Assembly structure of roller for driving running platform and running belt

Abstract

The utility model relates to the field of treadmills, and discloses an assembly structure of a roller for driving a treadmill and a running belt, which comprises a treadmill underframe made of plastics and an assembly block used for assembling and fixing a limiting bolt of a fixed shaft, the assembly block is made of high-strength materials, and the assembly block is detachably fixed on the treadmill underframe through a locking bolt. The rear end covers capable of shielding or exposing the assembly blocks are clamped and limited at the rear ends of the two sides of the treadmill bottom frame, the protective splicing blocks spliced with the rear end covers and the treadmill bottom frame are in threaded connection with the treadmill bottom frame, and the assembly structure is improved in protective performance, low in replacement cost and capable of meeting the requirement for light weight.

Description

Technical Field

[0001] This utility model relates to the field of treadmills, and more particularly to an assembly structure of a running platform and a roller for driving the running belt. Background Technology

[0002] The treadmill running platform includes a running platform base frame, a drive roller and a driven roller rotating at the front and rear ends of the running platform base frame, and a running belt wound around the drive roller and the driven roller. The front end of the running platform base frame has a recessed chamber, and a drive motor for driving the drive roller to rotate is installed in the chamber. The connection structure between the drive roller and the driven roller and the running platform base frame is the same. For details, please refer to the novel treadmill track anti-lateral slip structure disclosed in Chinese Patent No. CN212141303U. The patent describes that the driven roller is assembled on the bottom fixed frame by a U-shaped bracket. The driven roller is rotatably set on a fixed shaft. A bolt is vertically screwed to both ends of the fixed shaft. The bolt is inserted into the U-shaped bracket and locked with a nut. The existing U-shaped bracket and running platform base are both made of metal and are fixed by welding. However, with the increasing demand for lightweight treadmills, some treadmills have replaced the original metal with plastic for the running platform base. The U-shaped bracket, which is made of the same material, needs to withstand the force transmitted to it by the friction between the rollers (drive roller and driven roller) and the fixed shaft during the use of the treadmill. The brittleness and strength of plastic make it easy to crack after a period of use, which requires replacing the entire bottom fixing frame, which is too costly. Utility Model Content

[0003] This utility model addresses the drawback of lightweight treadmills, where the assembly blocks (U-shaped brackets) are easily damaged, requiring the entire treadmill base to be replaced along with the bracket, resulting in excessive replacement costs. It provides an assembly structure for the treadmill and the rollers for the treadmill belt drive that meets the requirements of lightweight design while reducing replacement costs.

[0004] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0005] An assembly structure for a treadmill and a roller for treadmill belt drive includes a treadmill base frame made of plastic and an assembly block for assembling and fixing a limiting bolt with a fixed shaft. The assembly block is made of high-strength material and is detachably fixed to the treadmill base frame by locking bolts.

[0006] The above solution uses plastic material for the treadmill base, which is lighter than the existing metal material. The assembly blocks are made of metal, which significantly improves strength and resistance to deformation. The assembly blocks are locked to the treadmill base with locking bolts. Compared with a single metal material, this method is lighter, and compared with a single plastic material, it is lighter while reducing the frequency and cost of replacement.

[0007] Preferably, each of the four corners of the assembly block is provided with a through threaded groove, and the locking bolt is inserted from the bottom of the assembly groove and locked with the threaded groove.

[0008] Using the above solution, all four corners of the assembly block are fixed to the base frame of the running platform with locking bolts, ensuring a firm and stable assembly.

[0009] Preferably, each of the rear ends of both sides of the treadmill base has a recessed assembly groove for accommodating the assembly block, and the treadmill base has a snap-fit ​​limiter for covering or exposing the assembly block.

[0010] Using the above solution, the assembly block can be completely hidden after the rear cover and the running platform base are assembled, resulting in a more aesthetically pleasing appearance.

[0011] Preferably, the rear end cover is L-shaped, with two vertically arranged ends of the rear end cover having horizontally protruding inserts, and the base of the running platform having recessed slots for horizontal insertion of the inserts, and a locking screw that passes through the rear end cover and is screwed onto the assembly block.

[0012] Using the above scheme, the rear end cover and the running platform base are connected by a plug-in joint, and then locked with the assembly block by locking screws.

[0013] Preferably, a protective block is screwed onto the treadmill base frame to connect with the rear end cover and the treadmill base frame. The protective block is located in the gap between the treadmill belt and the two sides of the treadmill base frame and fills the gap between the driven roller sidewall and the treadmill base frame.

[0014] With the above solution, there are assembly gaps between the running belt and the two sides of the running platform base, and there are assembly gaps between the side wall of the driven roller and the running platform base. After the protective blocks are installed, they can cover and fill the gaps exposed in the field of vision, preventing children from accidentally touching them and getting their fingers caught in the gaps.

[0015] Preferably, the assembly includes an assembly extension block that extends into the assembly slot and simultaneously assembles with the treadmill base and the rear end cover, a filling block that fills the gap between the driven roller sidewall and the treadmill base, and a locking extension block that is fixed to the treadmill base by fastening screws.

[0016] Preferably, the bottom and sidewalls of the splicing extension block are respectively recessed with a first splicing groove and a second splicing groove, the base of the running platform is vertically protruding with a first splicing block that engages with the first splicing groove, and the rear end cover is protruding with a second splicing block that engages with the second splicing groove.

[0017] Using the above scheme, the filler block is used to fill the assembly gap, and the splicing extension block is spliced ​​with the rear end cover and the running platform base frame. Then, the locking extension block is used to fix the running platform base frame to further increase the firmness of the connection of the rear end cover.

[0018] Preferably, the assembly block is made of carbon fiber, metal, or PPS.

[0019] This utility model has significant technical effects due to the adoption of the above technical solutions: the base frame of the running platform is made of lightweight plastic, and the assembly blocks are made of high-strength metal, carbon fiber, or PPS. The two are fixedly assembled by locking bolts, which reduces the overall weight of the machine while ensuring the strength of the assembly blocks, thus delaying the replacement frequency of the assembly blocks and reducing replacement costs; the design of protective blocks reduces the risk of children's hands getting caught and improves the stability and firmness of the rear cover installation. Attached Figure Description

[0020] Figure 1 This is a partial schematic diagram of the running platform in this embodiment without the driven rollers installed;

[0021] Figure 2 This is a partial schematic diagram of the running board with the driven rollers assembled in this embodiment;

[0022] Figure 3 This is a partial schematic diagram of the running board assembly with driven rollers and running belt in this embodiment;

[0023] Figure 4 This is an isometric view of the rear end cover in this embodiment;

[0024] Figure 5 This is an isometric view of the protective module in this embodiment.

[0025] The parts referred to by the numbers in the above attached diagrams are as follows: 1. Running board base frame; 101. Assembly slot; 102. Slot; 103. First assembly block; 104. Groove; 2. Rear end cover; 201. Insert block; 202. Second assembly block; 3. Assembly block; 4. Fixed shaft; 5. Driven roller; 6. Limit bolt; 7. Locking screw; 8. Locking bolt; 9. Protective assembly block; 901. Splicing extension block; 9011. First splicing slot; 9012. Second splicing slot; 902. Filling block; 903. Locking extension block; 10. Running belt. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0027] An assembly structure for a running track and a roller for driving the running belt, referring to Figures 1-5As shown, the device includes an ABS-made treadmill base frame 1 and an assembly block 3 that is detachably fixed to the treadmill base frame 1 and used to fix the fixed shaft 4. The driving roller and the driven roller 5 each rotate on a fixed shaft 4. The two ends of the fixed shaft 4 are respectively inserted into and limited on an assembly block 3. Since the driven roller 5 is located at the rear ends of both sides of the treadmill base frame 1, in addition to the same assembly structure as the driving roller, a rear end cover 2 also needs to be provided. Therefore, the following description uses the assembly structure of the driven roller 5, the assembly block 3 and the treadmill base frame 1 as an example. The assembly of the driving roller can refer to the assembly of the driven roller 5.

[0028] The assembly block 3 is made of aluminum alloy. The rear ends of both sides of the treadmill base frame 1 have assembly grooves 101 for accommodating the assembly block 3. The driven roller 5 rotates on the fixed shaft 4. The driven roller 5 extends from both ends of the fixed shaft 4 and each end is vertically screwed with a limiting bolt 6. The side of the assembly block 3 facing the fixed shaft 4 has a recessed clearance groove for partial insertion of the fixed shaft 4. The rear end cover 2 of the treadmill base frame 1 is snapped on and limited to cover or expose the assembly block 3.

[0029] Each of the four corners of the assembly block 3 is vertically provided with a through threaded groove, and the locking bolt 8 is inserted from the bottom of the assembly groove 101 and locked with the threaded groove.

[0030] The rear end cover 2 is L-shaped. The two ends of the vertically arranged rear end cover 2 are horizontally protruding with insert blocks 201. The base frame 1 of the running platform is recessed with slots 102 for horizontal insertion of insert blocks 201. The rear end cover 2 has two through holes distributed vertically. The two ends of the limiting bolt 6 pass through the two sides of the assembly block 3 and extend to the outside of the rear end cover 2 and the end of the assembly groove 101 away from the rear end cover 2, respectively. A locking screw 7 is inserted into the through hole below the rear end cover 2 and screwed to the assembly block 3.

[0031] A protective assembly block 9 is screwed onto the treadmill base frame 1 and spliced ​​with the rear end cover 2 and the treadmill base frame 1. The assembly block includes a splicing extension block 901 that extends into the assembly groove 101 and splices with both the treadmill base frame 1 and the rear end cover 2, a filling block 902 that fills the gap between the side wall of the driven roller 5 and the treadmill base frame 1, and a locking extension block 903 that is fixed to the treadmill base frame 1 by fastening screws. The bottom and side wall of the splicing extension block 901 are respectively recessed with a first splicing groove 9011 and a second splicing groove 9012. The treadmill base frame 1 is vertically protruding with a first assembly block 103 that splices with the first splicing groove 9011. The rear end cover 2 is protruding with a second assembly block 202 that splices with the second splicing groove 9012. The treadmill base frame 1 is recessed with a groove 104 into which the locking extension block 903 can be inserted. The fastening screw passes through the locking extension block 903 and is screwed into the threaded hole at the bottom of the groove 104.

[0032] In the above scheme, the base frame 1 of the running platform is made of lightweight ABS plastic, and the assembly block 3 is made of aluminum alloy. The two are fixedly assembled by locking bolts 8. While reducing the overall weight of the machine, the strength of the assembly block 3 is guaranteed, which can delay the replacement frequency of the assembly block 3 and reduce the replacement cost (only the assembly block 3 needs to be replaced). The protective assembly block 9 is designed to reduce the risk of children's hands getting caught and to improve the stability and firmness of the rear cover 2 installation.

[0033] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An assembly structure for a treadmill and a roller for driving a treadmill belt, comprising a treadmill base frame (1) made of plastic and an assembly block (3) for assembling and fixing a limiting bolt (6) to which a fixed shaft (4) is fixed, characterized in that: The assembly block (3) is made of high-strength material and is detachably fixed to the base frame (1) of the running platform by locking bolts (8).

2. The assembly structure of the running platform and the roller for the running belt drive according to claim 1, characterized in that: Each of the four corners of the assembly block (3) is vertically provided with a through threaded groove, and the locking bolt (8) is inserted from the bottom of the assembly groove (101) and locked with the threaded groove.

3. The assembly structure of a running track and a roller for driving a running belt according to claim 1 or 2, characterized in that: The rear ends of both sides of the running table base (1) are recessed with assembly grooves (101) for accommodating assembly blocks (3), and the running table base (1) is fitted with a rear end cover (2) for covering or exposing the assembly blocks (3).

4. The assembly structure of the running platform and the roller for driving the running belt according to claim 3, characterized in that: The rear end cover (2) is L-shaped. The two ends of the vertically set rear end cover (2) are horizontally protruding with inserts (201). The base frame (1) of the running platform has a recessed slot (102) for the inserts (201) to be horizontally inserted. The rear end cover (2) has a locking screw (7) that passes through it and is screwed to the assembly block (3).

5. The assembly structure of the running platform and the roller for driving the running belt according to claim 4, characterized in that: A protective block (9) is screwed onto the treadmill base frame (1) and spliced ​​with the rear end cover (2) and the treadmill base frame (1). The protective block (9) is located in the gap between the running belt (10) and the two sides of the treadmill base frame (1) and fills the gap between the side wall of the driven roller (5) and the treadmill base frame (1).

6. The assembly structure of the running platform and the roller for driving the running belt according to claim 5, characterized in that: The assembly includes a splicing extension block (901) that extends into the assembly slot (101) and simultaneously splices with the treadmill base (1) and the rear end cover (2), a filling block (902) that fills the gap between the side wall of the driven roller (5) and the treadmill base (1), and a locking extension block (903) that is fixed to the treadmill base (1) by fastening screws.

7. The assembly structure of a running track and a roller for driving a running belt according to claim 6, characterized in that: The bottom and sidewall of the splicing extension block (901) are respectively recessed with a first splicing groove (9011) and a second splicing groove (9012). The platform base (1) is vertically protruding with a first splicing block (103) that is spliced ​​with the first splicing groove (9011). The rear end cover (2) is protruding with a second splicing block (202) that is spliced ​​with the second splicing groove (9012).

8. The assembly structure of the running platform and the roller for driving the running belt according to claim 1, characterized in that: The assembly block (3) is made of carbon fiber, metal or PPS.

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