Key ring type counter

Abstract

The utility model provides a key ring type counter, which belongs to the technical field of counting equipment and comprises a lower shell, an upper shell and a lower shell, the upper shell is arranged at the top end of the lower shell and is detachably connected with the lower shell; the MCU is arranged between the lower shell and the upper shell; the battery hardware sheet is arranged in the battery compartment; the button battery is arranged in the battery hardware sheet and is connected with the MCU; the battery cover is arranged on the back of the lower shell, and the battery compartment is detachably connected; the quartz crystal oscillator is arranged between the lower shell and the upper shell and is connected with the MCU; the display screen is arranged on the front surface of the upper shell and is connected with the MCU; the transparent protective plate is arranged on the front surface of the upper shell and covers the display screen; the silica gel key is arranged on the front surface of the upper shell and is connected with the MCU; the key cap is arranged at the top end of the silica gel key; the film key is arranged on the front surface of the upper shell and is connected with the MCU; and the compass is arranged at the top end of the film key. The utility model has the advantages that the timing reliability of the counter is greatly improved, and the user experience is further greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of counting equipment technology, and specifically to a keychain-type counter. Background Technology

[0002] Currently, prayer beads, also known as rosaries, are traditionally used by silently counting the number of beads that have turned on a bracelet. However, people often forget the number they have counted while counting, which can create a psychological burden. With the advancement of technology, electronic counters for prayer beads have emerged.

[0003] In addition to counting, electronic counters also have timing functions, such as recording the time taken to count 1000 times or displaying the current time. However, traditional electronic counters often develop timing deviations after prolonged operation, requiring frequent calibration and severely impacting the user experience.

[0004] Therefore, how to provide a keychain-style counter that improves the reliability of the counter's timing and thus enhances the user experience has become a pressing technical problem. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a keychain-type counter that improves the reliability of the counter's timing and thus enhances the user experience.

[0006] This utility model is implemented as follows: a keychain-type counter, comprising:

[0007] A lower casing with a battery compartment on the back and a key ring attached to the bottom via a chain;

[0008] An upper housing is located at the top of the lower housing and is detachably connected to the lower housing by screws;

[0009] An MCU is located between the lower housing and the upper housing;

[0010] A battery hardware plate is disposed inside the battery compartment;

[0011] A button battery is disposed within the battery hardware plate and connected to the MCU;

[0012] A battery cover is located on the back of the lower housing and is detachably connected to the battery compartment;

[0013] A quartz crystal oscillator is located between the lower housing and the upper housing and is connected to the MCU;

[0014] A display screen is located on the front of the upper housing and is connected to the MCU via a conductive strip;

[0015] A transparent protective plate is provided on the front of the upper housing and covers the display screen;

[0016] A silicone button is located on the front of the upper housing and is connected to the MCU;

[0017] A keycap is provided at the top of the silicone key;

[0018] A membrane button is located on the front of the upper housing and is connected to the MCU;

[0019] A compass is located at the top of the membrane key;

[0020] A decorative cover is detachably attached to the front of the upper housing and exposes the transparent protective panel, keycaps, and compass.

[0021] Furthermore, it also includes:

[0022] A buzzer is located between the lower housing and the upper housing and is connected to the MCU.

[0023] Furthermore, it also includes:

[0024] A belt is located on the back of the battery cover.

[0025] The advantages of this utility model are:

[0026] 1. By setting up a counter including an MCU, a button battery, a quartz crystal oscillator, a display screen, silicone buttons, membrane buttons, and a buzzer, with the MCU connected to each of these components, the quartz crystal oscillator provides a high-precision and high-stability clock signal to the MCU. The MCU uses the clock signal provided by the quartz crystal oscillator to keep time and display it on the display screen, or announce it through the buzzer. Compared to traditional counters without a quartz crystal oscillator, this greatly improves the reliability of the counter's timing, thereby significantly enhancing the user experience.

[0027] 2. By setting a leather strap on the back of the battery cover and a hanging chain at the bottom of the lower housing to connect to a key ring, the counter can be carried by the leather strap or key ring, greatly improving the convenience of carrying the counter.

[0028] 3. By incorporating a compass and a buzzer, the counter also features position indication and voice announcement functions, greatly enhancing its functionality. Attached Figure Description

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Figure 1This is a schematic diagram of the structure of a keychain-type counter according to this utility model.

[0031] Figure 2 This is one of the front views of a keychain-type counter according to this utility model.

[0032] Figure 3 This is the second front view of a keychain-type counter according to this utility model.

[0033] Figure 4 This is a rear view of a keychain-type counter according to this utility model.

[0034] Figure 5 This is a side view of a keychain-type counter according to this utility model.

[0035] Figure 6 This is a top view of a keychain-type counter according to this utility model.

[0036] Figure 7 This is a bottom view of a keychain-type counter according to this utility model.

[0037] Figure 8 This is an exploded view of a keychain-type counter according to this utility model.

[0038] Figure 9 This is one of the structural schematic diagrams of the decorative cover of this utility model.

[0039] Figure 10 This is the second structural schematic diagram of the decorative cover of this utility model.

[0040] Figure 11 This is a circuit block diagram of a key fob counter according to this utility model.

[0041] Marker explanation:

[0042] 100-A keychain-type counter, 1-Lower housing, 2-Upper housing, 3-MCU, 4-Battery hardware sheet, 5-Button battery, 6-Battery cover, 7-Quartz crystal oscillator, 8-Display screen, 9-Transparent protective plate, 10-Silicone key, 20-Keycap, 30-Membrane key, 40-Compass, 50-Decorative cover, 60-Buzzer, 70-Belt, 11-Battery compartment, 12-Hanging chain, 13-Keychain, 21-Screw, 81-Conductive strip. Detailed Implementation

[0043] This utility model embodiment provides a keychain-type counter 100, which solves the technical problem in the prior art that electronic counters often have timing deviations after long-term operation, requiring frequent calibration and seriously affecting the user experience. It achieves a significant improvement in the reliability of counter timing, thereby greatly enhancing the user experience.

[0044] The technical solution in this embodiment of the utility model is to solve the above problems. The overall idea is as follows: set the quartz crystal oscillator 7 to provide the MCU3 with a high-precision and high-stability clock signal. The MCU3 performs timing based on the clock signal provided by the quartz crystal oscillator 7 and displays it on the display screen 8 to improve the reliability of the counter 100 timing.

[0045] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0046] Please refer to Figures 1 to 11 As shown, a preferred embodiment of the keychain-type counter 100 of this utility model includes:

[0047] A lower housing 1 has a battery compartment 11 on the back, and a key ring 13 is connected to the bottom end by a hanging chain 12; the battery compartment 11 is used to install battery hardware 4.

[0048] An upper housing 2 is located at the top of the lower housing 1 and is detachably connected to the lower housing 1 by screws 21; the upper housing 2 and the lower housing 1 are used to provide safety protection for the counter 100;

[0049] An MCU3 is located between the lower housing 1 and the upper housing 2 to control the operation of the counter 100. In specific implementation, any MCU that can perform this function can be selected from the existing technology, and it is not limited to any particular model. For example, the STM32F103 series MCU from STMicroelectronics. Moreover, the control program is well known to those skilled in the art, and it can be obtained by those skilled in the art without creative effort.

[0050] A battery hardware piece 4 is disposed in the battery compartment 11 for installing the button battery 5;

[0051] A button battery 5 is disposed inside the battery hardware plate 4 and connected to the MCU3 to power the counter 100;

[0052] A battery cover 6 is located on the back of the lower housing 1 and is detachably connected to the battery compartment 11 for replacing the button battery 5;

[0053] A quartz crystal oscillator 7 is located between the lower housing 1 and the upper housing 2 and is connected to the MCU3 to provide the MCU3 with a high-precision and high-stability clock signal;

[0054] A display screen 8 is located on the front of the upper housing 2 and is connected to the MCU 3 via a conductive strip 81. It is used to display the counting result, the current time, or the counting duration.

[0055] A transparent protective plate 9 is disposed on the front of the upper housing 2 and covers the display screen 8 to provide protection for the display screen 8;

[0056] A silicone button 10 is located on the front of the upper housing 2 and connected to the MCU 3 for press counting;

[0057] A keycap 20 is disposed on the top of the silicone key 10;

[0058] A membrane button 30 is located on the front of the upper housing 2 and connected to the MCU 3, used to turn the counter 100 on or off;

[0059] A compass 40 is located at the top of the membrane key 30 for indicating position;

[0060] A decorative cover 50 is detachably connected to the front of the upper housing 2, exposing the transparent protective plate 9, keycap 20, and compass 40.

[0061] Also includes:

[0062] A buzzer 60 is located between the lower housing 1 and the upper housing 2 and is connected to the MCU 3 to announce the counting results and time.

[0063] Also includes:

[0064] A belt 70 is located on the back of the battery cover 6 for carrying the counter 100.

[0065] Working principle of this utility model:

[0066] Holding the counter 100, hooking the keychain 13 with the little finger, or wearing the counter 100 on the finger via the belt 70, pressing down on the compass 40 and then pressing the membrane button 30 to perform the power-on action, the MCU3 counts based on the trigger signal of the keycap 20 pressing the silicone button 10, and displays the counting result on the display screen 8, and announces the counting result through the buzzer 60.

[0067] In summary, the advantages of this utility model are as follows:

[0068] 1. By setting up a counter including an MCU, a button battery, a quartz crystal oscillator, a display screen, silicone buttons, membrane buttons, and a buzzer, with the MCU connected to each of these components, the quartz crystal oscillator provides a high-precision and high-stability clock signal to the MCU. The MCU uses the clock signal provided by the quartz crystal oscillator to keep time and display it on the display screen, or announce it through the buzzer. Compared to traditional counters without a quartz crystal oscillator, this greatly improves the reliability of the counter's timing, thereby significantly enhancing the user experience.

[0069] 2. By setting a leather strap on the back of the battery cover and a hanging chain at the bottom of the lower housing to connect to a key ring, the counter can be carried by the leather strap or key ring, greatly improving the convenience of carrying the counter.

[0070] 3. By incorporating a compass and a buzzer, the counter also features position indication and voice announcement functions, greatly enhancing its functionality.

[0071] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A key fob type counter, characterized by: The utility model relates to a key chain, which comprises: a lower shell, which is provided with a battery compartment at the back and is connected with a key ring through a hanging chain at the bottom end; an upper shell, which is arranged at the top end of the lower shell and is detachably connected with the lower shell through screws; an MCU, which is arranged between the lower shell and the upper shell; a battery hardware, which is arranged in the battery compartment; a button cell, which is arranged in the battery hardware and is connected with the MCU; a battery cover, which is arranged at the back of the lower shell and is detachably connected with the battery compartment; a quartz crystal oscillator, which is arranged between the lower shell and the upper shell and is connected with the MCU; a display screen, which is arranged on the front of the upper shell and is connected with the MCU through a conductive strip; a transparent protective plate, which is arranged on the front of the upper shell and covers the display screen; a silica gel key, which is arranged on the front of the upper shell and is connected with the MCU; a key cap, which is arranged at the top end of the silica gel key; a film key, which is arranged on the front of the upper shell and is connected with the MCU; a compass, which is arranged at the top end of the film key; a decorative cover, which is detachably connected with the front of the upper shell and exposes the transparent protective plate, the key cap and the compass.

2. A key fob type counter as defined in claim 1, wherein: Further comprising: a buzzer, which is arranged between the lower shell and the upper shell and is connected with the MCU.

3. A key fob type counter as defined in claim 1, wherein: Further comprising: a belt, which is arranged at the back of the battery cover.

Images