Service life prolonging structure of gear box torsion switch toggle device

Abstract

The utility model discloses a service life prolonging structure of a gear box torsion switch poking device, which comprises a motor body, a reduction gear box and a connecting sleeve used for connecting the output end of the reduction gear box and a torsion switch, and the reduction gear box comprises a box body, machine core teeth, a duplicate gear set and an output gear. The machine core teeth are connected with an output shaft of the motor body and transmit power to the output gear through the duplicate gear set, the output gear is a metal structural part, a notch is formed in the end face of the outer side of the output gear, and a protrusion in clearance fit with the notch is arranged at one end of the connecting sleeve. And a switch groove connected with the torsion switch is arranged at the other end of the handle. According to the utility model, the last stage of output gear is machined and manufactured by a metal machine and is used for improving the strength of the gear, and the output end of the gear box and the connecting end of the switch are in transition connection by adopting special parts, so that the overall service life of the gear box is prolonged, and the safety and the reliability of the gear box are greatly improved.

Description

Technical Field

[0001] The utility model relates to a life-extending structure for a toggle device of a gear box torque switch, belonging to the technical field of gear box speed reduction. Background Art

[0002] There are many torque switches on the market, especially torque switches that require a relatively large torque to be turned when disconnected or connected to achieve normal functions. To turn such a switch, a small device with a large torque is required to drive the switch normally to achieve its normal function.

[0003] Currently in the market, especially in the automotive or new energy photovoltaic field, the gears in the gearbox device commonly used for toggle torque switches are made of powder metallurgy, and the gearbox is directly fixed to the torque switch connection end. Because the torque switch will release quickly after being toggled to a certain angle due to its own characteristics, the impact force of the switch itself will cause a considerable impact on the gear teeth of the gearbox. In actual use, the gear teeth of the gearbox often break, which causes the gearbox to fail. Therefore, it is very important to design a gearbox torque switch toggle structure with long life, high safety and strong reliability. Utility Model Content

[0004] The purpose of the utility model is to overcome the problems and shortcomings of the above-mentioned prior art and provide a life-extending structure for a gearbox torque switch toggle device, which uses a motor as a power source, and toggles the torque switch after the gearbox decelerates and increases torque. The last-stage output gear of the gearbox is made of metal machining because it has to withstand the largest torque to improve the gear strength. The output end of the gearbox and the switch connection end are connected by a unique part transition, which increases the overall life of the gearbox and greatly improves the safety and reliability of the gearbox.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a life-extending structure of a gear box torque switch toggle device, comprising a motor body, a reduction gear box and a connecting sleeve for connecting the output end of the reduction gear box and the torque switch, the reduction gear box comprising a box body, movement teeth, a double gear set and an output gear, the movement teeth are connected to the output shaft of the motor body, and the movement teeth transmit power to the output gear through the double gear set, the output gear is a metal structural part, and a notch is provided on the outer end face of the output gear, one end of the connecting sleeve is provided with a protrusion that matches the notch gap, and the other end is provided with a switch slot connected to the torque switch.

[0006] Furthermore, the box body includes an upper fixed plate, a lower fixed plate and a middle fixed frame. The middle fixed frame is installed between the upper fixed plate and the lower fixed plate. The middle fixed frame is used to limit the distance between the upper and lower fixed plates. The upper fixed plate, the lower fixed plate and the middle fixed frame are fastened and fixed by screws to form a reduction gear box body as a whole.

[0007] Furthermore, the step shaft clearance at the upper end of the output gear is installed in the shaft sleeve hole on the upper fixing plate, and the step shaft clearance at the lower end of the output gear is installed in the corresponding hole of the lower fixing plate.

[0008] Furthermore, the output stepped shaft of the motor body is installed in the motor hole corresponding to the lower fixing plate through clearance fit and is locked and fixed with screws.

[0009] Furthermore, the double gear set includes double gear one, double gear two, double gear three, and double gear four. The double gear one, double gear two, and double gear three are installed on the corresponding three fixed shafts one through their own center hole gaps and can rotate freely. The double gear four is installed on the corresponding fixed shaft two through its own center hole gap and can rotate freely.

[0010] Furthermore, the double gear two and the double gear three are provided with adjustment tubes for limiting their own axial movement.

[0011] Furthermore, the switch slot of the connecting sleeve is a hexagonal hole, the hexagonal hole is gap-worn on one end of the hexagonal output shaft of the torque switch and is fastened with screws, and the other end of the connecting sleeve is protruded into a straight-line flat shaft, which is docked with the straight-line notch of the output gear.

[0012] Furthermore, the width of the slotted opening of the output gear is greater than the slotted flat shaft of the connecting sleeve, and a gap is left between the two after they are connected.

[0013] The beneficial effects of the utility model are:

[0014] (1) Because the output gear of the utility model is formed by metal machining, the strength of the gear is improved, thereby improving the overall stability, safety and reliability of the product.

[0015] (2) The output gear of the utility model has a unique slot design and cooperates with the slotted flat shaft of the connecting sleeve, which effectively eliminates the impact of the impact force generated by the rapid release when the torque switch is turned on the gear teeth, thereby improving the safety, reliability and life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the appearance diagram of the product after the motor body and the reduction gear box of the utility model are assembled.

[0017] Figure 2 It is an exploded view of the motor body and reduction gearbox product of the utility model.

[0018] Figure 3 It is a schematic diagram of the internal structure of the reduction gear box of the utility model.

[0019] Figure 4 It is an exploded schematic diagram of the output gear, the connecting sleeve and the torque switch of the utility model.

[0020] Figure 5 The utility model is a schematic diagram of the coordinated use of the output gear, the connecting sleeve and the torque switch.

[0021] Markings in the figure are: 1-motor body, 2-movement teeth, 3-screws, 4-lower fixing plate, 5-middle fixing frame, 6-upper fixing plate, 7-double gear one, 8-double gear two, 9-double gear three, 10-double gear four, 11-fixed shaft one, 12-fixed shaft two, 13-output gear, 14-adjusting tube, 15-sleeve, 16-torque switch, 17-connecting sleeve, 18-slotted notch, 19-slotted flat shaft, 20-inner hexagonal hole, 21-hexagonal output shaft. DETAILED DESCRIPTION

[0022] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 5 A life-extending structure for a gearbox torque switch toggle device is mainly composed of a motor body, a reduction gearbox and a connecting sleeve.

[0024] The reduction gearbox is mainly composed of a movement gear 2, a double gear 1 7, a double gear 2 8, a double gear 3 9, a double gear 4 10, an output gear 13, an upper fixed plate 6, an adjustment tube 14, a sleeve 15, a fixed shaft 1 11, a fixed shaft 2 12, a lower fixed plate 4 and a middle fixed frame 5. The mutual connection mode is as follows: the fixed shaft 1 11 and the fixed shaft 2 12 are interference riveted to the corresponding holes of the lower fixed plate 4; the double gear 1 7, the double gear 2 8 and the double gear 3 9 are installed on the corresponding three fixed shafts 1 11 through their own center hole gaps and can rotate freely; the double gear 4 10 is installed on the corresponding fixed shaft 2 12 through its own center hole gaps and can rotate freely; the double gear 2 8 and the double gear 3 9 have an adjustment tube 14 to limit their own axial movement. The upper end step shaft of the output gear 13 is installed in the sleeve hole on the upper fixed plate 6, and the lower end step shaft of the output gear 13 is installed in the corresponding hole of the lower fixed plate 4, and the output gear 13 can rotate freely. A middle fixing frame 5 is installed between the upper and lower fixing plates to limit the distance between the upper and lower fixing plates. The upper and lower fixing plates are fixed by screws to form a reduction gear box body.

[0025] The output stepped shaft of the motor body 1 is installed in the motor hole corresponding to the lower fixing plate 4 through clearance fit and is locked and fixed with screws. One end of the connecting sleeve 17 is a hexagonal hole 20, which is sleeved on one end of the hexagonal output shaft of the torque switch 16 and locked and fixed with screws. The other end is a straight flat shaft 19 and docked with the straight slot 18 of the output gear. It should be noted that the width of the straight slot 18 of the output gear is larger than the straight flat shaft 19 of the connecting sleeve, and there is a gap between the two. When power is transmitted to the output gear and the torque switch is turned, the connecting sleeve drives the switch to run a certain angle and releases quickly. At this time, the impact force generated by the torque switch will not be directly transmitted to the teeth of the output gear due to the gap, thereby protecting the teeth of the output gear.

[0026] The working principle of the utility model is as follows: when the motor is used as a power source to provide power, the center hole of the movement tooth 2 and the motor output shaft are rigidly riveted due to interference fit, and the power is transmitted to the double gear 1 7, the double gear 1 7 transmits the power to the double gear 2 8, the double gear 2 8 transmits the power to the double gear 3 9, the double gear 3 9 transmits the power to the double gear 4 10, the double gear 4 10 finally transmits the power to the output gear 13, and the output gear 13 transmits the power to the torque switch 16 through the connecting sleeve 17.

[0027] Case 1: Because the output gear is formed by metal machining instead of powder metallurgy molding used in the market, the strength of the gear teeth is effectively improved, avoiding the occurrence of gear tooth breakage in the last stage of the output gear;

[0028] Case 2: The output gear in this mechanism has a unique slot design and cooperates with the slotted flat shaft of the connecting sleeve, which effectively eliminates the impact of the impact force generated by the rapid release when the torque switch is turned on the gear teeth, thereby improving the safety, reliability and life of the product.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the above embodiments do not limit the protection scope of the utility model in any form, and all technical solutions obtained by equivalent replacement and the like fall within the protection scope of the utility model.

[0030] The parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art.

Claims

1. A life extension structure of a gearbox torque switch toggle device, comprising a motor body and a reduction gearbox, characterized in that: It also includes a connecting sleeve for connecting the output end of the reduction gear box and the torque switch. The reduction gear box includes a box body, movement teeth, a double gear set and an output gear. The movement teeth are connected to the output shaft of the motor body. At the same time, the movement teeth transmit power to the output gear through the double gear set. The output gear is a metal structural part. A notch is provided on the outer end face of the output gear. One end of the connecting sleeve is provided with a protrusion that matches the notch gap, and the other end is provided with a switch slot connected to the torque switch.

2. The life-extending structure of a gearbox torque switch toggle device according to claim 1 is characterized in that: The box body includes an upper fixing plate, a lower fixing plate and a middle fixing frame. The middle fixing frame is installed between the upper fixing plate and the lower fixing plate. The middle fixing frame is used to limit the distance between the upper and lower fixing plates. The upper fixing plate, the lower fixing plate and the middle fixing frame are fastened and fixed by screws to form a reduction gear box body as a whole.

3. The life-extending structure of a gearbox torque switch toggle device according to claim 2 is characterized in that: The step shaft clearance at the upper end of the output gear is installed in the shaft sleeve hole on the upper fixing plate, and the step shaft clearance at the lower end of the output gear is installed in the corresponding hole of the lower fixing plate.

4. The life-extending structure of a gearbox torque switch toggle device according to claim 2, characterized in that: The output stepped shaft of the motor body is installed in the motor hole corresponding to the lower fixing plate through clearance fit and is locked and fixed with screws.

5. The life-extending structure of a gearbox torque switch toggle device according to claim 1, characterized in that: The double gear set includes double gear one, double gear two, double gear three, and double gear four. The double gear one, double gear two, and double gear three are installed on the corresponding three fixed shafts one through their own center hole gaps and can rotate freely. The double gear four is installed on the corresponding fixed shaft two through its own center hole gap and can rotate freely.

6. The life-extending structure of a gearbox torque switch toggle device according to claim 5, characterized in that: The double gear 2 and the double gear 3 are provided with adjustment tubes for limiting their own axial movement.

7. The life-extending structure of a gearbox torque switch toggle device according to claim 1, characterized in that: The switch slot of the connecting sleeve is a hexagonal hole, which is gap-fitted on one end of the hexagonal output shaft of the torque switch and is locked and fixed with screws. The other end of the connecting sleeve is protruded into a straight-shaped flat shaft, which is docked with the straight-shaped notch of the output gear.

8. The life-extending structure of a gearbox torque switch toggle device according to claim 7, characterized in that: The width of the slotted opening of the output gear is greater than the slotted flat shaft of the connecting sleeve, and a gap is left between the two after they are butted against each other.

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