Fire-fighting encoder

Abstract

The utility model relates to a fire-fighting encoder comprising a housing, and the housing is provided with a plurality of first chutes communicated with an accommodation cavity, a PCB, a conductive probe and a push rod assembly. The conductive probe is fixedly installed at the front end of the push rod assembly. The front end of the PCB is electrically connected with a contact elastic sheet; the first chute is provided with a first fixed material position and a second fixed material position which are communicated with each other. The fire-fighting encoder is simple in structure and ingenious in design, and the push rod assembly drives the conductive probe to move between the first fixed material position and the second fixed material position along the first sliding groove; when coding is not needed, the push rod assembly is moved to a first material fixing position, and the conductive probe is positioned and stored in the containing cavity; when coding is needed, the push rod assembly is moved to the second material fixing position, the conductive probe is fixedly arranged outside the shell in a protruding mode, and meanwhile the conductive probe is electrically connected with the contact elastic piece. Therefore, the conductive probe can be flexibly switched between a storage state and an electrical use state.

Description

Technical Field

[0001] The utility model relates to a fire encoder. Background Art

[0002] A fire encoder is a device used to assign unique address codes to equipment in a fire alarm system. Its main function is to assign a unique address code to each sensor or alarm device in an automatic alarm system to ensure that the fire control center can accurately identify the status and location of each device in the system.

[0003] In such electronic products as fire encoders, the common electrical connection methods are as follows:

[0004] The first one is to connect a data cable out through a headphone jack or a USB jack on the encoder; and set an alligator clip at the output end of the data cable, then clamp and fix the alligator clip on the coding port of the product to be coded to achieve electrical connection, and then code the product to be coded;

[0005] The second one is to fixedly provide two outwardly protruding metal pins (also called pins) on the encoder, and then closely attach them to the coding port of the product with a code to achieve electrical connection, and then code the product to be coded.

[0006] However, both of the above methods have inconveniences. In the first electrical connection structure, the alligator clip wire is not easy to place in the tool kit, and the data cable needs to be arranged every time it is used. Moreover, when coding multiple products continuously, the alligator clip needs to be opened or closed constantly, which is time-consuming; in the second electrical connection structure, the two metal pins are fixedly installed on the encoder, and the metal pins are always exposed outside the encoder, which is easy to adsorb dust, oil and other pollutants, which may cause poor contact or short circuit during subsequent electrical connection; it may also cause damage to the metal pins due to accidental collision, drop or other mechanical reasons, affecting its function. Content of the Utility Model

[0007] The technical problem to be solved by the utility model is to provide a fire encoder in view of the above defects of the prior art.

[0008] The technical solution adopted by the utility model to solve its technical problems is: a fire encoder, comprising a shell, wherein a accommodating cavity is arranged in the shell; a plurality of first slide grooves connected with the accommodating cavity are arranged on the shell; a PCB board is arranged in the accommodating cavity; a conductive probe and a push rod assembly slidably connected with the first slide groove are movably arranged in the accommodating cavity; the conductive probe is fixedly installed at the front end of the push rod assembly; a plurality of first through holes corresponding to the conductive probes and connected with the accommodating cavity are arranged at the front end of the shell; a plurality of raised contact springs are electrically connected to the front end of the PCB board; a first fixed material position and a second fixed material position connected with each other are arranged on the first slide groove; when the push rod assembly moves to the first fixed material position, the conductive probe is positioned and stored in the accommodating cavity; when the push rod assembly moves to the second fixed material position, the conductive probe is fixedly protruded outside the shell and the conductive probe is electrically connected with the contact spring;

[0009] The fire encoder described in the utility model, wherein the conductive probe, the push rod assembly, the first slide slot and the contact spring constitute a probe pushing unit;

[0010] The fire encoder of the utility model, wherein the probe pushing unit is provided with three groups; among the three groups of the probe pushing units, one group of the conductive probes is connected to the negative pole, and the other two groups of the conductive probes are connected to the positive pole;

[0011] In the fire protection encoder of the utility model, the two groups of the probe pushing units connected to the positive pole are both located on the left side of the probe pushing unit connected to the negative pole;

[0012] The fire encoder described in the utility model, wherein a mounting bracket is fixedly arranged between the PCB board and the housing; a plurality of push rod assemblies are movably mounted on the mounting bracket;

[0013] The fire encoder of the utility model, wherein the push rod assembly comprises a push rod; a first positioning groove recessed inwardly is provided in the middle of the push rod; a pressing piece is provided in the first positioning groove for limiting movement, and a resetting elastic piece provides elastic force to the pressing piece and the bottom surface of the first positioning groove; the upper end of the pressing piece passes through the first sliding groove and protrudes outside the housing; two positioning protrusions are respectively provided on the two opposite outer side surfaces of the pressing piece; the pressing piece is also provided with a limiting assembly to prevent it from being separated from the first positioning groove;

[0014] For the fire encoder described in the present utility model, the limiting assembly includes a guide rod extending towards the mounting bracket from the lower end of the pressing member or the positioning convex block; a second through hole for the guide rod to pass through is provided at the bottom of the first positioning groove; a plurality of second sliding grooves corresponding to the guide rod one by one and slidably connected thereto are provided on the mounting bracket; the guide rod penetrates through the second sliding groove; a limiting portion for preventing the pressing member from detaching from the mounting bracket is further provided at the free end of the guide rod;

[0015] For the fire encoder described in the present utility model, eaves extending towards the housing are provided on both sides of the push rod; an opening groove adapted to the positioning convex block is provided on the eaves from top to bottom; the opening groove communicates with the second through hole; when the reset elastic member is in a free state, the upper surface of the positioning convex block is higher than the upper surface of the eaves;

[0016] For the fire encoder described in the present utility model, grooves extending along the length direction of the first sliding groove are respectively provided on the inner walls of the housing on both sides of the first sliding groove; second positioning grooves extending towards the direction away from the inner side of the housing are respectively provided at the first material positioning position and the second material positioning position in the grooves; when the reset elastic member is in a free state, the positioning convex block is snap-fitted and positioned in the second positioning groove;

[0017] For the fire encoder described in the present utility model, a third through hole is provided at the front end of the conductive probe;

[0018] For the fire encoder described in the present utility model, the conductive probe and the push rod are arranged in a mutually staggered manner; the push rod assembly further includes a connecting portion connecting the push rod and the conductive probe; at least a part of the conductive probe is located on the connecting portion and is electrically connected in cooperation with the contact elastic sheet.

[0019] The beneficial effects of the present utility model are as follows: The fire encoder has a simple structure and ingenious design. The conductive probe is driven by the push rod assembly to move along the first sliding groove between the first material positioning position and the second material positioning position; when coding is not required, the push rod assembly is moved to the first material positioning position, and the conductive probe is positioned and received in the accommodation cavity; when coding is required, the push rod assembly is moved to the second material positioning position, so that the conductive probe is fixedly protruded outside the housing and the conductive probe is electrically connected to the contact elastic sheet at the same time; thereby realizing the flexible switching between the two states of receiving and electrical use of the conductive probe. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will further explain the present utility model in conjunction with the drawings and embodiments. The drawings in the following description are only partial embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings:

[0021] Figure 1 is the three-dimensional exploded view of the fire encoder in the preferred embodiment of the present utility model;

[0022] Figure 2 is Figure 1 the enlarged view at position E in;

[0023] Figure 3 is the three-dimensional exploded view of the push rod assembly;

[0024] Figure 4 is the usage state of the fire encoder in the preferred embodiment of the present utility model Figure 1 ;

[0025] Figure 5 is the usage state of the fire encoder in the preferred embodiment of the present utility model Figure 2 ;

[0026] Figure 6 is the state diagram of the encoder in the unencoded state in the initial state of the preferred embodiment of the present utility model;

[0027] Figure 7 is the state diagram of the push rod assembly of the preferred embodiment of the present utility model during movement;

[0028] Figure 8 is the state diagram of the encoder during encoding in the preferred embodiment of the present utility model. Detailed implementation manners

[0029] The terms "first", "second", "third", "fourth", etc. in the specification, claims and drawings of the present invention are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices.

[0030] References to "embodiments" in this specification mean that specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the invention. The phrase does not necessarily refer to the same embodiment at every occurrence in the specification, nor is it an independent or alternative embodiment mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0031] "Plurality" means two or more. "And / or" describes the associated relationship of associated objects and indicates that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0032] Moreover, terms indicating directions such as "upper, lower, front, rear, left, right, upper end, lower end, longitudinal" etc. are all referenced based on the attitude position of the device or equipment described in this solution during normal use.

[0033] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the protection scope of the present invention.

[0034] A fire encoder according to a preferred embodiment of the present utility model, as Figure 1-2 shown, includes a housing 20. An accommodation cavity 01 is provided inside the housing 20; a plurality of first sliding grooves 21 are provided on the housing 20; a PCB board 02 is provided in the accommodation cavity 01; a conductive probe 22 and a push rod assembly 23 slidably connected to the first sliding grooves 21 are movably provided on one side of the housing 20 inside the accommodation cavity 01; the conductive probe 22 is fixedly installed at the front end of the push rod assembly 23; a plurality of first through holes 24 corresponding to the conductive probes 22 one by one and communicating with the accommodation cavity 01 are further provided at the front end of the housing 20; a plurality of contact elastic pieces 03 protruding towards the housing 20 are electrically connected to the front end of the PCB board 02; a first fixed material position a and a second fixed material position b communicating with each other are provided on the moving path of the push rod assembly 23 in the first sliding grooves 21; when the push rod assembly 23 moves to the first fixed material position a, the conductive probe 22 is positioned and stored in the accommodation cavity 01; when the push rod assembly 23 moves to the second fixed material position b, the conductive probe 22 is fixedly protruded outside the housing 20 and the conductive probe 22 is electrically connected to the contact elastic piece 03. The contact elastic piece 03 is a metal elastic piece.

[0035] The fire encoder has a simple structure and ingenious design. The push rod assembly drives the conductive probe to move between the first fixed position and the second fixed position along the first chute. When encoding is not required, the push rod assembly is moved to the first fixed position, and the conductive probe is positioned and stored in the accommodation cavity. When encoding is required, the push rod assembly is moved to the second fixed position, so that the conductive probe is fixedly protruded outside the housing. It can enable the conductive probe to flexibly switch between the storage state and the electrical use state.

[0036] Furthermore, as Figure 1 shown, an installation bracket 30 is fixedly arranged between the PCB board 02 and the housing 20; a plurality of push rod assemblies 23 are all movably installed on the installation bracket 30. In this embodiment, the installation bracket 30 can be fixedly installed on the housing 20 through a snap structure in the prior art, thereby providing a certain supporting force or pressure to the plurality of push rod assemblies 23, and the structure is stable.

[0037] As Figure 3 shown, the push rod assembly 23 includes a push rod 231; a first positioning groove 232 is recessed inwardly in the middle of the push rod 231; a pressing member 233 is limited and movably arranged in the first positioning groove 232, and a reset elastic member 234 that provides an elastic force to the pressing member 233 and the bottom surface of the first positioning groove 232; the reset elastic member 234 can be a spring in the prior art; the upper end of the pressing member 233 passes through the first chute 21 and protrudes outside the housing 20; two positioning protrusions 235 are respectively arranged on the two opposite outer side surfaces of the pressing member 233 for cooperating with the two first fixed positions a or the two second fixed positions b in the first chute 21 for positioning.

[0038] Furthermore, in order to prevent the pressing member 233 from detaching from the first positioning groove 232; a limiting component is also arranged between the pressing member 233 and the first positioning groove. In this embodiment, the limiting component includes a guide rod 236 extending in the direction of the installation bracket 30 from the lower end of the pressing member 233 or the positioning protrusion 235; a second through hole 237 for the guide rod 236 to pass through is arranged at the bottom of the first positioning groove 232; as Figure 1 shown, a plurality of second chutes 31 corresponding to the guide rods 236 one by one and slidably connected to them are arranged on the installation bracket 30; the guide rod 236 penetrates through the second chute 31; a limiting portion 238 for preventing the pressing member from detaching from the installation bracket 30 is also arranged at the free end of the guide rod 236, the limiting portion 238 is perpendicular to the guide rod 236, and the width between the two limiting portions 238 is greater than the width between the two guide rods 236. The structure is simple and can fix the two guide rods 236 on the installation bracket 30.

[0039] Further, eaves edges 239 extending toward the housing 20 are provided on both sides of the push rod 231; opening grooves 2311 adapted to the positioning bumps 235 are provided on the eaves edges 239 from top to bottom; it is convenient for the positioning bumps 235 to move up and down within a certain range in the opening grooves 2311, and the opening grooves 2311 communicate with the second through holes 237; when the reset elastic member 234 is in a free state, the upper surface of the positioning bump 235 is higher than the upper surface of the eaves edge 239, which is convenient for subsequent positioning connection with the positioning structure of the first chute 21.

[0040] Further, grooves 211 extending along the length direction of the first chute 21 are respectively provided on the inner walls of the housing 20 on both sides of the first chute 21; second positioning grooves 212 extending toward the direction away from the inner side of the housing 20 are provided at the first material positioning position a and the second material positioning position b in the grooves 211 respectively; when the reset elastic member 234 is in a free state, the positioning bump 235 is snap-fitted and positioned in the second positioning groove 212, and the positioning is simple.

[0041] The first chute 21 and the first through hole 24 are arranged in a staggered manner; as Figure 3 shown, the conductive probe 22 and the push rod 231 are arranged in a staggered manner; the push rod assembly 23 further includes a connecting portion 2312 connecting the push rod 231 and the conductive probe 22. The conductive probe 22 is arranged in an L shape, and at least a part of it is located on the connecting portion 2312 and is electrically connected to the contact elastic piece 03.

[0042] Further, a third through hole 221 is provided at the front end of the conductive probe 22. Through the third through hole 221, wires can be taken locally for wiring when installing fire protection products, and any coding port can be randomly coded without a special connecting wire.

[0043] Further, the conductive probe 22, the push rod assembly 23, the first chute 21, and the contact elastic piece 03 form a set of probe pushing and feeding units. Each set of probe pushing and feeding units is independently controlled and does not affect each other.

[0044] In this embodiment, as Figure 4 and Figure 5 shown, three sets of probe pushing and feeding units are provided; in this embodiment, among the three sets of probe pushing and feeding units, the conductive probe 22 in the No. 1 probe pushing and feeding unit is connected to the negative electrode, and the conductive probes 22 in the two sets of No. 2 and No. 3 probe pushing and feeding units are connected to the positive electrode; among them, the two sets of probe pushing and feeding units connected to the positive electrode are both located on the left side of the probe pushing and feeding unit connected to the negative electrode. In this embodiment, the distances between adjacent two probe pushing and feeding units are all different; as Figure 4 shown, the conductive probe 22 in the No. 1 probe pushing and feeding unit is in a retracted state, and the conductive probes 22 in the No. 2 and No. 3 probe pushing and feeding units are pushed outwards to obtain a coding distance of 10 mm. As Figure 5As shown, the conductive probe 22 in the No. 1 probe feeding unit extends outward, the conductive probe 22 in the No. 2 probe feeding unit is in a retracted state, and the conductive probe 22 in the No. 3 probe feeding unit is pushed outwards, obtaining a coding pitch of 60.9 mm. The two extended conductive probes have pole functions and are connected to the two ports of the product to be coded to form a circuit; optionally, the pitch between adjacent two probe feeding units can also be the same. By setting the probe feeding unit into an independent structure; the user can select any combination of the probe feeding unit connected to the positive electrode and the probe feeding unit connected to the negative electrode according to the actual usage situation, and then obtain two different pitch combinations, with stronger applicability. Optionally, in another embodiment, the probe feeding unit can also be provided with two groups, one group of conductive probes 22 is connected to the negative electrode; the other group of conductive probes 22 is connected to the positive electrode.

[0045] As Figure 6 shown, the figure shows the uncoded state diagram of the encoder in the initial state of the present utility model; in the initial state, the pressing member 233 is not affected by external forces, at this time the reset elastic member 234 is in a free state, and both positioning protrusions 235 are clamped in the second positioning groove b at the rear end of the first chute 21; the conductive probe 22 is received in the accommodation cavity 01 and the conductive probe 22 does not contact the corresponding contact elastic piece 03.

[0046] During the feeding process, the pressing member 233 receives an external pressing force applied in the direction of the accommodation cavity 01. At this time, the reset elastic member 234 is compressed and deformed, and the pressing member 233 moves downward so that the positioning protrusion 235 disengages from the second positioning groove b; after the pressing member 233 receives an external force applied in the direction of the front end of the encoder and moves, it drives the pressing member 233 to drive the push rod 231 and the positioning protrusion 235 to move in the direction of the first positioning groove a, and at the same time the wire probe 22 moves towards the front section of the encoder; as Figure 7 shown, the figure shows the state diagram of the push rod assembly in the present utility model during movement but the encoder is not coded; when the pressing member 233 moves to the middle of the first chute 21, the end of the conductive probe 22 protrudes out of the first through hole 24 and the conductive probe 22 on the connecting portion 2312 does not contact the corresponding contact elastic piece 03.

[0047] When the pressing member 233 drives the push rod 231 and the positioning protrusion 235 to move to the first positioning groove a, the pressing member 233 loses the external force applied, and the reset elastic member 234 automatically resets and drives the pressing member 233 and the positioning protrusion 235 to move upward until both positioning protrusions 235 are clamped in the first positioning groove a at the front end of the first chute 21, as Figure 8 shown, the figure shows the state diagram during encoder coding; the conductive probe 22 is fixedly protruded outside the housing 20 and the conductive probe 22 on the connecting portion 2312 abuts against the contact elastic piece 03 to achieve electrical connection.

[0048] It should be understood that those of ordinary skill in the art can make improvements or modifications based on the above description, and all such improvements and modifications shall fall within the protection scope of the appended claims of this utility model.

Claims

1. A fire encoder, comprising a housing, characterized in that, A receiving cavity is provided inside the housing; a plurality of first sliding grooves communicating with the receiving cavity are provided on the housing; a PCB board is provided in the receiving cavity; a conductive probe and a push rod assembly slidably connected to the first sliding groove are movably provided in the receiving cavity; the conductive probe is fixedly installed at the front end of the push rod assembly; a plurality of first through holes corresponding to the conductive probes one by one and communicating with the receiving cavity are provided at the front end of the housing; a plurality of protruding contact elastic pieces are electrically connected to the front end of the PCB board; a first material positioning position and a second material positioning position communicating with each other are provided on the first sliding groove; when the push rod assembly moves to the first material positioning position, the conductive probe is positioned and received in the receiving cavity; when the push rod assembly moves to the second material positioning position, the conductive probe is fixedly protruded outside the housing and the conductive probe is electrically connected to the contact elastic piece.

2. The fire encoder according to claim 1, wherein, The conductive probe, the push rod assembly, the first sliding groove and the contact elastic piece constitute a set of probe pushing and feeding units.

3. The fire encoder according to claim 2, characterized in that, Three sets of the probe pushing and feeding units are provided; among the three sets of the probe pushing and feeding units, one set of the conductive probes is connected to the negative electrode, and the other two sets of the conductive probes are connected to the positive electrode.

4. The fire encoder according to any one of claims 1-3, characterized in that, An installation bracket is fixedly provided between the PCB board and the housing; a plurality of the push rod assemblies are movably installed on the installation bracket.

5. The fire encoder according to claim 4, characterized in that, The push rod assembly includes a push rod; a first positioning groove recessed inward is provided in the middle of the push rod; a pressing member is limited and movably provided in the first positioning groove, and a reset elastic member providing an elastic force to the pressing member and the bottom surface of the first positioning groove; the upper end of the pressing member passes through the first sliding groove and protrudes outside the housing; two positioning protrusions are respectively provided on two opposite outer side surfaces of the pressing member; a limiting component for preventing the pressing member from detaching from the first positioning groove is further provided on the pressing member.

6. The fire encoder according to claim 5, wherein, The limiting component includes a guiding rod extending towards the installation bracket from the lower end of the pressing member or the positioning protrusion; a second through hole for the guiding rod to pass through is provided at the bottom of the first positioning groove; a plurality of second sliding grooves corresponding to the guiding rods one by one and slidably connected to the guiding rods are provided on the installation bracket; the guiding rod penetrates through the second sliding groove; a limiting portion for preventing the pressing member from detaching from the installation bracket is further provided at the free end of the guiding rod.

7. The fire encoder according to claim 6, wherein Eaves extending towards the housing are provided on both sides of the push rod; an opening groove adapted to the positioning protrusion is provided on the eaves from top to bottom; the opening groove communicates with the second through hole; when the reset elastic member is in a free state, the upper surface of the positioning protrusion is higher than the upper surface of the eaves.

8. The fire encoder according to claim 5, wherein Grooves extending along the length direction of the first sliding groove are respectively provided on the inner walls on both sides of the housing where the first sliding groove is located; second positioning grooves extending towards the direction away from the inner side of the housing are respectively provided at the first material positioning position and the second material positioning position in the grooves; when the reset elastic member is in a free state, the positioning protrusion is snap-fitted and positioned in the second positioning groove.

9. The fire encoder according to any one of claims 1-3 and 5-8, characterized in that A third through hole is provided at the front end of the conductive probe.

10. The fire encoder according to any one of claims 5-8, characterized in that, The conductive probe and the push rod are arranged offset from each other; the push rod assembly further includes a connecting portion connecting the push rod and the conductive probe; at least a part of the conductive probe is located on the connecting portion and is electrically connected in cooperation with the contact elastic piece.

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