CN212429643U

CN212429643U - Intermittent speed change gear box, speed change device thereof and mahjong machine with speed change gear box

Info

Publication number: CN212429643U
Application number: CN202020795597.4U
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 an intermittent speed change gear box, a speed change gear thereof 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; an arc-shaped track surrounding the periphery of the driving gear is arranged in the box body, the arc-shaped track is provided with medium teeth meshed with the driving gear, and when the driving gear rotates forwards, the medium teeth move to the end where the driven gear is located along the arc-shaped track and are meshed with the driven gear; when the driving gear rotates reversely, the intermediate gear moves to the end of the output gear along the arc-shaped track and is meshed with the output 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 can drive the idler teeth to move along the arc-shaped track and be meshed with the driven gear or the output gear, so that double-speed transmission is realized. The volume of the intermediate gear is small, and the whole structure of the gear box is small.

Description

Intermittent speed change gear box, speed change device thereof and mahjong machine with speed change gear box

Technical Field

The utility model relates to a speed change gear especially relates to an intermittent type change 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 an intermittent type change 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:

an intermittent speed change 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; an arc-shaped track surrounding the periphery of the driving gear is arranged in the box body, the arc-shaped track is provided with medium teeth meshed with the driving gear, and when the driving gear rotates forwards, the medium teeth move to the end where the driven gear is located along the arc-shaped track and are meshed with the driven gear; when the driving gear rotates reversely, the intermediate gear moves to the end of the output gear along the arc-shaped track and is meshed with the output gear.

When the driving gear of the gear box rotates forwards and backwards, the output gear can output two speeds, and the forward and backward rotation of the driving gear can drive the medium teeth to move along the arc-shaped track and be meshed with the driven gear or the output gear, 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.

As preferred, the box includes case shell and case lid, and the case lid closes on the case shell, and the arc track includes arc wall and lower arc wall, and lower arc wall is established on the case shell, goes up the arc wall and establishes on the case lid, and the both ends of mediating the tooth are installed through the round pin axle under between arc wall and the last arc wall.

The medium teeth can move along the arc-shaped track under the driving of the driving gear, the two ends of the medium teeth are respectively installed on the upper arc-shaped groove and the lower arc-shaped groove, the two ends of the medium teeth are firmly installed, and the medium teeth cannot easily fall out of the upper arc-shaped groove and the lower arc-shaped groove.

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 medium 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 an intermittent speed change gear box, wherein the intermittent speed change 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 intermittent speed change 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 rotation of the motor can drive the driving gear to rotate positively and negatively, and the positive and negative rotation of the driving gear can drive the idler teeth to move along the arc-shaped track and be meshed with the driven gear or the output gear, so that double-speed transmission is realized. The medium tooth volume is little, and gear box overall structure is small and exquisite, saves mahjong machine inner space for mahjong machine lightweight more and manufacturing cost is lower.

Drawings

Fig. 1 is an explosion structure diagram of the intermittent speed change gear box 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 structural diagram of the transmission of the present invention.

Fig. 5 is a schematic view of the structure of the stent of fig. 4.

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

Detailed Description

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

Example 1

An intermittent speed change gear box is shown in figures 1-3 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 arranged 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; an arc-shaped track 100 surrounding the periphery of the driving gear 11 is arranged in the box body 10, the arc-shaped track 100 is provided with a medium tooth 14 meshed with the driving gear 11, when the driving gear 11 rotates forwards, the driving gear 11 is meshed with the medium tooth 14, because two ends of the medium tooth 14 are not fixed, the medium tooth 14 can move around the driving gear 11 in a meshed mode, and the medium tooth 14 moves to the end where the driven gear 12 is located along the arc-shaped track 100 and is meshed with the driven gear 12; when the driving gear 11 rotates reversely, the driving gear 11 meshes with the intermediate teeth 14, the intermediate teeth 14 move along the other end of the arc-shaped track 100, and the intermediate teeth 14 move to the end of the output gear 13 and mesh with the output gear 13.

The box 10 comprises a box shell 101 and a box cover 102, the box cover 102 is covered on the box shell 101, the arc-shaped track 100 comprises an upper arc-shaped groove 1021 and a lower arc-shaped groove 1011, the lower arc-shaped groove 1011 is arranged on the box shell 101, the upper arc-shaped groove 1021 is arranged on the box cover 102, and two ends of the intervening teeth 14 are arranged between the lower arc-shaped groove 1011 and the upper arc-shaped groove 1021 through pin shafts. The intermediate tooth 14 can move along the arc-shaped track 100 under the driving of the driving gear 11, two ends of the intermediate tooth 14 are respectively arranged on the upper arc-shaped groove 1021 and the lower arc-shaped groove 1011, and two ends of the intermediate tooth 14 are firmly arranged and cannot easily fall out of the upper arc-shaped groove 1021 and the lower arc-shaped groove 1011.

The intermittent speed change gear box 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 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 an intermittent speed changing gear box in embodiment 1, wherein the intermittent speed changing gear box 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 4 and 5.

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 intermittent speed changing 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. An intermittent speed change gear box 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: an arc-shaped track (100) surrounding the periphery of the driving gear (11) is arranged in the box body (10), the arc-shaped track (100) is provided with a medium tooth (14) meshed with the driving gear (11), and when the driving gear (11) rotates forwards, the medium tooth (14) moves to the end where the driven gear (12) is located along the arc-shaped track (100) and is meshed with the driven gear (12); when the driving gear (11) rotates reversely, the intermediate gear (14) moves to the end of the output gear (13) along the arc-shaped track (100) and is meshed with the output gear (13).

2. An intermittent change speed gearbox as set forth in 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), the arc-shaped track (100) comprises an upper arc-shaped groove (1021) and a lower arc-shaped groove (1011), the lower arc-shaped groove (1011) is arranged on the box shell (101), the upper arc-shaped groove (1021) is arranged on the box cover (102), and two ends of the medium teeth (14) are arranged between the lower arc-shaped groove (1011) and the upper arc-shaped groove (1021) through a pin shaft.

3. An intermittent change speed gearbox as set forth in 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. An intermittent change speed gearbox as set forth in 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. An intermittent change speed gearbox according to any one 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 intermediate gear (14) is meshed with the large gear (121), and the small gear (122) is meshed with the output gear (13).

6. An intermittent change speed gearbox as set forth in 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: an intermittent change speed gearbox as claimed in any one of claims 3 to 6, which is fixed to the motor (18), the output shaft of the motor (18) being connected to the drive 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 bending board (191), first bending board (191) both sides are vertical respectively and are bent downwards and form second bending board (192) and third bending board (193), second bending board (192) level is outwards bent and is formed fourth bending board (194), third bending board (193) level is outwards bent and is formed fifth bending board (195), form between first bending board (191), second bending board (192) and third bending board (193) three and be used for holding intermittent type change gear box's recess (190), first bending board (191) pass through screw and case lid (102) fixed connection, be equipped with on first bending board (191) 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.