 Break Flexural Strength ISO 178 MPa 2 mm/min 190 250 300 Flexural Modulus ISO 178 MPa 2 mm/min 5200 8200 12500 Izod Notched Impact ISO 180 kJ/m.sup.2 23 C. 8 16 20 Strength Density ISO 1183 g/cm3 1.23 1.36 1.55

Example 3

(23) A difference between Example 3 and Example 1 is that the reinforced plastic is a mixture of acrylonitrile-butadiene-styrene copolymer (ABS) and polycarbonate (PC), a weight percentage of the polycarbonate is 30% to 40% of the total weight percentage of the reinforced plastic and a weight percentage of the acrylonitrile-butadiene-styrene copolymer is 60% to 70% of the total weight percentage of the reinforced plastic. The following table shows characteristics of materials produced by acrylonitrile butadiene styrene copolymer (ABS) and polycarbonate (PC) in different ratios.

(24) TABLE-US-00003 TABLE 3 Testing Test 70% ABS + 60% ABS + 40% ABS + 30% ABS + Test items standard Unit condition 30% PC 40% PC 60% PC 70% PC Tensile strength ISO 527 MPa 50 mm/min 50 51 53 55 Flexural Strength ISO 178 MPa 2 mm/min 75 82 84 87 Flexural modulus ISO 178 MPa 2 mm/min 2200 2300 2300 2300 Charpy Notched ISO kJ/m.sup.2 23 C. 30 50 55 55 Impact Strength 179/1eA Rockwell ISO R- 105 110 120 125 hardness 2039-2 Scale Density ISO 1183 g/cm.sup.3 1.08 1.1 1.12 1.14

Example 4

(25) A difference between Example 4 and Example 1 is that the reinforced plastic is acrylonitrile-butadiene-styrene copolymer.

Example 5

(26) A difference between Example 5 and Example 1 is that the reinforced plastic is a mixture of polyolefin and reinforcing filler in a predetermined ratio, or polyamide and reinforcing filler mixed in a predetermined ratio. The reinforcing filler includes glass fiber, talc powder, calcium carbonate, barium sulfate, wollastonite, and whiskers. A weight percentage of the reinforcing filler is greater than or equal to 5%, and the bending strength of this reinforced plastic measured according to a bending performance testing method for plastics is greater than or equal to 25 Mpa; the notch impact strength of a cantilever beam measured according to an Izod impact strength testing method for plastics is greater than or equal to 3 KJ/m.sup.2.

(27) A manufacturing method for the integrated base 1, including the following sequential steps: S1: mixing and heating the reinforced plastic according to proportions and performing a granulation treatment with a granulator to cause the reinforced plastic into granules; S2: placing the metal reinforcement member 3 in a mould cavity of an injection die corresponding to the transverse beam 11, and then heating and melting plastic particles and injecting them into a locked injection die by an injection molding machine; S3: after completing the injecting of the plastic particles, maintaining a pressure; S4: cooling the injection die to solidify a melt within the mould cavity of the injection die into the base 1; S5: after cooling to room temperature, opening the injection die and demolding the base 1.