阅读说明：本技术 一种机械式物理天平启动机构装置 (Mechanical physical balance starting mechanism device ) 是由 李大伟 赵丽 陈涛 郭广寒 伊淼 刘庚 王暄 于 2021-09-09 设计创作，主要内容包括：一种机械式物理天平启动机构装置,涉及量器领域。为解决现有的物理天平启动旋钮频繁操作,导致启动旋钮连接轴上的天平挺杆支臂销磨损严重、折弯甚至折断,从而减少了物理天平使用寿命问题。启动钮连接轴的一端与启动钮连接,启动钮连接轴的另一端穿过天平底座通孔之后,与星型凸轮的中心孔固定连接,星型凸轮的一侧设有凸台,且凸台的外表面上加工有半圆形凹槽轨道,且半圆形凹槽轨道外表面上均匀的设有多个末端天平挺杆停止孔位,且天平的挺杆的底部与末端天平挺杆停止孔位内部底端接触。本发明适用于量器领域。(A mechanical physical balance starting mechanism device relates to the field of measuring instruments. The balance tappet support arm pin on the starting knob connecting shaft is seriously abraded, bent or even broken due to frequent operation of the starting knob of the conventional physical balance, so that the service life of the physical balance is shortened. One end and the start button of start button connecting axle are connected, and after the other end of start button connecting axle passed balance base through-hole, with the centre bore fixed connection of star type cam, one side of star type cam was equipped with the boss, and processing has semi-circular groove track on the surface of boss, and evenly on the semi-circular groove track surface be equipped with a plurality of terminal balance tappets and stop the hole site, and the bottom and the terminal balance tappet of the tappet of balance stop the inside bottom contact of hole site. The invention is applicable to the field of measuring instruments.)

1. A mechanical type physical balance actuating mechanism device which characterized in that: the starting device comprises a star cam (100), a starting button connecting shaft (101) and a starting button (102);

one end of a starting button connecting shaft (101) is connected with a starting button (102), the other end of the starting button connecting shaft (101) penetrates through a balance base through hole (104) and then is fixedly connected with a center hole (100-1) of a star-shaped cam (100), a boss is arranged on one side of the star-shaped cam (100), a semicircular groove track (100-2) is processed on the outer surface of the boss, n tail end balance tappet stopping hole positions (100-3) are uniformly arranged on the outer surface of the semicircular groove track (100-2), n is a positive integer, and the bottom of a tappet (103) of a balance is in contact with the inner bottom end of the tail end balance tappet stopping hole position (100-3).

2. The mechanical physical balance actuating mechanism device according to claim 1, wherein: the number n of the tail end balance tappet stopping hole positions (100-3) is more than or equal to 10 and less than or equal to 20.

3. The mechanical physical balance actuating mechanism device according to claim 1, wherein: two locking holes (100-6) are machined in the other side of the star cam (100), and the two locking holes (100-6) are symmetrically arranged.

4. The mechanical physical balance actuating mechanism device according to claim 3, wherein: a limiting spring (100-4) is arranged in each locking hole (100-6), and a limiting steel ball (100-5) is arranged at the top of the limiting spring (100-4).

5. The mechanical physical balance actuating mechanism device according to claim 1, wherein: an arc-shaped groove track (104-1) is processed on the end face of the balance base through hole (104), k semi-submersible balance tappet stop holes (104-2) are arranged in the arc-shaped groove track (104-1) along the circumferential direction, and k is a positive integer.

6. The mechanical physical balance actuating mechanism device according to claim 4, wherein: the outer surface of the limiting steel ball (100-5) is in contact with the inner wall of a semi-submersible balance tappet stopping hole (104-2) on the end face of the balance base through hole (104).

7. The mechanical physical balance actuating mechanism device according to claim 5, wherein: the number k of the semi-submersible balance tappet stopping holes (104-2) is more than or equal to 10 and less than or equal to 20.

Technical Field

The invention relates to the field of measuring instruments, in particular to a mechanical physical balance starting mechanism device.

Background

The balance is an instrument for weighing the mass of an object, and commonly used are an analytical balance, a physical balance, a student balance (simple physical balance), a tray balance and the like. The physical balance is the most basic and commonly used instrument in college physical experiments, is manufactured by utilizing the principle that the forces acting on equal force arms are equal when a lever is balanced, and mainly comprises a vernier, a scale, a balance nut, a bottom plate, an index plate, a beam pointer, a plumb line and the like.

People often can be through the frequent start-up of start knob and closing physical balance when using physical balance, if adjust balance, add and subtract the testee, weigh the object in-process add and subtract the weight, the adjusting etc. of loose code position, so physical balance uses often can lead to the balance tappet support arm pin on the start knob connecting axle to wear seriously, bend even break because of the frequent operation of start knob after a period, this is with regard to the greatly reduced balance life. Therefore, in order to better ensure the accuracy of the measurement result and prolong the service life of the balance, the technical improvement of the mechanical structure of the part becomes more important through the research on the design principle of the physical balance and related theories. The method has important scientific significance and practical value in the technical fields of colleges and universities, biology, medicine, scientific research and the like.

In conclusion, the conventional physical balance starting knob is frequently operated, so that a balance tappet support arm pin on a starting knob connecting shaft is seriously abraded, bent or even broken, and the service life of the physical balance is shortened.

Disclosure of Invention

The invention provides a mechanical physical balance starting mechanism device, aiming at solving the problems that a balance tappet support arm pin on a starting knob connecting shaft is seriously abraded, bent and even broken due to frequent operation of a starting knob of the existing physical balance, so that the service life of the physical balance is shortened.

The invention relates to a mechanical physical balance starting mechanism device, which comprises a star cam, a starting button connecting shaft and a starting button, wherein the starting button connecting shaft is connected with the starting button;

one end of a starting button connecting shaft is connected with a starting button, the other end of the starting button connecting shaft penetrates through a balance base through hole and then is fixedly connected with a center hole of a star-shaped cam, a boss is arranged on one side of the star-shaped cam, a semicircular groove rail is machined on the outer surface of the boss, n tail end balance tappet stopping hole positions are uniformly arranged on the outer surface of the semicircular groove rail, n is a positive integer, and the bottom of a tappet of a balance is in contact with the bottom end inside the tail end balance tappet stopping hole position;

furthermore, the number n of the stop hole positions of the tail end balance tappet rods is more than or equal to 10 and less than or equal to 20;

furthermore, two locking holes are processed on the other side of the star cam and are symmetrically arranged;

furthermore, a limiting spring is arranged in each locking hole, and a limiting steel ball is arranged at the top of each limiting spring;

furthermore, an arc-shaped groove track is processed on the end face of the balance base through hole, k semi-submersible balance tappet stopping holes are formed in the arc-shaped groove track along the circumferential direction, and k is a positive integer;

furthermore, the outer surface of the limiting steel ball is in contact with the inner wall of a stop hole of a semi-submersible balance tappet on the end surface of a through hole of the balance base;

furthermore, the number k of the semi-submersible balance tappet stopping holes is more than or equal to 10 and less than or equal to 20;

furthermore, when the balance is used, the start knob is rotated to drive the star-shaped cam to enable the tappet of the balance to move up and down in the vertical direction, so that the balance can be started and closed. The device not only has flexible and simple operation, excellent safety and high reliability, but also reduces the mutual abrasion among parts in the frequent operation process, and further prolongs the service life of the physical balance.

Compared with the prior art, the invention has the following beneficial effects:

the invention overcomes the defects of the prior art, one end of a starting button connecting shaft is connected with a starting button, the other end of the starting button connecting shaft penetrates through a balance base through hole and then is fixedly connected with a central hole of a star-shaped cam, one side of the star-shaped cam is provided with a boss, a semicircular groove track is processed on the outer surface of the boss, a plurality of tail end balance tappet stopping hole positions are uniformly arranged on the outer surface of the semicircular groove track, the bottom of a tappet of a balance is contacted with the bottom end inside the tail end balance tappet stopping hole positions, and the balance is started and closed by rotating the starting button to drive the star-shaped cam to enable the tappet of the balance to move up and down in the vertical direction. The device not only has flexible and simple operation, excellent safety and high reliability, but also reduces the mutual abrasion among parts in the frequent operation process and prolongs the service life of the physical balance.

Drawings

FIG. 1 is a side cross-sectional view of an actuator assembly for a mechanical physical balance according to the present invention;

FIG. 2 is a side view of a star cam in a mechanical physical balance actuator assembly according to the present invention;

FIG. 3 is a front view of a star cam in the actuator assembly of a mechanical physical balance according to the present invention;

FIG. 4 is a front cross-sectional view of the balance base through hole of the mechanical physical balance actuator assembly according to the present invention;

fig. 5 is a side view of the balance base through hole of the mechanical physical balance actuating mechanism device according to the present invention.

Detailed Description

The first embodiment is as follows: the present embodiment is described with reference to fig. 1 to 5, and the mechanical physical balance actuating mechanism device of the present embodiment includes a star cam 100, an actuating button connecting shaft 101, and an actuating button 102;

one end of a starting button connecting shaft 101 is connected with a starting button 102, the other end of the starting button connecting shaft 101 penetrates through a balance base through hole 104 and then is fixedly connected with a central hole 100-1 of a star-shaped cam 100, a boss is arranged on one side of the star-shaped cam 100, a semicircular groove track 100-2 is processed on the outer surface of the boss, n tail end balance tappet stopping hole positions 100-3 are uniformly arranged on the outer surface of the semicircular groove track 100-2, n is a positive integer, and the bottom of a balance tappet 103 of a balance is in contact with the bottom end inside the tail end tappet stopping hole position 100-3;

in the embodiment, when the balance is used, the start knob 102 is rotated to drive the star-shaped cam 100 to enable the tappet 103 of the balance to move up and down in the vertical direction, so that the balance can be started and closed. The device not only has flexible and simple operation, excellent safety and high reliability, but also reduces the mutual abrasion among parts in the frequent operation process, and further prolongs the service life of the physical balance.

The second embodiment is as follows: the present embodiment will be described with reference to fig. 2, which is a further limitation of the balance actuating mechanism device according to the first embodiment, and in the mechanical physical balance actuating mechanism device according to the present embodiment, the number n of the end balance tappet stop holes 100-3 is n, n is 10 ≦ n ≦ 20.

The third concrete implementation mode: the present embodiment is described with reference to fig. 3, and is a further limitation of the balance actuating mechanism device according to the first embodiment, and in the mechanical physical balance actuating mechanism device according to the present embodiment, two locking holes 100-6 are formed on the other side of the star cam 100, and the two locking holes 100-6 are symmetrically arranged.

The fourth concrete implementation mode: referring to fig. 3, this embodiment is a further limitation of the balance actuating mechanism device according to the third embodiment, and in the mechanical physical balance actuating mechanism device according to this embodiment, a limiting spring 100-4 is disposed inside each of the locking holes 100-6, and a limiting steel ball 100-5 is disposed on the top of the limiting spring 100-4.

The fifth concrete implementation mode: the present embodiment is described with reference to fig. 4, and is a further limitation of the balance actuating mechanism device according to the first embodiment, in the mechanical physical balance actuating mechanism device according to the present embodiment, an arc-shaped groove rail 104-1 is processed on an end surface of the balance base through hole 104, and k semi-submersible balance tappet stop holes 104-2 are circumferentially provided in the arc-shaped groove rail 104-1, where k is a positive integer.

The sixth specific implementation mode: the present embodiment is described with reference to fig. 1 and 2, and the present embodiment further defines the balance actuating mechanism device according to the fourth embodiment, in the mechanical physical balance actuating mechanism device according to the present embodiment, the outer surface of the position-limiting steel ball 100-5 contacts with the inner wall of the semi-submersible balance tappet stop hole 104-2 on the end surface of the balance base through hole 104;

in the specific embodiment, the outer surface of the limiting steel ball 100-5 is in contact with the inner wall of the semi-submersible balance tappet stopping hole 104-2 on the end face of the balance base through hole 104, so that the limiting effect on the device is achieved.

The seventh embodiment: the present embodiment will be described with reference to fig. 4, which is a balance actuating mechanism according to the fifth embodiment, and in the mechanical physical balance actuating mechanism according to the present embodiment, the number k of the semi-submersible balance tappet stopping holes 104-2 is 10 ≦ k ≦ 20.

Principle of operation

When the balance is used, the start knob 102 is rotated to drive the star-shaped cam 100 to enable the tappet 103 of the balance to move up and down in the vertical direction, and therefore the purpose of starting and closing the balance is achieved. The device not only has flexible and simple operation, excellent safety and high reliability, but also reduces the mutual abrasion among parts in the frequent operation process, and further prolongs the service life of the physical balance.