CN214485594U

CN214485594U - Central lifting mechanism and mahjong machine

Info

Publication number: CN214485594U
Application number: CN202120367564.4U
Authority: CN
Inventors: 阳琳
Original assignee: Individual
Current assignee: Espressif Smart Technology Zhejiang Co ltd
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2021-10-26
Anticipated expiration: 2031-02-07

Abstract

The utility model relates to a mahjong machine technical field, concretely relates to central elevating system and mahjong machine. The central lifting mechanism comprises a lifting seat, a lifting rod, a dice disc, a lifting motor and a vertical cam, wherein the lifting motor is vertically arranged, and an output shaft of the lifting motor is coaxially arranged with the lifting rod and is positioned below the lifting rod; the lower end of the vertical cam is coaxially and fixedly connected with an output shaft of the lifting motor, a cam track surface with height change is arranged on the upper end face of the vertical cam along the circumferential direction, and a supporting part used for being in contact fit with the cam track surface is arranged on the lifting rod. In the structure, the lifting motor is vertically arranged, the output shaft of the lifting motor is coaxial with the lifting rod, the lifting motor is superposed with the projection of the lifting rod, and in the projection direction, the occupied space is smaller, so that the space utilization rate of the mahjong machine is higher, the structure is more compact, and the volume is smaller.

Description

Central lifting mechanism and mahjong machine

Technical Field

The utility model relates to a mahjong machine technical field, concretely relates to central elevating system and mahjong machine.

Background

The central lifting mechanism of the mahjong machine generally comprises a dice tray, a lifting rod connected with the dice tray, a lifting motor and a transmission mechanism positioned between the lifting motor and the lifting rod. In the prior art, a lifting motor is generally designed in a horizontal manner, that is, the axial direction of an output shaft of the lifting motor is perpendicular to the lifting direction of a lifting rod, a transmission mechanism comprises a swing rod connected with the output shaft of the lifting motor, and the other end of the swing rod drives the lifting rod to lift along with the swinging process of the output shaft of the lifting motor.

The central lifting mechanism with the structure has the defects that the lifting motor is designed horizontally, the position of the lifting motor is positioned outside the orthographic projection position of the lifting rod, and the space occupied by the lifting rod and the lifting motor is large; the driving force applied to the lifting rod by the swing rod is located on the outer side of the lifting rod, so that the lifting rod and the dice tray have overturning moment in the lifting process, smoothness is poor, and consumed power is large.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to solve the corresponding technical defect that the horizontal design of elevator motor of mahjong machine leads to among the prior art.

In order to solve the technical problem, the utility model provides a technical scheme as follows: a central lifting mechanism comprising at least:

the lifting seat is fixedly arranged;

the lifting rod is positioned on the inner side of the lifting seat and is axially and movably connected with the lifting seat;

the dice tray is fixedly connected to the upper end of the lifting rod;

the lifting motor is vertically arranged, and an output shaft of the lifting motor is coaxially arranged with the lifting rod and is positioned below the lifting rod; and

the lifting mechanism comprises a vertical cam, wherein the lower end of the vertical cam is coaxially and fixedly connected with an output shaft of the lifting motor, a cam track surface with height change is arranged on the upper end face of the vertical cam along the circumferential direction, and a supporting part used for being in contact fit with the cam track surface is arranged on the lifting rod.

In a preferred embodiment, the orthogonal projection of the cam track surface is annular.

In a preferred embodiment, a guide mechanism is arranged between the lifting seat and the lifting rod.

In a preferred embodiment, the guiding mechanism comprises at least one guiding convex rib arranged on the outer wall of the lifting rod and a guiding groove arranged on the inner wall of the lifting seat and matched with the guiding convex rib.

In a preferred embodiment, the guide ribs are provided with through grooves inside.

In a preferred embodiment, a spring is disposed between the lifting seat and the lifting rod and configured to be in an energy storage state when the lifting rod is in the high position.

The inner wall of the lifting seat is provided with a spring accommodating cavity, the upper end of the spring accommodating cavity is provided with a limiting cavity bottom, the lower end of the spring accommodating cavity is open, and an opening is formed in one side of the spring accommodating cavity, which faces the lifting rod in the radial direction.

In a preferred embodiment, the lower end of the lifting rod is provided with a support lug matched with the spring accommodating cavity.

A mahjong machine at least comprises the central lifting mechanism.

Compared with the prior art, the central lifting mechanism and the mahjong machine have the following beneficial effects:

(1) the vertical setting of elevator motor, and elevator motor's output shaft and lifter are coaxial, and elevator motor and lifter's projection coincidence are on its projection direction, and shared space is littleer, so make mahjong machine's space utilization higher, the structure is compacter, and the volume is also littleer.

(2) A vertical cam for driving lifter goes up and down and elevator motor's output shaft coaxial fixed connection, elevator motor's output shaft direct drive vertical cam is rotatory to cam orbit face through vertical cam upper end drives the lifter and goes up and down, and the overturning moment that the lifter receives is less, and the power that consumes is less, and then makes elevator motor can adopt the less motor of power, so not only reduced motor cost, and reduced the shared space of elevator motor.

Drawings

Fig. 1 is a schematic perspective view of a central lifting mechanism of the present embodiment;

FIG. 2 is a structural diagram illustrating an exploded state of the central lifting mechanism of the present embodiment;

fig. 3 is a front view of the central elevating mechanism of the present embodiment, in which the dice tray is in a high position;

FIG. 4 is a cross-sectional structural schematic view of the central lift mechanism of FIG. 3;

fig. 5 is a front view of the central elevating mechanism of the present embodiment, in which the dice tray is in a low position;

FIG. 6 is a cross-sectional structural schematic view of the central lift mechanism of FIG. 5;

FIG. 7 is a schematic structural diagram of a lifting seat of the central lifting mechanism of this embodiment;

FIG. 8 is a schematic structural diagram of a lifting rod of the central lifting mechanism of this embodiment;

fig. 9 is a schematic structural diagram of a vertical cam in the central lifting mechanism of the embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, an integral connection, or a detachable connection; may be communication within two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the above terms in the present invention in specific situations.

As shown in fig. 1 to 6, a center lift mechanism of the present embodiment includes a lift base 10, a lift rod 20, a dice tray 40, and a lift motor 30. Wherein, the lifting seat 10 is fixedly arranged and fixedly connected with the rack of the mahjong machine; the lifting rod 20 is located at the inner side of the lifting seat 10 and is axially movably connected with the lifting seat 10, so that the lifting rod can lift relative to the lifting seat 10 along the vertical direction, and the dice disk 40 is fixedly connected to the upper end of the lifting rod 20.

In this embodiment, a guiding mechanism is disposed between the lifting rod 20 and the lifting seat 10. In a preferred embodiment, as shown in fig. 7 and 8, the guiding mechanism includes a pair of oppositely disposed guiding ribs 22 disposed on the outer wall of the lifting rod, and a guiding groove 11 disposed on the inner wall of the lifting seat 10 and adapted to the guiding ribs 22. The lifting precision of the lifting rod is ensured by the arrangement of the guide mechanism.

In the present embodiment, as shown in fig. 8, a through groove 23 is preferably provided in the guide rib 22. The through groove 23 is provided for reducing the weight, saving raw materials and reducing the cost.

As the greatest improvement of the embodiment, the lifting motor 30 is arranged vertically, and the output shaft 31 of the lifting motor 30 is arranged coaxially with the lifting rod 20 and is positioned below the lifting rod 20. After the arrangement, the projection of the lifting motor 30 is superposed with the projection of the lifting rod 20, and the space occupied by the central lifting mechanism is smaller in the projection direction, so that the space utilization rate of the mahjong machine is higher, the structure is more compact, and the volume is smaller.

In the present embodiment, a vertical cam 50 for transmitting a driving force is provided between the lift motor 30 and the lift lever 20, as shown in fig. 9, a connecting portion 52 for coaxial fixed connection with the output shaft 31 of the lift motor 30 is provided at a lower end of the vertical cam 50, and a cam track surface 51 having a height variation is provided at an upper end surface of the vertical cam 50 in a circumferential direction. Accordingly, as shown in fig. 8, the inner wall of the lifter bar 20 is provided with a support portion 21 for contact-fitting with the cam track surface 51.

The working principle is that the lifting motor 30 drives the vertical cam 50 to rotate, and in the rotating process of the vertical cam 50, the height of the position on the cam track surface 51, which is in contact with the supporting part 21, changes, so that the lifting rod is lifted. This vertical cam 50 is as power transmission spare, makes the overturning moment that the lifter received less, and the power that consumes is less, and then makes elevator motor can adopt the less motor of power, so not only reduced motor cost to the shared space of elevator motor has been reduced.

Preferably, in the present embodiment, the orthogonal projection of the cam track surface 51 is annular, so that the weight of the vertical cam is lighter, the used raw material is less, and the cost is lower compared with the solid structure.

In the normal operation of the mahjong machine, as shown in fig. 5 and 6, the central lifting mechanism has the dice tray at a low position and flush with the table top of the mahjong machine, and at this time, the supporting portion 21 is in contact engagement with the lowest position of the cam track surface 51. When the mahjong game is finished and the mahjong tiles need to be shuffled, the lifting motor is started to drive the vertical cam to rotate, the contact position of the supporting part 21 and the cam track surface 51 is changed from the lowest position to the highest position shown in figures 3 and 4, and the mahjong tiles on the table surface of the mahjong machine can be pushed into the mahjong machine to be shuffled. After all the mahjong tiles on the mahjong table are pushed in, the lifting motor is started again, and in the rotating process of the vertical cam, the lifting rod and the dice disk descend under the action of gravity, so that the supporting part 21 is kept in contact with the cam track surface 51 until the state shown in fig. 5 and 6 is achieved.

In this embodiment, in order to make the descending of the dice tray and the lifting bar more reliable, a spring 60 is disposed between the lifting base 10 and the lifting bar 20, and the spring 60 is configured to be in an energy storage state when the lifting bar 20 is in a high position. Therefore, in the descending process of the dice tray, the gravity and the recovery potential energy of the spring act together, and the descending reliability can be guaranteed.

Of course, the spring 60 may be set to either a compressed state or a stretched state.

Preferably, in the present embodiment, the stored energy state of the spring 60 is a compressed state. The specific connection mode is as shown in fig. 6 and 7, a spring accommodating cavity 12 is arranged on the inner wall of the lifting seat 10, a limiting cavity bottom 13 is arranged at the upper end of the spring accommodating cavity 12, the lower end of the spring accommodating cavity 12 is open, an opening is arranged on one side facing the lifting rod in the radial direction, and the width of the opening is set so that the spring 60 can only pass in and out from the lower end opening and cannot pass in and out from the opening side.

Correspondingly, as shown in fig. 6 and 8, the lower end of the lifting rod 20 is provided with a support lug 24 adapted to the spring accommodating cavity. The spring 60 is located between the support lug 24 and the limiting cavity bottom 13, and during the lifting process of the lifting rod, the spring is compressed to store energy, and when the stored energy of the spring is released, the lifting rod can be driven to descend through the support lug 24.

Preferably, the spring accommodating cavity, the spring and the support lug are arranged in pairs for force balance.

In summary, the above description is only a preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. A central lifting mechanism, comprising at least:

the lifting seat is fixedly arranged;

the dice tray is fixedly connected to the upper end of the lifting rod;

2. The central lift mechanism of claim 1 wherein the orthographic projection of the cam track surface is annular.

3. The central lift mechanism of claim 1 wherein a guide mechanism is disposed between the lift platform and the lift rod.

4. The central lifting mechanism according to claim 3, wherein the guiding mechanism comprises at least one guiding rib disposed on an outer wall of the lifting rod and a guiding groove disposed on an inner wall of the lifting seat and adapted to the guiding rib.

5. The central lift mechanism of claim 4 wherein the guide ribs have through slots therein.

6. A central lifting mechanism according to any of claims 1 to 5, wherein a spring is provided between the lifting foot and the lifting rod and is arranged to be in a charged condition when the lifting rod is in the raised position.

7. The central lifting mechanism according to claim 6, wherein the inner wall of the lifting seat is provided with a spring accommodating cavity, the upper end of the spring accommodating cavity is provided with a limiting cavity bottom, the lower end of the spring accommodating cavity is open, and one side of the spring accommodating cavity radially facing the lifting rod is provided with an opening.

8. The central lift mechanism as recited in claim 7 wherein said lift pins are provided at their lower ends with lugs adapted to fit into said spring receiving cavities.

9. A mahjong machine, characterized in that it comprises at least a central lifting mechanism according to any of claims 1-8.