Lifting motor

Abstract

The utility model discloses a lifting motor which comprises a motor, a transmission case, a lifting assembly and a lifting assembly. The transmission case is arranged at one end of the motor shell; two supporting frames are arranged on the side wall of the transmission box. Positioning holes are formed in the two supporting frames, and a plurality of receding grooves are formed in the side walls of the positioning holes; the lifting assembly comprises two bearings, a transmission shaft, transmission teeth and a lead screw. The two bearings are positioned and arranged in the two positioning holes respectively, and the receding grooves are formed in the peripheries of the bearings in a surrounding mode; the transmission shaft rotationally penetrates through the two bearings; the transmission gear is arranged on the outer side of the transmission shaft, and the transmission gear is rotationally arranged between the two bearings and is in transmission connection with the driving end of the motor; the lead screw is arranged at the top of the transmission shaft; the lifting assembly comprises a lifting sleeve and an inner pipe; the lifting sleeve sleeves the outer side of the lead screw in a threaded transmission manner; the inner pipe is arranged on the outer side of the lifting sleeve. The structural strength of the lifting part can be improved, and meanwhile the noise reduction performance of the transmission structure can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor equipment technical field, concretely relates to a lift motor. BACKGROUND

[0002] The lift motor is provided with a lead screw at the front end of the motor, and an inner tube is sleeved on the outer side of the lead screw. When the lead screw rotates radially, the inner tube moves axially on the lead screw to drive a certain object to move upward. For example, the running track of a treadmill has an angle adjustment function to simulate a slope scene. The driving mode is to connect the lift motor between the base and the running track of the treadmill. The motor drives the lead screw to drive the inner tube to extend or retract. The end of the inner tube has a connecting ear for connecting with the running track to control the lifting of the running track.

[0003] The transmission structure between the motor and the inner tube of the existing lift motor is prone to noise, which requires noise reduction treatment. In addition, the lift transmission structure needs to withstand a certain pressure, so the structural strength of the transmission structure needs to be improved. UTILITY MODEL CONTENTS

[0004] The utility model provides a lift motor to solve the above technical problems.

[0005] The utility model adopts the following solutions to achieve the technical effects:

[0006] A lift motor, comprising a motor, a transmission box, a lifting assembly and a lifting assembly; the transmission box is arranged at one end of the motor shell; the side wall of the transmission box is provided with two support frames; the two support frames are provided with positioning holes, and the side wall of the positioning hole is provided with a plurality of air avoidance grooves; the lifting assembly comprises two bearings, a transmission shaft, a transmission gear and a lead screw; the two bearings are positioned and arranged in the two positioning holes respectively, and the air avoidance groove is arranged around the bearing; the transmission shaft rotates through the two bearings; the transmission gear is arranged on the outer side of the transmission shaft, and the transmission gear is rotatably arranged between the two bearings and is in transmission connection with the driving end of the motor; the lead screw is arranged at the top of the transmission shaft; the lifting assembly comprises a lifting sleeve and an inner tube; the lifting sleeve is threadedly sleeved on the outer side of the lead screw; and the inner tube is arranged on the outer side of the lifting sleeve.

[0007] Preferably, the top of the support frame is provided with a sound absorption cavity; and the sound absorption cavity is located on the outer side of the positioning hole.

[0008] Preferably, the top of the support frame is provided with a sound absorption cavity; and the sound absorption cavity is located on the outer side of the positioning hole.

[0009] Preferably, the lifting assembly further comprises an outer tube; the outer tube is sleeved outside the inner tube, and the bottom of the outer tube is inserted into the sound absorption ring groove.

[0010] Preferably, the outer side of the lifting sleeve is provided with a plurality of hollow grooves; the reinforcing rib structure is formed between the plurality of hollow grooves.

[0011] Preferably, the transmission box comprises a fixed box cover and a disassembled box cover; the fixed box cover is integrally connected with the shell of the motor; the disassembled box cover is mounted and connected with the fixed box cover through a first bolt.

[0012] Preferably, the end of the motor is provided with a motor rear cover; the disassembled box cover is mounted and connected with the fixed box cover through a second bolt, and the disassembled box cover is fixedly connected with the motor rear cover through the second bolt.

[0013] The utility model discloses the beneficial effect is: through the support frame to support bearing and transmission tooth, strengthen the support intensity of lifting assembly bottom, the periphery of support frame is provided with the avoidance slot, can play the sound absorption shock absorption noise reduction function. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The utility model discloses a whole schematic diagram of lifting motor for the embodiment of the utility model;

[0015] Figure 2 The utility model discloses a transmission tooth schematic diagram for the embodiment of the utility model;

[0016] Figure 3 The utility model discloses a lifting sleeve schematic diagram for the embodiment of the utility model;

[0017] Figure 4 The utility model discloses a bearing and transmission shaft schematic diagram for the embodiment of the utility model;

[0018] Figure 5 The utility model discloses a support frame inner wall schematic diagram for the embodiment of the utility model;

[0019] Figure 6 The utility model discloses a support frame top schematic diagram for the embodiment of the utility model.

[0020] Explanation of mark: 1-motor, 2-transmission box, 21-fixed box cover, 22-disassembled box cover, 3-support frame, 31-positioning hole, 4-avoidance slot, 5-bearing, 6-transmission shaft, 7-transmission tooth, 8-screw rod, 9-lifting sleeve, 10-inner tube, 11-sound absorption cavity, 12-sound absorption ring groove, 13-outer tube, 14-reinforcing rib structure, 15-first bolt, 16-motor rear cover, 17-second bolt. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model. It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or a centering element can be present at the same time. When an element is referred to as "connected to" another element, it can be directly connected to the other element or a centering element can be present at the same time. When an element is referred to as "fixedly connected to" another element, it can be fixedly connected to the other element by means of welding or bolt connection or adhesive connection and the like common fixed connection modes.

[0022] Please refer to Figures 1-6 The utility model discloses a kind of lift motors in preferred embodiment, including motor 1, transmission case 2, lifting assembly and lift assembly;The transmission case 2 is arranged in the shell of the motor 1 one end;The lateral wall of the transmission case 2 is provided with two support frames 3;Two support frames 3 are all provided with positioning hole 31 in it, the lateral wall of the positioning hole 31 is provided with several air-avoiding grooves 4;The lifting assembly includes two bearings 5, transmission shaft 6, transmission teeth 7 and screw rod 8;Two bearings 5 are positioned and arranged in two positioning hole 31 respectively, and the air-avoiding groove 4 is surrounded around the bearing 5;Transmission shaft 6 rotates and passes through two bearings 5;Transmission teeth 7 are arranged on the outside of transmission shaft 6, and transmission teeth 7 rotationally arranged between two bearings 5 and the drive end transmission connection of motor 1;Screw rod 8 is arranged at the top of transmission shaft 6;The lift assembly includes lifting sleeve 9 and inner tube 10;Lifting sleeve 9 is threadedly transmission sleeve and arranged on the outside of screw rod 8;Inner tube 10 is arranged on the outside of lifting sleeve 9.

[0023] Specifically, the top of the support frame 3 is provided with a sound absorbing cavity 11;The sound absorbing cavity 11 is located on the outside of the positioning hole 31;The top of the support frame 3 is provided with a sound absorbing ring groove 12;The sound absorbing ring groove 12 is located on the outside of the sound absorbing cavity 11. Sound absorbing cavity 11 and sound absorbing ring groove 12 further improve the sound absorbing and noise reduction function of lifting assembly.

[0024] Specifically, the lift assembly further includes an outer tube 13;The outer tube 13 is slidably sleeved on the outside of the inner tube 10, and the bottom of the outer tube 13 is inserted into the sound absorbing ring groove 12. Outer tube 13 facilitates the stable up and down of inner tube 10, and also seals positioning hole 31, sound absorbing cavity 11 and sound absorbing ring groove 12 in a relatively closed space.

[0025] Specifically, the outside of the lifting sleeve 9 is provided with a plurality of hollow grooves;Reinforcing rib structure 14 is formed between the plurality of hollow grooves to improve the support strength of the lifting of the inner tube 10.

[0026] Specifically, the transmission box 2 comprises a fixed box cover 21 and a disassembled box cover 22; the fixed box cover 21 is integrally connected with the shell of the motor 1; the disassembled box cover 22 is mounted and connected with the fixed box cover 21 through a first bolt 15.

[0027] Specifically, the motor 1 is provided with a motor rear cover 16 at the end; the disassembled box cover 22 is mounted and connected with the fixed box cover 21 through a second bolt 17, and the disassembled box cover 22 is fixedly connected with the motor rear cover 16 through the second bolt 17. The disassembled box cover 22, the fixed box cover 21 and the motor rear cover 16 are connected with each other, thereby improving the mounting and integration stability of the shell of the whole lifting motor.

[0028] From the above description, it can be known that the utility model can improve the structural strength of the lifting part, and can also improve the noise reduction performance of the transmission structure.

[0029] The preferred embodiments of the utility model are described in detail in combination with the drawings of the specification, and it should be indicated that the protection scope of the utility model includes but is not limited to the above-mentioned embodiments; the specific structure disclosed in the drawings of the specification is only a preferred embodiment of the utility model, and the person skilled in the art can also develop other embodiments on the basis, any simple transformation or equivalent replacement without departing from the innovative concept of the utility model is covered in the utility model, and belongs to the protection scope of the utility model.

Claims

1. A lift motor, characterized by Include: Motor; Transmission box; The transmission box is arranged at one end of the motor shell; the side wall of the transmission box is provided with two support frames; the two support frames are provided with positioning holes, and the side wall of the positioning hole is provided with a plurality of air avoidance grooves; Lifting assembly; The lifting assembly includes two bearings, a transmission shaft, a transmission gear and a lead screw; the two bearings are respectively positioned in the two positioning holes, and the air avoidance grooves are arranged around the bearings; the transmission shaft rotates through the two bearings; the transmission gear is arranged on the outside of the transmission shaft, and the transmission gear is rotatably arranged between the two bearings and the driving end of the motor; the lead screw is arranged on the top of the transmission shaft; Lifting assembly; the lifting assembly includes a lifting sleeve and an inner tube; the lifting sleeve is threadedly driven around the outside of the lead screw; the inner tube is arranged outside the lifting sleeve.

2. A lift motor according to claim 1, wherein: The top of the support frame is provided with a sound absorption cavity; the sound absorption cavity is located outside the positioning hole.

3. A lift motor according to claim 2, wherein: The top of the support frame is provided with a sound absorption ring groove; the sound absorption ring groove is located outside the sound absorption cavity.

4. A lift motor according to claim 3, wherein: The lifting assembly further includes an outer tube; the outer tube is slidably sleeved on the outside of the inner tube, and the bottom of the outer tube is inserted into the sound absorption ring groove.

5. A lift motor according to claim 1, wherein: The outside of the lifting sleeve is provided with a plurality of hollow grooves; the plurality of hollow grooves form a reinforcing rib structure.

6. A lift motor according to claim 1, wherein: The transmission box includes a fixed box cover and a disassembled box cover; the fixed box cover is integrally connected with the shell of the motor; the disassembled box cover is mounted and connected with the fixed box cover through the first bolt.

7. A lift motor as claimed in claim 6, wherein: The end of the motor is provided with a motor rear cover; the disassembled box cover is mounted and connected with the fixed box cover through the second bolt, and the disassembled box cover is fixedly connected with the motor rear cover through the second bolt.

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