Timing and counting device easy to assemble
By designing an easy-to-assemble timing and counting device, using snap-fit connections, screw fixation, and magnetic adsorption, the problem of cumbersome assembly of existing devices is solved, enabling rapid assembly and disassembly, improving production efficiency and reducing costs.
Patent Information
- Application Number
- CN202520231083.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-13
AI Technical Summary
Existing infrared sensor-based timing and counting devices are cumbersome and time-consuming to assemble, causing inconvenience to users.
A timing and counting device comprising components such as a first housing, a second housing, a bottom cover, a PCB board, a rechargeable battery, an infrared sensor, and a light guide plate was designed. It can be quickly assembled and disassembled through snap-fit connections, screw fixation, and magnetic adsorption.
It improves the assembly efficiency of the timing and counting device, reduces production costs, and makes assembly and disassembly more convenient and faster.
Smart Images
Figure CN223770641U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of infrared sensor technology, and in particular to a timing and counting device that is easy to assemble. Background Technology
[0002] The timing and counting principles of infrared sensors are primarily based on the emission and reception of infrared light. An infrared sensor typically consists of two parts: a transmitter and a receiver. The transmitter emits infrared light, and the receiver receives the infrared signal reflected by objects. When an object passes by, it blocks the propagation path of the infrared light, causing a change in the signal received by the receiver, thus triggering the timing or counting function. Examples of infrared sensors used in sports include those for timing running and counting pull-ups.
[0003] Timing Principle: In sports competitions, infrared photoelectric timing systems are widely used in events such as sprints. When an athlete touches the back edge of the finish line, the infrared light is blocked. The infrared sensor detects this change and outputs an electrical signal to the control computer. The computer then stops timing and records the athlete's time. This timing method is simple and fast, but it has some limitations. For example, if the athlete blocks the infrared light with their arm, it may cause timing errors.
[0004] Counting principle: In long-distance races such as marathons, infrared sensor gates or infrared sensors are used to record the time points when athletes pass through them. When an athlete passes through a sensor gate, the infrared sensor detects an obstruction and records that time point, thus enabling the timing and performance recording of the athlete.
[0005] Real-world application scenarios
[0006] In sprint races: Infrared photoelectric timing systems are widely used in sprint races. The system includes a starting gun, an optical timing unit, and an optical detector. After the starting gun fires, the optical timing unit begins timing; when the athlete touches the infrared beam at the finish line, the timing stops, and the results display immediately shows the athlete's race time.
[0007] Marathon races: In high-level marathons, in addition to traditional infrared sensor gates, cameras or GPS satellite positioning systems are used to assist in timing. These high-tech devices can record runners' results more accurately and quickly, ensuring the fairness and accuracy of the race.
[0008] However, most of the existing infrared sensor-based timing and counting devices on the market are cumbersome and time-consuming to assemble. Utility Model Content
[0009] The main purpose of this invention is to propose an easy-to-assemble timing and counting device, which aims to solve the technical problem that the existing infrared sensor-based timing and counting devices are cumbersome to assemble and disassemble, which is time-consuming and labor-intensive and causes inconvenience to users.
[0010] To achieve the above objectives, the present invention proposes an easy-to-assemble timing and counting device, comprising a first housing, a second housing, a bottom cover, a PCB board, a rechargeable battery, a first infrared sensor, a second infrared sensor, a light guide plate, a power switch button, a power indicator light, and a charging interface. The first housing is detachably mounted on the front end of the second housing, and the bottom cover is detachably mounted on the bottom of the first and second housings. The PCB board is detachably mounted inside the first housing by screws. The rechargeable battery is mounted inside the second housing. The first infrared sensor is embedded in the front wall of the first housing. The second infrared sensor, the power switch button, the power indicator light, and the charging interface are respectively mounted on the rear wall of the second housing. The upper end of the front wall of the first housing has a recessed slot with an arc-shaped structure. The light guide plate is detachably mounted in the slot. The first housing contains LED beads, which are located inside the light guide plate. The rechargeable battery, the first infrared sensor, the second infrared sensor, the LED beads, the power switch button, the power indicator light, and the charging interface are all electrically connected to the PCB board.
[0011] Optionally, a first limiting plate and a second limiting plate are respectively provided on the top and both sides of the rear end wall of the first housing, and a connecting plate is respectively provided on the top and both sides of the front end wall of the second housing. The front end of the connecting plate is respectively provided with a first slot, and the first limiting plate and the second limiting plate are respectively embedded in the first slot.
[0012] Optionally, a buckle plate is provided on each side of the rear end wall of the first housing, and a plurality of first L-shaped buckle grooves are provided on the outer side wall of the buckle plate along the length direction. A plurality of buckle protrusions and a first support plate are provided on both sides of the front end wall of the second housing. The buckle protrusions are detachably embedded in the first L-shaped buckle grooves. The front end of the first support plate is respectively recessed with a first L-shaped limiting groove, and the first L-shaped limiting grooves are respectively abutted against the buckle plate.
[0013] Optionally, it also includes fastening screws. The lower end of the first housing is provided with two first threaded holes, the lower end of the second housing is provided with a second threaded hole, and the bottom cover is recessed with a plurality of screw holes. The fastening screws are respectively inserted through the screw holes and screwed into the first threaded hole and the second threaded hole.
[0014] Optionally, a second L-shaped latching groove is provided on both sides of the upper end of the rear end of the first housing, and a first elastic latching arm is provided on both sides of the lower end wall of the light guide plate. The first elastic latching arms are detachably and fixedly connected to the second L-shaped latching groove.
[0015] Optionally, a second support plate is provided on both sides of the upper end of the rear end of the first housing, and a second L-shaped limiting groove is provided on the upper end of the second support plate. A second slot is provided on both sides of the lower end of the light guide plate, and the second slot is respectively engaged in the second L-shaped limiting groove.
[0016] Optionally, it also includes a magnet block, which is disposed on the upper end wall of the bottom cover. A plurality of second elastic hook arms are protruding on both sides of the upper end wall of the bottom cover, and the second elastic hook arms abut against the upper end wall of the magnet block respectively.
[0017] Optionally, it also includes a sticky note, which is adhered to the upper wall of the second housing by an adhesive layer.
[0018] The technical solution of this utility model has the following beneficial effects: The technical solution of this utility model is achieved by a snap-fit connection between the front ends of the first housing and the second housing. The upper end of the front wall of the first housing is recessed with a slot in the shape of an arc. The light guide plate is detachably embedded in the slot. The bottom cover is detachably covered on the bottom of the first housing and the second housing. This makes the assembly and disassembly of the timing and counting device more convenient and quick, improves production efficiency, and reduces costs. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the overall structure of an easy-to-assemble timing and counting device according to an embodiment of the present invention;
[0021] Figure 2 This is a schematic diagram of the overall structure of an easy-to-assemble timing and counting device according to an embodiment of the present invention from another perspective.
[0022] Figure 3 This is a schematic diagram of the overall structure of an easy-to-assemble timing and counting device according to an embodiment of the present invention from another perspective.
[0023] Figure 4 This is an exploded view of an easily assembled timing and counting device according to an embodiment of the present invention;
[0024] Figure 5 This is another exploded structural diagram of an easily assembled timing and counting device according to an embodiment of the present invention;
[0025] Figure 6 This is a partially exploded structural diagram of an easy-to-assemble timing and counting device according to an embodiment of the present invention.
[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0029] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0030] This invention proposes a timing and counting device that is easy to assemble.
[0031] like Figures 1 to 6As shown, in one embodiment of this utility model, the easily assembled timing and counting device includes a first housing 101, a second housing 102, a bottom cover 103, a PCB board 104, a rechargeable battery 105, a first infrared sensor 106, a second infrared sensor 107, a light guide plate 108, a power switch button 109, a power indicator light 110, and a charging interface 111. The first housing 101 is detachably mounted on the front end of the second housing 102, and the bottom cover 103 is detachably mounted on the bottom of the first housing 101 and the second housing 102. The PCB board 104 is detachably mounted inside the first housing 101 by screws, the rechargeable battery 105 is mounted inside the second housing 102, and the first infrared sensor 106 is embedded in the second housing. The second infrared sensor 107, power switch button 109, power indicator light 110, and charging interface 111 are respectively located on the front wall of the first housing 101 and on the rear wall of the second housing 102. The upper end of the front wall of the first housing 101 has a recessed slot 1011 with an arc-shaped structure. The light guide plate 108 is detachably embedded in the slot 1011. The first housing 101 is provided with LED beads (not shown), and the LED beads are located inside the light guide plate 108. The rechargeable battery 105, the first infrared sensor 106, the second infrared sensor 107, the LED beads, the power switch button 109, the power indicator light 110, and the charging interface 111 are all electrically connected to the PCB board 104.
[0032] Specifically, a first limiting plate 1012 and a second limiting plate 1013 are respectively protruding from the top and sides of the rear end wall of the first housing 101, and a connecting plate 1021 is respectively protruding from the top and sides of the front end wall of the second housing 102. The front end of the connecting plate 1021 is respectively recessed with a first slot 1022. The first limiting plate 1012 and the second limiting plate 1013 are respectively embedded in the first slot 1022, thereby making the assembly of the timing and counting device more convenient and quick.
[0033] Specifically, a buckle plate 1014 is protruding from both sides of the rear end wall of the first housing 101. The outer side wall of the buckle plate 1014 is provided with a plurality of first L-shaped buckle grooves 1015 along the length direction. The front end wall of the second housing 102 is provided with a plurality of buckle protrusions 1024 and a first support plate 1025 on both sides. The buckle protrusions 1024 are detachably embedded in the first L-shaped buckle grooves 1015. The front end of the first support plate 1025 is respectively recessed with a first L-shaped limiting groove 1026. The first L-shaped limiting grooves 1026 are respectively abutted against the buckle plate 1014, thereby making the assembly of the timing and counting device more convenient and quick, improving production efficiency, reducing costs, and making the assembly of the timing and counting device more convenient and quick.
[0034] Specifically, it also includes fastening screws 112. The lower end of the first housing 101 is provided with two first threaded holes 1016, the lower end of the second housing 102 is provided with a second threaded hole 1027, and the bottom cover 103 is recessed with a plurality of screw holes 1031. The fastening screws 112 are respectively inserted into the screw holes 1031 and screwed into the first threaded holes 1016 and the second threaded holes 1027, making the timing and counting device more secure and reliable.
[0035] Specifically, a second L-shaped snap-fit groove (not shown) is protruding on both sides of the upper end of the rear end of the first housing 101, and a first elastic snap-fit arm 1081 is protruding on both sides of the lower end wall of the light guide plate 108. The first elastic snap-fit arm 1081 is detachably and fixedly connected to the second L-shaped snap-fit groove, making the assembly and disassembly of the light guide plate more convenient.
[0036] Specifically, a second support plate 1017 is protruding from both sides of the upper end of the rear end of the first housing 101. A second L-shaped limiting groove 1018 is recessed at the upper end of the second support plate 1017. A second slot 1082 is recessed on both sides of the lower end of the light guide plate 108. The second slots 1082 are respectively locked in the second L-shaped limiting grooves 1018 to limit the position, making the assembly of the light guide plate more secure and reliable.
[0037] Specifically, it also includes a magnet block 113, which is disposed on the upper wall of the bottom cover 103. Multiple second elastic hook arms 1032 are protruding on both sides of the upper wall of the bottom cover 103. The second elastic hook arms 1032 abut against the upper wall of the magnet block 113 respectively, so that the timing and counting device can be magnetically installed through the magnet block, which is more convenient and faster.
[0038] Specifically, it also includes a sticky note 114, which is glued to the upper wall of the second housing 102 by an adhesive layer. The sticky note can display the number of the timing and counting device, so that the user can install it according to the correct number and avoid the error.
[0039] Specifically, the working principle and process of this utility model are as follows:
[0040] The first housing and the second housing are connected by a snap-fit connection at their front ends. The upper end of the front wall of the first housing is recessed with a slot in the shape of an arc. The light guide plate is detachably embedded in the slot. The bottom cover is detachably placed on the bottom of the first housing and the second housing. This makes the assembly and disassembly of the timing and counting device more convenient and quick, improves production efficiency, and reduces costs.
[0041] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A time and count device that is easy to assemble, characterized by, The application relates to a rechargeable infrared sensor, which comprises a first shell, a second shell, a bottom cover, a PCB board, a rechargeable battery, a first infrared sensor, a second infrared sensor, a light guide plate, a power switch button, a power indicator lamp and a charging interface.
2. The easily assembled time counting device according to claim 1, wherein, The top and two sides of the rear end wall of the first shell are respectively provided with a first limiting plate and a second limiting plate, the top and two sides of the front end wall of the second shell are respectively provided with a connecting plate, the front end of the connecting plate is respectively provided with a first clamping groove, and the first limiting plate and the second limiting plate are respectively embedded in the first clamping groove.
3. The easily assembled time counting device according to claim 1, wherein, The two sides of the rear end wall of the first shell are respectively provided with a clamping plate, the outer wall of the clamping plate is provided with a plurality of first L-shaped clamping grooves along the length direction, the two sides of the front end wall of the second shell are provided with a plurality of clamping protrusions and a first supporting plate, the clamping protrusions are respectively detachably embedded in the first L-shaped clamping grooves, and the front end of the first supporting plate is respectively provided with a first L-shaped limiting groove.
4. The easily assembled time counting device according to claim 1, wherein, The lower end of the first shell is provided with two first threaded holes, the lower end of the second shell is provided with a second threaded hole, the bottom cover is provided with a plurality of screw holes, the fastening screws are respectively arranged in the screw holes and screwed into the first threaded hole and the second threaded hole.
5. The easily assembled time counting device according to claim 1, wherein, The upper end of the rear end of the first shell is respectively provided with a second L-shaped clamping groove, and the two sides of the lower end wall of the light guide plate are respectively provided with a first elastic clamping hook arm.
6. The easily assembled time counting device according to claim 5, wherein, The upper end of the rear end of the first shell is respectively provided with a second supporting plate, the upper end of the second supporting plate is respectively provided with a second L-shaped limiting groove, the two sides of the lower end of the light guide plate are respectively provided with a second clamping groove, and the second clamping groove is arranged in the second L-shaped limiting groove.
7. The easily assembled time counting device according to claim 1, wherein, The upper end wall of the bottom cover is provided with a plurality of second elastic clamping hook arms, and the second elastic clamping hook arms abut against the upper end wall of the magnet block.
8. The easily assembled time counting device according to claim 1, wherein, A note is further included, which is fixed to the upper end wall of the second case by an adhesive layer.