CN109610936B

CN109610936B - Cam and cam rotation position detection device

Info

Publication number: CN109610936B
Application number: CN201811467590.3A
Authority: CN
Inventors: 李洪超; 叶灿; 王亮; 熊晓峰; 陈臻
Original assignee: SF Technology Co Ltd
Current assignee: SF Technology Co Ltd
Priority date: 2018-12-03
Filing date: 2018-12-03
Publication date: 2024-02-23
Anticipated expiration: 2038-12-03
Also published as: CN109610936A

Abstract

The application discloses cam and cam rotation position detection device, the cam, including the cam body, the circumference side of cam body is provided with N first recess, N is the integer that is greater than zero, first recess sets up on the equidistant face of the arbitrary cylindrical surface of axis of rotation as the center pin of cam body, the axis of rotation of cam body is on equidistant face, cam rotation position detection device for detect the cam of any one of claims 1-8, including N+1 micro-gap switch, micro-gap switch's gyro wheel rolls at the circumference side of cam body, arbitrary N micro-gap switch and N first recess joint, the micro-gap switch with first recess joint is in normally closed state, the micro-gap switch with the circumference side contact of cam body between adjacent first recess is in normally open state, the function of electronic lock is convenient for expand.

Description

Cam and cam rotation position detection device

Technical Field

The invention relates to the field of machinery, in particular to the field of mechanical safety, in particular to a cam and a cam rotation position detection device.

Background

The electronic locks on the market have simple and single functions and are not suitable for occasions with higher requirements on performance (such as safety and convenience).

And in the process of improving the function of the electronic lock, a cam can be arranged on the electronic lock, the color disc is fixed on the cam, the color of the color disc exposed out of the electronic lock is changed by rotating the color disc, different colors are used for representing different articles, and in the use process of the color disc, the color of the color disc exposed out of the electronic lock needs to be detected, namely the position of the cam is detected to check whether the articles in the packaging box are consistent.

Disclosure of Invention

It is desirable to provide a cam and a cam rotational position detecting device capable of detecting a cam position.

In a first aspect, the cam of the present invention includes a cam body, wherein N first grooves are provided on a circumferential side surface of the cam body, N is an integer greater than zero, the first grooves are provided on an n+1 bisection plane of an arbitrary cylindrical surface having a rotation axis of the cam body as a central axis, and the rotation axis of the cam body is on the bisection plane.

In a second aspect, the cam rotation position detecting device of the present invention is used for detecting the cam according to any one of claims 1 to 8, and the cam rotation position detecting device comprises n+1 micro switches, wherein the roller of each micro switch rolls on the circumferential side surface of the cam body, any N micro switches are clamped with N first grooves, the micro switches clamped with the first grooves are in a normally closed state, and the micro switches contacted with the circumferential side surface of the cam body between adjacent first grooves are in a normally open state.

According to the technical scheme that this application provided, through setting up N first recess and N+1 micro-gap switch at the circumference side of cam body, at the cam rotation in-process, when N micro-gap switch card advances N first recess, then indicate the cam and rotate the certain position to when the cam in this position, the color of color disc exposure electronic lock is one kind, at this moment, the micro-gap switch that does not in first recess is in the state of opening, certain micro-gap switch is in the state of opening and corresponds to the color of color disc exposure electronic lock, convert the color of color disc exposure electronic lock into the state of micro-gap switch, whether the color of being convenient for follow-up comparison packaged article and color disc exposure electronic lock is unanimous, the function of the electronic lock of being convenient for expands.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:

FIG. 1 is a schematic view of a cam according to an embodiment of the present invention;

FIG. 2 is a schematic view of a cam according to an embodiment of the present invention;

FIG. 3 is a schematic view showing the configuration of the cam rotation position detecting device and the cam according to the embodiment of the present invention;

fig. 4 is a schematic diagram of a cam rotation position detecting device and a cam matching structure according to an embodiment of the present invention.

Detailed Description

The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In one embodiment of the present invention, referring to fig. 1 and 2, the cam of the present invention includes a cam body 10, N first grooves 11 are provided on a circumferential side surface of the cam body 10, N is an integer greater than zero, the first grooves 11 are provided on an n+1 bisecting plane of any cylindrical surface having a rotation axis of the cam body 10 as a central axis, and the rotation axis of the cam body 10 is on the bisecting plane.

In the embodiment of the invention, the cam body and the color disc are fixed, the color disc can rotate along with the cam body, N first grooves are formed in the circumferential side surface of the cam body, the first grooves are formed in the N+1 bisecting surface of any cylindrical surface taking the rotating shaft of the cam body as the central shaft, the rotating shaft of the cam body is arranged on the bisecting surface, the first grooves are matched with the roller of the micro switch in a clamping manner, specifically, the roller of the micro switch can roll on the circumferential side surface of the cam, when the roller of the micro switch moves into the first grooves, the cam can produce clamping, at the moment, the part of the color disc exposed out of the electronic lock is in a single color, only one micro switch is in a normally closed state, the color disc exposed out of the electronic lock is correlated with the state of the micro switch, detection is convenient, the color type on the color disc is consistent with the quantity of the micro switch, namely, the color on the color disc is in N+1, and the clamping sense of the rotating color disc can improve the operation experience of the color disc.

Further, the first groove 11 penetrates the cam body 10 in the direction of the rotation axis of the cam body 10.

In the embodiment of the invention, the first groove penetrates through the cam body along the direction of the rotating shaft of the cam body, and when the roller of the micro-switch moves into the first groove, the roller is prevented from being blocked by the groove edge of the first groove, so that the service life of the micro-switch is prolonged, and the cam rotates more smoothly.

Further, the first groove 11 is a semi-cylindrical first groove, and a central axis of the first groove 11 is parallel to the rotation axis of the cam body 10.

In the embodiment of the invention, the first groove is a semi-cylindrical first groove, the central axis of the first groove is parallel to the rotation axis of the cam body, when the roller of the micro switch moves into the first groove, the roller can be attached to the first groove as much as possible, the abrasion of the roller by the first groove is reduced, and when the roller rolls out of the first groove, the first groove can not generate larger blocking force on the roller, so that the roller is convenient to separate from the first groove, and the cam can rotate more smoothly.

Further, the first groove 11 intersects with the side surface of the cam body 10 to form a first groove side 12 and a second groove side 13, and the first groove side 12 and the second groove side 13 are sequentially arranged in the rotation direction of the cam body 10, and the distance between the second groove side 13 and the rotation axis of the cam body 10 is greater than the distance between the first groove side 12 and the rotation axis of the cam body 10.

In the embodiment of the invention, when the roller of the micro switch moves into the first groove, the roller is more difficult to separate from the first groove from the side of the second groove side than the roller is difficult to separate from the first groove from the side of the first groove side, so that a user can easily rotate the cam towards one direction when rotating the cam, and the service life of the micro switch can be prolonged.

Further, n+1 protrusions 20 are provided on the top surface or the bottom surface of the cam body 10 at intervals, and a second groove 21 is formed between adjacent protrusions 20, and the second groove 21 is provided on an n+1 bisecting plane of any cylindrical surface having the rotation axis of the cam body 10 as the center axis.

In the embodiment of the invention, when the color of the color disc is adjusted, the cam can be locked by being blocked in the second grooves by other mechanisms to prevent the cam from rotating, the number of the second grooves is also N+1, and the cam can be locked by the second grooves when the N microswitches roll into the N first grooves.

Further, the first grooves 11 are provided between the adjacent protrusions 20.

In the embodiment of the invention, the first grooves are arranged between the adjacent bulges, so that the interference between the first grooves and the bulges can be avoided, the processing difficulty of the cam is reduced, and the cam structure is more reasonable.

Further, the width of the second groove 21 on the side far from the rotation axis of the cam body 10 is larger than the width of the second groove 21 on the side near to the rotation axis of the cam body 10.

In the embodiment of the invention, the locking mechanism is convenient to be matched with the second groove to lock the position of the cam, so that the locking efficiency is improved.

Further, adjacent first grooves 11 are connected through cambered surfaces.

In the embodiment of the invention, the roller of the micro switch conveniently rolls on the circumferential side surface of the cam, the friction between the cam and the roller is reduced, the service life of the micro switch is prolonged, and meanwhile, the operation experience of a user is improved by enabling the roller to be smoother when the cam is rotated.

In another embodiment of the present invention, referring to fig. 3 and 4, the cam rotation position detecting device is configured to detect the rotation position of the cam, and includes n+1 micro switches 30, where a roller 31 of the micro switch 30 rolls on the circumferential side surface of the cam body 10, any N micro switch 30 is engaged with N first grooves 11, the micro switch 30 engaged with the first grooves 11 is in a normally closed state, and the micro switch 30 contacting with the circumferential side surface of the cam body 10 between adjacent first grooves 11 is in a normally open state.

In the embodiment of the invention, when the cam rotates, the roller of the micro switch rolls on the circumferential side surface of the cam body, when N micro switches roll into N first grooves, the cam can generate blocking, the cam rotates to receive resistance, at the moment, the part of the color disc exposed out of the electronic lock is single color, and also one micro switch is arranged on the circumferential side surface of the cam body between the adjacent first grooves, the micro switch is in a normally closed state, the rotating position of the cam can be obtained by detecting the signal of the micro switch, the color of the color disc exposed out of the electronic lock is related with the state of the micro switch, the detection is convenient, and the color type on the color disc is consistent with the quantity of the micro switches, namely, the color on the color disc has N+1, and the blocking feeling of the rotating color disc can improve the operation experience of the color disc.

Further, the roller of the micro switch 30 is locked in the first groove 11, and the rotation shaft of the micro switch pressing piece 32 is disposed at the same side of the first groove 11 matched with the micro switch roller 31.

In the embodiment of the invention, the roller of the micro switch is clamped into the first groove, the rotating shaft of the micro switch pressing piece is arranged on the same side of the first groove matched with the roller of the micro switch, namely, when the cam rotates along one direction, the pressing pieces of the micro switches are ensured to be either all pulled or all pressed, and a rotating prompt button is arranged on the electronic lock shell to remind a user how to rotate the cam, so that the cam can rotate along the direction that the pressing pieces are pulled, and the service life of the micro switch is prolonged.

Further, the roller 31 of the micro switch is clamped into the first groove 11, and an angle between a line between a groove edge of the first groove 11, which is far away from the rotating shaft of the micro switch pressing piece 32, and the rotating shaft of the pressing piece 32 and a tangent line of the groove edge of the first groove 11, which is far away from the rotating shaft of the micro switch pressing piece 32, is greater than or equal to 90 degrees.

In the embodiment of the invention, when the roller of the micro switch is clamped into the first groove, the cam can only rotate along one direction, and when the cam rotates along the direction, the pressing piece is pulled, so that the service life of the micro switch is prolonged.

The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.

Claims

1. The cam is characterized by comprising a cam body, wherein N first grooves are formed in the circumferential side surface of the cam body, N is an integer larger than zero, the first grooves are formed in an N+1 bisection surface of any cylindrical surface taking a rotating shaft of the cam body as a central shaft, and the rotating shaft of the cam body is arranged on the bisection surface;

the first groove is intersected with the side surface of the cam body to form a first groove edge and a second groove edge, the first groove edge and the second groove edge are sequentially arranged in the rotating direction of the cam body, and the distance between the second groove edge and the rotating shaft of the cam body is larger than the distance between the first groove edge and the rotating shaft of the cam body;

the cam comprises a cam body, wherein the top surface or the bottom surface of the cam body is provided with N+1 bulges at intervals, second grooves are formed between adjacent bulges, and the second grooves are formed on N+1 bisectors of any cylindrical surface taking a rotating shaft of the cam body as a central shaft.

2. The cam of claim 1, wherein the first groove extends through the cam body in a direction of a rotational axis of the cam body.

3. The cam of claim 1, wherein the first groove is a semi-cylindrical first groove, a central axis of the first groove being parallel to a rotational axis of the cam body.

4. The cam of claim 1, wherein the first groove is disposed between adjacent ones of the lobes.

5. The cam of claim 1, wherein a width of a side of the second groove away from the cam body rotational axis is greater than a width of a side of the second groove closer to the cam body rotational axis.

6. The cam of claim 1, wherein adjacent ones of the first grooves are connected by a cambered surface.

7. A cam rotation position detection device, characterized by being used for detecting the rotation position of a cam according to any one of claims 1-6, comprising n+1 microswitches, wherein a roller of each microswitch rolls on the circumferential side surface of a cam body, any N of the microswitches are clamped with N first grooves, the microswitches clamped with the first grooves are in a normally closed state, and the microswitches contacted with the circumferential side surface of the cam body between adjacent first grooves are in a normally open state.

8. The cam turning position detecting apparatus according to claim 7, wherein the roller of the micro switch is caught in the first groove, and the rotation shaft of the micro switch pressing piece is disposed on the same side of the first groove as the roller of the micro switch.

9. The cam turning position detecting apparatus according to claim 8, wherein an angle between a line connecting a groove side of the first groove which is farther from the rotational axis of the micro switch pressing piece and the rotational axis of the pressing piece and a tangent line of the groove side of the first groove which is farther from the rotational axis of the micro switch pressing piece is 90 degrees or more.