CN219605956U - Worm gear and worm differential gearbox for on-off control - Google Patents

Abstract

The utility model discloses a worm and gear split type gearbox for opening and closing control, which structurally comprises a box body and a transmission assembly arranged in the box body, wherein the transmission assembly comprises a worm and a worm gear arranged on a rotating shaft, the box body comprises a lower base shell and an upper box shell which are embedded up and down, vertical rod grooves and horizontal shaft grooves are formed in the lower base shell and the upper box shell, the worm is arranged in the vertical rod grooves, the rotating shaft where the worm gear is arranged in the horizontal shaft grooves, and the worm and gear box adopted by a translation door machine is subjected to upper and lower split type design.

Description

Worm gear and worm differential gearbox for on-off control

Technical Field

The utility model relates to the field of translation door machines, in particular to a worm gear type gearbox for opening and closing control.

Background

The driving device for opening and closing control is specifically a translation door machine, is used for an electric door opening machine for horizontally moving a sliding door at an entrance of a fence and the like, and generally comprises a worm gear box and a motor arranged on the worm gear box, wherein the worm gear box drives the sliding door to horizontally move by an external gear.

However, the existing worm and gear box of the sliding door is generally manufactured integrally, injection molding plastic is also provided with die casting aluminum, and because the vertical rod groove and the horizontal shaft groove which are mutually perpendicular are provided for assembling the worm and the worm gear which are meshed with each other, core pulling operation is needed during demolding, and the matching precision between the vertical rod groove and the horizontal shaft groove is relatively dependent on core pulling precision, but in actual production, the precision between the vertical rod groove and the horizontal shaft groove which are loose core is easily caused to deviate due to uneven cooling, mould precision loss or shaking of a core pulling shaft and other conditions, so that the ground meshing of the assembled worm and worm gear is problematic, the transmission effect is influenced, and the existing worm and gear box is mostly carried out by workers during assembly, and the box body is provided with two assembly reference surfaces, so that the assembly precision can not be completely ensured during assembly, the ground meshing of the assembled worm and worm gear is problematic, and the transmission effect is influenced.

Disclosure of Invention

The utility model provides a worm gear and worm split type gearbox for opening and closing control, which structurally comprises a box body and a transmission assembly arranged in the box body, wherein the transmission assembly comprises a worm and a worm wheel arranged on a rotating shaft, the worm and the rotating shaft are arranged in the box body through bearings, the box body comprises a lower base shell and an upper box shell which are embedded up and down, vertical rod grooves and horizontal shaft grooves are respectively arranged in the lower base shell and the upper box shell, the vertical rod grooves are vertical, the axis of each vertical rod groove is perpendicular to the axis of each horizontal shaft groove, the worm is arranged in each vertical rod groove, and the rotating shaft where the worm wheel is arranged in each horizontal shaft groove.

Further, the vertical rod groove and the horizontal shaft groove on the lower base shell are datum groove holes of the positioning worm and the worm wheel.

Further, the lower base shell is provided with a threaded hole, and the upper case shell is provided with a perforation corresponding to the position of the threaded hole on the lower base shell.

Further, the lower base shell is provided with a locating pin, and the upper case shell is provided with a corresponding groove in clearance fit with the locating pin.

Further, a protruding locating pin is arranged on the threaded hole of the lower base shell, and a corresponding groove is arranged on the bottom surface of the through hole of the upper box shell and is in clearance fit with the locating pin on the threaded hole.

Further, the upper case is provided with a screw hole for fixing the motor.

Further, the threaded holes on the upper case shell are parallel to the axis direction of the threaded holes on the lower base shell, and are perpendicular to the horizontal line.

Further, the cross shaft grooves of the upper case shell and the lower base shell are respectively provided with a pressing shaft part with annular grooves, and the bearings are arranged in the pressing shaft parts.

Further, a plurality of side ribs are arranged between the outer side of the pressing shaft part of the upper case and the upper case, a sunken allowance groove is arranged in the side ribs, the allowance groove penetrates through the pressing shaft part of the front end and the transverse shaft groove of the other side, and the pressing shaft part of the upper case is separated into a plurality of blocks by the allowance groove.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the worm and gear box adopted by the translation door machine is designed in an up-down parting way, the two upper and lower box bodies are manufactured by injection molding and demolding of the upper and lower molds, so that the slotted hole for assembling the worm and gear is divided into two parts, the vertical rod groove and the horizontal shaft groove on the lower base shell are used as reference slotted holes for positioning the worm and the worm gear, the demolding precision of the vertical rod groove and the horizontal shaft groove on the adopted lower base shell is better ensured and easier to process than the precision of the integral core pulling type in the prior art, and the reference positioning is carried out on the worm and gear in advance, so that the precision of the reference assembly between the worm and the worm gear is ensured, and the transmission effect of the worm and the worm gear is ensured.

The screw holes on the upper case shell are parallel to the axis direction of the screw holes on the lower base shell, and are vertical to the horizontal line, namely, the assembly modes from top to bottom are adopted, so that the assembly directions of the motor and the upper case shell are unified, the assembly can be unified on a production line, and the assembly precision is further ensured during assembly.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the worm gear parting gearbox of the utility model.

Fig. 2 is a schematic three-dimensional structure of a worm gear box in the prior art.

Fig. 3 is an exploded view of the worm gear parting gearbox of the present utility model.

Fig. 4 is a schematic three-dimensional structure of an embodiment of the worm gear differential gearbox of the present utility model.

In the figure: 1. a case; 2. a worm; 3. a worm wheel; 4. a bearing; 5. a rotating shaft; 6. a gear; 11. a lower base shell; 12. an upper case; 13. pressing the shaft part; 14. side ribs; 1a, a vertical rod groove; 1b, transverse axis grooves; 1c, positioning pins; 1d, a threaded hole; 1e, the allowance groove.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

Examples: as shown in fig. 1-4, the utility model provides a worm and gear split type gearbox for opening and closing control, the structure of the gearbox comprises a box body 1 and a transmission assembly arranged in the box body 1, the transmission assembly comprises a worm 2, a worm wheel 3 arranged on a rotating shaft 5, and a gear 6 connected with the rotating shaft 5 at the outer side of the box body 1, wherein the worm 2 and the rotating shaft 5 are arranged in the box body 1 through bearings 4, the worm 2 is connected with a crankshaft of a motor in the box body 1, the box body 1 in split design comprises a lower base shell 11 and an upper box shell 12 which are embedded up and down, vertical rod grooves 1a and horizontal shaft grooves 1b are respectively arranged in the lower base shell 11 and the upper box shell 12, the vertical rod grooves 1a and the horizontal shaft grooves 1b are respectively arranged in the lower base shell 11 and the upper base shell 12, the vertical rod grooves 1a and the horizontal shaft grooves 1b are respectively used for installing the worm 2, the worm wheel 3, the bearings 4 and the rotating shaft 5 are respectively arranged in the vertical rod grooves 1a, the rotating shaft grooves 3 are respectively arranged in the horizontal shaft grooves 1b, the horizontal shaft grooves 1b of the upper box shell 12 and the lower base shell 11 are respectively, and the vertical rod grooves 11 a vertical rod grooves 12 are respectively arranged at the positions of the upper and lower base shells 1a vertical rod 1a and the lower base shell 1, and the vertical rod grooves 11 are respectively, and the vertical rod grooves 12 are respectively arranged at the upper and lower vertical shaft parts of the vertical rod grooves 1a and the vertical rod 1b, and the vertical rod grooves 1b are respectively, and the vertical rod grooves 13 are arranged at the vertical shaft, and the vertical shaft positions and the vertical rod can.

The lower base shell 11 and the upper case shell 12 are both made by injection molding and demolding with upper and lower molds, and may be made of plastic or aluminum.

It can be seen that the vertical rod groove 1a and the horizontal shaft groove 1b on the lower base shell 11 are reference slots for positioning the worm 2 and the worm wheel 3, the lower base shell 11 and the upper case shell 12 are directly released from the upper and lower molds in the injection molding process, and the releasing directions are the same, so that the precise positions of the vertical rod groove 1a and the horizontal shaft groove 1b on the lower base shell 11 are ensured, and the assembly precision between the worm 2 and the worm wheel 3 is higher and reliable by controlling based on the precise positions.

Furthermore, the lower base shell 11 is provided with a locating pin 1c, and the upper case shell 12 is provided with a corresponding groove in clearance fit with the locating pin 1c, so that the lower base shell 11 and the upper case shell 12 can be conveniently and rapidly positioned and assembled.

In addition, the lower base shell 11 is provided with a threaded hole 1d, the upper case shell 12 is provided with a through hole corresponding to the position of the threaded hole 1d on the lower base shell 11, in this embodiment, the threaded hole 1d of the lower base shell 11 is provided with a protruding positioning pin 1c, and the bottom surface of the through hole of the upper case shell 12 is provided with a corresponding groove in clearance fit with the positioning pin 1c on the threaded hole 1 d.

Similarly, the upper casing 12 is provided with a screw hole 1d for fixing the motor, and the screw hole 1d on the upper casing 12 is parallel to the axis direction of the screw hole 1d on the lower base casing 11 and is perpendicular to the horizontal line, so that the assembly direction of the motor and the upper casing 12 is unified, and the motor and the upper casing 12 can be assembled on a production line in a unified manner.

When the worm gear box is specifically used, a shaft of a motor passes through a vertical rod groove 1a of an upper box shell 12, then a bearing 4 and a worm 2 are sequentially nested on the shaft of the motor in the upper box shell 12 and the worm 2 is fixed with the shaft of the motor, then a worm wheel 3 is assembled on a rotating shaft 5, the upper bearing 4 is assembled on two sides of the rotating shaft 5, the rotating shaft 5 is assembled in a transverse shaft groove 1b, the bearings 4 on two sides are embedded in a pressing shaft part 13 which is an annular groove, the upper bearing 4 is arranged in a vertical rod groove 1a of a lower base shell 11, then the upper box shell 12 is pressed down, the worm 2 is embedded in the bearing 4 of the lower base shell 11, the vertical rod groove 1a and the transverse shaft groove 1b on the lower base shell 11 are used as reference slots for positioning the worm 2 and the worm wheel 3, and the demoulding precision of the vertical rod groove 1a and the transverse shaft groove 1b on the lower base shell 11 is better guaranteed and easier to process than the precision of the integral loose core in the prior art, so that the precision of the reference assembly between the worm 2 and the worm wheel 3 is guaranteed, and the transmission effect of the worm wheel of the worm 2 and 3 is guaranteed;

and the screw hole 1d on the upper case 12 is parallel to the axis direction of the screw hole 1d on the lower base 11, and is vertical to the horizontal line, namely, the assembly mode is from top to bottom, so that the assembly direction of the motor and the upper case 12 is unified, the motor and the upper case 12 can be assembled on a production line in a unified way, and the assembly precision is further ensured during assembly.

In this embodiment, a plurality of side ribs 14 are disposed between the outer side of the pressing shaft portion 13 of the upper case 12 and the upper case 12, a recessed allowance groove 1e is disposed in the side rib 14, and the allowance groove 1e penetrates through the pressing shaft portion 13 at the front end and the lateral shaft groove 1b at the other side, and the pressing shaft portion 13 of the upper case 12 is divided into a plurality of blocks by the allowance groove 1e, so that when the upper case 12 is press-fitted on the lower base case 11, the pressing shaft portion 13 of the upper case 12 has a certain movable space for pressing the bearing 4 located on the reference pressing shaft portion 13, and the over-positioning fitting condition is avoided.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

Claims (9)

1. The utility model provides a worm gear worm branch type gearbox that control was used opens and close, its structure includes the box and installs the drive assembly in the box, drive assembly includes the worm and installs at epaxial worm wheel of pivot, worm and pivot pass through the bearing and install in the box, its characterized in that: the box body comprises a lower base shell and an upper box shell which are embedded up and down, and a vertical rod groove and a horizontal shaft groove are formed in the lower base shell and the upper box shell;

the vertical rod groove is vertical, the axis of the vertical rod groove is perpendicular to the axis of the transverse shaft groove, the worm is arranged in the vertical rod groove, and the rotating shaft where the worm wheel is arranged in the transverse shaft groove.

2. The worm gear type gearbox for on-off control according to claim 1, wherein: the vertical rod groove and the horizontal shaft groove on the lower base shell are datum groove holes of the positioning worm and the worm wheel.

3. The worm gear type gearbox for on-off control according to claim 2, wherein: the lower base shell is provided with a threaded hole, and the upper box shell is provided with a perforation corresponding to the threaded hole on the lower base shell.

4. A worm gear type gearbox for on-off control according to claim 3, wherein: the lower base shell is provided with a locating pin, and the upper box shell is provided with a corresponding groove in clearance fit with the locating pin.

5. The worm gear type gearbox for on-off control according to claim 4, wherein: the threaded hole of lower basal shell is equipped with the locating pin of protruding form, the perforation bottom surface of last case shell is equipped with corresponding recess and the locating pin on the threaded hole is clearance fit.

6. A worm gear type gearbox for on-off control according to claim 3, wherein: the upper case shell is provided with a threaded hole for fixing the motor.

7. The worm gear type gearbox for on-off control according to claim 6, wherein: the threaded holes on the upper box shell are parallel to the axis direction of the threaded holes on the lower base shell, and are perpendicular to the horizontal line.

8. The worm gear type gearbox for on-off control according to claim 2, wherein: the transverse shaft grooves of the upper box shell and the lower base shell are respectively provided with a pressing shaft part with an annular groove, and the bearings are arranged in the pressing shaft parts.

9. The worm gear type gearbox for on-off control according to claim 8, wherein: a plurality of side ribs are arranged between the outer side of the pressing shaft part of the upper case and the upper case, a sunken allowance groove is arranged in the side ribs, the allowance groove penetrates through the pressing shaft part of the front end and the transverse shaft groove of the other side, and the pressing shaft part of the upper case is separated by the allowance groove to form a plurality of blocks.