CN212429638U

CN212429638U - Double-speed gear box, speed change device thereof and mahjong machine with speed change device

Info

Publication number: CN212429638U
Application number: CN202020792650.5U
Authority: CN
Inventors: 陈灵荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2021-01-29
Anticipated expiration: 2030-05-13

Abstract

The utility model relates to a speed change gear, and discloses a double-speed gear box, a speed change gear and a mahjong machine comprising a box body and a motor, wherein a driving gear, a driven gear and an output gear are arranged in the box body; the box body is also internally provided with a first intermediate gear and a second intermediate gear which are arranged at two sides of the driving gear, and when the driving gear rotates forwards, the driving gear is meshed with the driven gear through the first intermediate gear; when the driving gear rotates reversely, the driving gear is meshed with the output gear through the second intermediate gear. The positive and negative rotation of the motor can drive the driving gear to rotate positively and negatively, and the positive and negative rotation of the driving gear is meshed with the corresponding intermediate gear respectively, so that double-speed transmission is realized. Two are situated between the tooth and all install in the box through the pivot, and two are situated between tooth simple to operate, and two are situated between the tooth volume and are little, and gear box overall structure is small and exquisite, saves mahjong machine inner space for light-weighted and the low more of manufacturing cost of mahjong machine.

Description

Double-speed gear box, speed change device thereof and mahjong machine with speed change device

Technical Field

The utility model relates to a speed change gear especially relates to a double speed gear box and speed change gear and mahjong machine thereof.

Background

Synchronous gear motor is comparatively extensive in mahjong machine's application, and double speed gear motor increases single-phase bearing mechanism on original synchronous gear motor's basis, is equivalent to and forms motor, single-phase bearing and change gear combination, like the patent document in prior art (application number is 201920998231.4, novel double speed gear motor) that publishes, its principle realizes the transmission of gear through setting up the cooperation realization of one-way bearing and pivot. The motor rotates forwards, a single-phase bearing drives the rotating shaft to directly drive the speed change gear 1, the motor rotates backwards, a single-phase bearing idles, the duplicate gear drives the other single-phase bearing, and the other single-phase bearing drives the speed change gear 2, so that double-speed reduction output is realized. Although the single-phase bearing is a mature technology, the structure of the single-phase bearing is still relatively complex, the volume is relatively large, and the reference circle size of the gear matched with the single-phase bearing is relatively large. The matching relation among the single-phase bearing, the rotating shaft and the gear is complex, and the manufacturing process is complex.

SUMMERY OF THE UTILITY MODEL

The utility model provides a double speed gear box and speed change gear and mahjong machine thereof to the complicated shortcoming of double speed transmission structure among the prior art.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

a double-speed gear box comprises a box body, wherein a driving gear, a driven gear and an output gear are arranged in the box body, the driving gear is meshed with the driven gear, and the driven gear is meshed with the output gear; the box body is also internally provided with a first intermediate gear and a second intermediate gear which are arranged at two sides of the driving gear, and when the driving gear rotates forwards, the driving gear is meshed with the driven gear through the first intermediate gear; when the driving gear rotates reversely, the driving gear is meshed with the output gear through the second intermediate gear.

When the driving gear of the gear box rotates forwards and backwards, the output gear can output two speeds, and the driving gear rotates forwards and backwards and is meshed with the corresponding medium teeth respectively, so that double-speed transmission is realized, the medium teeth are simple in structure and convenient to install, and the power output of the output gear is stable.

Preferably, the box body comprises a box shell and a box cover, the box cover covers the box shell, a first lower rail groove and a second lower rail groove are formed in the box shell, a first upper rail groove and a second upper rail groove are formed in the box cover, the first intervening teeth are installed between the first lower rail groove and the first upper rail groove through a pin shaft, and the second intervening teeth are installed between the second lower rail groove and the second upper rail groove through a pin shaft.

The track groove is convenient for people to install a first intermediate tooth and a second intermediate tooth, the first lower track groove and the first upper track groove are tracks of the first intermediate tooth, the first intermediate tooth can move on the first upper track groove and the first lower track groove under the pushing of the meshing force of the driving gear, when the transmission of the first intermediate tooth is needed, the driving gear is meshed with the first intermediate tooth and pushes the first intermediate tooth to move to the driven gear, the first intermediate tooth is meshed with the driven gear, the driving gear is meshed with the second intermediate tooth and pushes the second intermediate tooth to be far away from the output gear, and the second intermediate tooth idles; the second lower track groove and the second upper track groove are tracks with second intermediate teeth, the second intermediate teeth can move on the second upper track groove and the second lower track groove under the pushing of the meshing force of the driving gear, two ends of the second intermediate teeth can move on the second lower track groove and the second upper track groove, when the second intermediate teeth are needed to transmit, the driving gear is meshed with the second intermediate teeth and pushes the second intermediate teeth to move to the output gear, the second intermediate teeth are meshed with the output gear, the driving gear is meshed with the first intermediate teeth and pushes the first intermediate teeth to be away from the driven gear, and the first intermediate teeth idle.

Preferably, the box cover further comprises a working gear, an output shaft is fixed on the output gear, and the output shaft extends out of the box cover and is fixedly connected with the working gear. The output shaft can transmit the power of the output gear to other components.

Preferably, the upper end part of the output shaft is provided with a positioning surface for positioning connection with the working gear, the positioning surface extends along the axial direction of the output shaft and extends to the end surface of the top end of the output shaft, and the positioning surface is parallel to the central axis of the output shaft. The locating surface on the output shaft can be matched with the working gear, so that the working gear is axially locked on the output shaft.

Preferably, the driven gear is installed in the box body through a pin shaft, the driven gear is a duplicate gear, the duplicate gear comprises a large gear and a small gear, when the driving gear rotates forwards, the first intermediate gear is meshed with the large gear, and the small gear is meshed with the output gear.

Preferably, the module of the large gear is the same as that of the small gear, and the number of teeth of the large gear is larger than that of the small gear.

A speed change device comprises a motor and a double-speed gear box, wherein the double-speed gear box is fixed on the motor, and an output shaft of the motor is connected with a driving gear and drives the driving gear to rotate. The motor is used as a power source, and the positive and negative rotation of the motor can drive the driving gear to rotate positively and negatively, so that the output shaft can output two speeds.

Preferably, the support is formed by bending the bending plates, the support comprises a first bending plate, two sides of the first bending plate are respectively vertically bent downwards to form a second bending plate and a third bending plate, the second bending plate is horizontally bent outwards to form a fourth bending plate, the third bending plate is horizontally bent outwards to form a fifth bending plate, grooves for containing the double-speed gear box are formed among the first bending plate, the second bending plate and the third bending plate, the first bending plate is fixedly connected with the box cover through screws, and through holes for the working gears to pass through are formed in the first bending plate.

The support is convenient for installing the speed change device on other mahjong machine accessories on one hand, and is convenient for installing the devices such as the capacitor of the motor on the other hand.

A mahjong machine comprises a bottom plate, a large plate and a central lifting device, wherein the central lifting device is arranged on the bottom plate, and the large plate is arranged on the central lifting device through a bearing; the speed changing device is fixed on the bottom plate, and a working gear of the speed changing device is meshed with a gear on the large disc. The mahjong shuffling machine has low noise and much higher shuffling speed than the prior mahjong shuffling machine.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect: the positive and negative of motor can drive the driving gear positive and negative rotation to can make the output shaft output two kinds of speeds. The positive and negative rotation of the driving gear is respectively meshed with the corresponding intermediate gear, thereby realizing double-speed transmission. First tooth and second are situated between the tooth and are installed in the box through the pivot, and first tooth and second are situated between simple structure and simple to operate, and two are situated between the tooth volume and are little to make this gear box overall structure small and exquisite, save mahjong machine inner space, make light-weighted and manufacturing cost lower more of mahjong machine.

Drawings

Fig. 1 is a schematic diagram of an explosion structure of a middle two-speed gearbox of the present invention.

Fig. 2 is a schematic view of the installation structure of the gears in the casing of fig. 1.

Fig. 3 is a schematic structural view of the case of fig. 1.

Fig. 4 is a schematic view of a rear structure of the box cover in fig. 3.

Fig. 5 is a schematic structural diagram of the transmission of the present invention.

Fig. 6 is a schematic view of the structure of the stent of fig. 5.

The names of the parts indicated by the numerical references in the above figures are as follows: 10-box body, 11-driving gear, 12-driven gear, 13-output gear, 14-first intermediate gear, 15-second intermediate gear, 16-working gear, 17-output shaft, 18-motor, 19-bracket, 101-box shell, 102-box cover, 121-large gear, 122-small gear, 171-locating surface, 190-groove, 191-first bending plate, 192-second bending plate, 193-third bending plate, 194-fourth bending plate, 195-fifth bending plate, 1011-first lower track groove, 1012-second lower track groove, 1021-first upper track groove, 1022-second upper track groove and 1911-through hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

A double-speed gearbox is shown in figures 1-4 and comprises a box body 10, wherein the box body 10 is formed by injection molding of plastic materials, the outer contour of the periphery of the box body 10 is square, and the square box body 10 is conveniently installed in a mahjong machine. A driving gear 11, a driven gear 12 and an output gear 13 are installed in the box body 10, the driving gear 11 is meshed with the driven gear 12, and the driven gear 12 is meshed with the output gear 13. The box body 10 is also internally provided with a first intermediate gear 14 and a second intermediate gear 15 which are arranged at two sides of the driving gear 11, when the driving gear 11 rotates forwards, the driving gear 11 is meshed with the driven gear 12 through the first intermediate gear 14, the driving gear 11 is meshed with the first intermediate gear 14 and pushes the first intermediate gear 14 to be meshed with the driven gear 12, and at the moment, the driving gear 11 is meshed with the second intermediate gear 15 and pushes the second intermediate gear to be separated from the output gear 13, so that the second intermediate gear 15 idles; when the driving gear 11 rotates reversely, the driving gear 11 is engaged with the output gear 13 through the second intermediate gear 15, the driving gear 11 is engaged with the second intermediate gear 15 and pushes the second intermediate gear 15 to be engaged with the output gear 13, and at this time, the driving gear 11 is engaged with the first intermediate gear 14 and pushes the first intermediate gear 14 to be disengaged from the driven gear 12, so that the first intermediate gear 14 idles.

The box body 10 comprises a box shell 101 and a box cover 102, the box cover 102 is covered on the box shell 101, the box cover 102 is fixed on the box shell 101 through screws, a first lower track groove 1011 and a second lower track groove 1012 are arranged on the box shell 101, a first upper track groove 1021 and a second upper track groove 1022 are arranged on the box cover 102, a first intervening tooth 14 is arranged between the first lower track groove 1011 and the first upper track groove 1021 through a pin shaft, and a second intervening tooth 15 is arranged between the second lower track groove 1012 and the second upper track groove 1022 through a pin shaft. The track groove is convenient for people to install a first intermediate tooth 14 and a second intermediate tooth 15, a first lower track groove 1011 and a first upper track groove 1021 are tracks of the first intermediate tooth 14, the first intermediate tooth 14 can move on the first upper track groove 1021 and the first lower track groove 1011 under the pushing of the meshing force of the driving gear, when the transmission of the first intermediate tooth 14 is needed, the driving gear 11 is meshed with the first intermediate tooth 14 and pushes the first intermediate tooth to move to the driven gear 12, the first intermediate tooth 14 is meshed with the driven gear 12, the driving gear 11 is meshed with the second intermediate tooth 15 and pushes the second intermediate tooth 15 to be far away from the output gear 13, and the second intermediate tooth 15 idles; the second lower track groove 1012 and the second upper track groove 1022 are tracks of the second intermediate tooth 15, the second intermediate tooth 15 can move on the second upper track groove 1022 and the second lower track groove 1012 under the pushing of the meshing force of the driving gear 11, two ends of the second intermediate tooth 15 can move on the second lower track groove 1012 and the second upper track groove 1022, when the transmission of the second intermediate tooth 15 is needed, the driving gear 11 is meshed with the second intermediate tooth 15 and pushes the second intermediate tooth 15 to move to the output gear 13, the second intermediate tooth 15 is meshed with the output gear 13, the driving gear 11 is meshed with the first intermediate tooth 14 and pushes the first intermediate tooth 14 to be far away from the driven gear 12, and the first intermediate tooth 14 idles.

The two-speed gearbox also comprises a working gear 16, the working gear 16 is used for meshing with a gear on the large disc, an output shaft 17 is fixed on the output gear 13, and the output shaft 17 extends out of the box cover 102 and is fixedly connected with the working gear 16. The upper end part of the output shaft 17 is provided with a positioning surface 171 for positioning and connecting with the working gear 16, the upper end part of the output shaft 17 is cut out to form the positioning surface 171, the positioning surface 171 extends along the axial direction of the output shaft 17 and extends to the top end surface of the output shaft 17, and the positioning surface 171 is parallel to the central axis of the output shaft 17.

The driven gear 12 is installed in the box body 10 through a pin shaft, the driven gear 12 is a duplicate gear, the duplicate gear comprises a large gear 121 and a small gear 122, when the driving gear 11 rotates forwards, the first intermediate gear 14 is meshed with the large gear 121, and the small gear 122 is meshed with the output gear 13. The module of the large gear 121 is the same as that of the small gear 122, and the number of teeth of the large gear 121 is greater than that of the small gear 122.

Example 2

A speed changing device comprises a motor 18 and a two-speed gearbox in embodiment 1, wherein the two-speed gearbox is fixed on the motor 18, and an output shaft of the motor 18 is connected with a driving gear 11 and drives the driving gear to rotate, as shown in figures 5 and 6.

The speed changing device further comprises a support 19 formed by bending the bending plates, the support 19 comprises a first bending plate 191, two sides of the first bending plate 191 are respectively bent downwards vertically to form a second bending plate 192 and a third bending plate 193, the second bending plate 192 is bent outwards horizontally to form a fourth bending plate 194, the third bending plate 193 is bent outwards horizontally to form a fifth bending plate 195, grooves 190 used for containing the double-speed gearbox are formed among the first bending plate 191, the second bending plate 192 and the third bending plate 193, the first bending plate 191 is fixedly connected with the box cover 102 through screws, and a through hole 1911 for the working gear 16 to pass through is formed in the first bending plate 191.

Example 3

A mahjong machine is disclosed in the embodiment 3, which does not have corresponding drawings, and comprises a bottom plate, a large plate and a central lifting device, wherein the bottom plate, the large plate and the central lifting device are relatively conventional parts in the market, the central lifting device is installed on the bottom plate, the large plate is installed on the central lifting device through a bearing, the mahjong machine further comprises a speed change device in the embodiment 2, the speed change device is fixed on the bottom plate, and a working gear 16 of the speed change device is meshed with a gear on the large plate.

Claims

1. A double-speed gearbox comprises a box body (10), wherein a driving gear (11), a driven gear (12) and an output gear (13) are installed in the box body (10), the driving gear (11) is meshed with the driven gear (12), and the driven gear (12) is meshed with the output gear (13); the method is characterized in that: a first intermediate tooth (14) and a second intermediate tooth (15) which are arranged at two sides of the driving gear (11) are further arranged in the box body (10), and when the driving gear (11) rotates forwards, the driving gear (11) is meshed with the driven gear (12) through the first intermediate tooth (14); when the driving gear (11) rotates reversely, the driving gear (11) is meshed with the output gear (13) through the second intermediate gear (15).

2. A two speed gearbox according to claim 1 wherein: the box body (10) comprises a box shell (101) and a box cover (102), the box cover (102) is covered on the box shell (101), a first lower track groove (1011) and a second lower track groove (1012) are arranged on the box shell (101), a first upper track groove (1021) and a second upper track groove (1022) are arranged on the box cover (102), a first intervening tooth (14) is arranged between the first lower track groove (1011) and the first upper track groove (1021) through a pin shaft, and a second intervening tooth (15) is arranged between the second lower track groove (1012) and the second upper track groove (1022) through a pin shaft.

3. A two speed gearbox according to claim 2 wherein: the box cover is characterized by further comprising a working gear (16), an output shaft (17) is fixed on the output gear (13), and the output shaft (17) extends out of the box cover (102) and is fixedly connected with the working gear (16).

4. A two speed gearbox according to claim 3 wherein: the upper end part of the output shaft (17) is provided with a positioning surface (171) used for being connected with the working gear (16) in a positioning mode, the positioning surface (171) extends along the axial direction of the output shaft (17) and extends to the end face of the top end of the output shaft (17), and the positioning surface (171) is parallel to the central axis of the output shaft (17).

5. A two-speed gearbox according to any of claims 1 to 4 wherein: the driven gear (12) is installed in the box body (10) through a pin shaft, the driven gear (12) is a duplicate gear, the duplicate gear comprises a large gear (121) and a small gear (122), when the driving gear (11) rotates forwards, the first intermediate gear (14) is meshed with the large gear (121), and the small gear (122) is meshed with the output gear (13).

6. A two speed gearbox according to claim 5 wherein: the modulus of the large gear (121) is the same as that of the small gear (122), and the number of teeth of the large gear (121) is larger than that of the small gear (122).

7. A transmission comprising an electric motor (18), characterized in that: a two-speed gearbox according to any of the claims 3 to 6, which is fixed to the electric motor (18), the output shaft of the electric motor (18) being connected to the driving gear (11) and driving it in rotation.

8. A transmission as claimed in claim 7, wherein: still include support (19) through the board bending formation of bending, support (19) are including first board (191) of bending, first board (191) both sides of bending are vertical bend downwards respectively and are formed second board (192) of bending and third board (193) of bending, second board (192) of bending level outwards bend and form fourth board (194) of bending, third board (193) of bending level outwards bend and form fifth board (195) of bending, first board (191), form between second board (192) of bending and the third board (193) of bending three and be used for holding double speed gear box's recess (190), first board (191) of bending pass through screw and case lid (102) fixed connection, be equipped with on first board (191) of bending and supply through-hole (1911) that work gear (16) pass through.

9. The utility model provides a mahjong machine, includes that bottom plate, large plate and center go up and down, and center goes up and down to install on the bottom plate, and the large plate passes through the bearing to be installed on center goes up and down, its characterized in that: a gear change unit according to any one of claims 7-8, which is fixed to the base plate, and the working gear (16) of which is in mesh with the gear on the large disc.