CN113851288B

CN113851288B - Semi-precision plastic package resistor

Info

Publication number: CN113851288B
Application number: CN202111136314.0A
Authority: CN
Inventors: 杨捷
Original assignee: Bengbu Art Electronics Co ltd
Current assignee: Bengbu Art Electronics Co ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-06-07
Anticipated expiration: 2041-09-27
Also published as: CN113851288A

Abstract

The invention discloses a semi-precision plastic package resistor, and particularly relates to the field of resistors. After the torsional spring linking section is disconnected and the constraint of the fusing block, the reset type ruler spring section drives the central positioning sleeve to rotate, and the corresponding type external thread groove is meshed with the guide piece type internal thread tooth groove to push the outer ring sleeve to move towards the end part of the conductor connecting mechanism, so that the conductor type cantilever and the elastic arc piece conductor are pushed to constrain rod-shaped wires outside the conductor connecting mechanism, and the problem that the small circuit board element is difficult to weld and uniformly electrically connect is relatively solved.

Description

Semi-precision plastic package resistor

Technical Field

The invention relates to the technical field of resistors, in particular to a semi-precision plastic package resistor.

Background

The resistor is generally directly called as a resistor in daily life, the resistor is a current limiting element, after the resistor is connected in a circuit, the resistance value of the resistor is fixed, generally two pins, the resistor can limit the current passing through a branch connected with the resistor, the resistor with unchangeable resistance value is called as a fixed resistor, the resistor with changeable resistance value is called as a potentiometer or a variable resistor, the ideal resistor is linear, namely the instantaneous current passing through the resistor is in proportion to the applied instantaneous voltage, the variable resistor is used for voltage division, one to two movable metal contacts are pressed on a bare resistor body, and the contact position determines the resistance value between any end of the resistor body and the contacts.

The resistor is used for elements in the circuit, protects the circuit simultaneously, prevents other elements from being burnt out, in other words, the size of the effect of hindering of the conductor to the electric current in the circuit, in the accuracy of double-lead and the electric connection of semi-accuracy resistance, usually connect on the small-size circuit board, because the volume of each grade of element is less, in the course of carrying out the wire welding, can't let the face of weld more even, the problem of broken welding appears easily simultaneously, so need design a small-size accuracy and semi-accuracy resistor that is convenient for each angle mutual electric connection of each grade of element and carry out actual exploitation and use.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, an embodiment of the present invention provides a semi-precision plastic packaged resistor, in which a reset-type blade spring section drives a central positioning sleeve to rotate, so as to push a conductor-type cantilever and an elastic arc conductor to bind a rod-shaped wire outside a conductor connection mechanism, thereby solving the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a semi-precise plastic package resistor comprises a resistance mechanism used for adjusting the magnitude of current blocking effect in a circuit, wherein two ends of the resistance mechanism are electrically connected with conductor connecting mechanisms used for assisting in connecting elements at all levels, a reset mechanism used as a transmission power source is installed inside the conductor connecting mechanisms, a wire jack mechanism used for positioning a resistance wire is installed in an inner cavity of each conductor connecting mechanism through the reset mechanism, the reset mechanism is used as a power source when the wire jack mechanism rotates, the power source is a reset type ruler spring section of the reset mechanism, and after the reset type ruler spring section is loosened and bound, an inner ring of the reset mechanism resets through rotation, so that other parts are driven to rotate correspondingly;

the reset mechanism comprises a prefabricated limit empty groove, a fusing block is placed in the inner cavity of the prefabricated limit empty groove in a hanging mode, a heat-conducting metal rod for heat conduction is installed at the top of the fusing block, partition plates for preventing the fusing block from falling off are installed at the top and the bottom of the fusing block, a torsional spring connecting section is installed at the bottom of the fusing block, and a reset type ruler spring section is installed in the inner cavity of the conductor connecting mechanism; the wire jack mechanism comprises a central positioning sleeve, the outer wall of the central positioning sleeve is sleeved with two outer ring sleeves which move relatively, the inner wall of each outer ring sleeve is provided with a guide vane type internal thread tooth groove, the outer wall of the central positioning sleeve is provided with corresponding type external thread grooves which are in one-to-one correspondence with the guide vane type internal thread tooth grooves, the inner walls of the corresponding type external thread grooves are provided with guide vane type spiral laminating pipe sections in a laminating manner, the tooth spaces and the tooth groove directions of the corresponding type external thread grooves are arranged in mirror symmetry along the vertical central line of the central positioning sleeve, a conductor type cantilever is arranged in the outer ring sleeve in a penetrating manner, one end of the conductor type cantilever is provided with an elastic arc sheet conductor, and after the reset type scale spring section loosens the constraint of the torsional spring connecting section to the reset type scale spring section, the reset type scale spring section performs rotary elastic recovery, so that the central positioning sleeve rotates simultaneously, the principle of a ball screw is utilized to drive the two outer ring sleeves to move in opposite directions, when the elastic arc sheet conductor is separated from the limit of the built-in limit guard ring, the wire part of the resistance mechanism is positioned and fixed, and meanwhile, the wire part is in electrical connection with the pipe section in a spirally-jointed way through the wire sheet;

meanwhile, when the reset type square spring section is fixed through the torsional spring connecting section, the reset type square spring section keeps an elastic recovery rolling state, and the torsional spring connecting section also has resilience; the outer ring sleeve has the characteristics of flame retardance and insulation, and the conductor type cantilever and the guide vane type internal thread tooth groove are electrically connected in the outer ring sleeve; the conductor type cantilever and the elastic arc sheet conductor are made of super-elastic metal conductor materials, and in a normal state, the elastic arc sheet conductor is arranged in a plane, and the conductor type cantilever is arranged in an obtuse-angle cantilever; the elastic arc sheet conductors can restore the flat-plate shape after being separated from the constraint of the built-in limiting retainer, and the two elastic arc sheet conductors achieve the clamping effect on the wire part of the resistor through the obtuse angle shape of the conductor type cantilever.

In a preferred embodiment, the heat-conducting metal rod is in a rod-shaped structure, and is inserted into the middle area of the fusing block, wherein the length ratio of the heat-conducting metal rod to the fusing block is 1: 2; wherein, after the wire position installation of resistance mechanism was implemented and is accomplished, through the electric welding pen, point contact was carried out to heat conduction type metal pole for heat conduction type metal pole local temperature rose, reached the effect of fusing to the fuse-block, can produce the effect that fracture and reset type chi spring section break away from the constraint.

In a preferred embodiment, while the separator has flame retardancy; after the heat-conducting metal rod is heated, the fusing block is fused, and the partition plate cannot be fused.

In a preferred embodiment, the guide-vane type internal thread tooth socket is electrically connected with the guide-vane type spirally-jointed pipe section, two sections of the guide-vane type spirally-jointed pipe sections arranged in a mirror image manner along the central positioning sleeve in the corresponding type external thread groove are electrically connected with each other, and the spiral guide-vane type spirally-jointed pipe sections are used for electrical connection, so that more connection cables are reduced in space stacking, and the actual utilization rate of the space is improved.

In a preferred embodiment, the material of the reset type ruler spring section is nickel titanium memory alloy, and the reset type ruler spring section has superelasticity characteristics in a normal state, and the memory metal critical memory temperature of the reset type ruler spring section is 130 ℃; after the reset type ruler spring section has finished rotating and relaxing, the local temperature of the reset type ruler spring section rises through heat conduction, and the memory temperature of the reset type ruler spring section enables the reset type ruler spring section to restore the rolling state, so that the central positioning sleeve is reversely rotated, and the resistance mechanism is quickly separated from the electric connection state.

In a preferred embodiment, a positioning fixing rod for connecting a conductor connecting mechanism is installed at one end of the reset type ruler spring section, an annular bearing seat is installed in the reset type ruler spring section displayed by a surrounding body, the inner wall of the annular bearing seat is fixedly provided with a plurality of bearing type cantilevers in an annular equidistant mode, and the annular bearing seat and the bearing type cantilevers are used for being connected with the reset type ruler spring section, so that the reset type ruler spring section can drive a central positioning sleeve to rotate clockwise and anticlockwise simultaneously when rotating, and corresponding action piece transmission is achieved.

In a preferred embodiment, the inner cavity of the center positioning sleeve is provided with a wire placing groove for placing a resistance wire, the middle part of the outer wall of the center positioning sleeve is fixedly provided with a center positioning fixing ring, and the center positioning fixing ring is fixedly connected with the bearing type cantilever through a bolt, so that a fixed state is formed.

In a preferred embodiment, a limiting support rod is fixedly mounted on the outer wall of the outer ring sleeve, a fitting type limiting plate for stabilizing the movement direction of the outer ring sleeve is fixedly mounted at one end of the limiting support rod, a T-shaped anti-falling slider is arranged on the outer wall of the fitting type limiting plate, the conductor connecting mechanism comprises a first external sleeve, a chute corresponding to the T-shaped anti-falling slider is formed in the inner wall of the first external sleeve, the T-shaped anti-falling slider of the fitting type limiting plate is slidably clamped in the corresponding chute, and the limiting effect is achieved on the horizontal transverse movement of the outer ring sleeve; the outer ring sleeve is allowed to keep a more stable moving state along the set track line when performing horizontal movement.

In a preferred embodiment, the resistance mechanism comprises a precision resistor, an outer ring plastic casing is sleeved on the outer wall of the precision resistor, rod-shaped wires are electrically connected to both ends of the precision resistor, and the rod-shaped wires are used for electrically connecting the resistance element of the rod-shaped wire with other action elements.

In a preferred embodiment, both ends of the first external sleeve are coated with external limiting guard rings, an inner cavity of each external limiting guard ring is provided with an internal limiting guard ring for inserting rod-shaped wires, a group of middle separating blocks are arranged between each external limiting guard ring and each internal limiting guard ring, the number of each group of the middle separating blocks is at least two, an arc-shaped protecting ring is arranged on one side of each external limiting guard ring, a group of linking supporting sections are arranged on one side of each internal limiting guard ring, and the number of each group of the linking supporting sections is at least two; the built-in limiting guard ring is used for preventing the elastic arc sheet conductor from keeping a bending and rolling state under the condition that the elastic arc sheet conductor is not separated from the limiting position, and the middle separating block is used for assisting in supporting the built-in limiting guard ring.

In a preferred embodiment, the external limiting retainer, the middle separating block and the internal limiting retainer have flame-retardant and insulating characteristics, the internal limiting retainer is made of a hard material, and the connecting support sections and the elastic arc sheet conductors are arranged in a one-to-one correspondence manner.

In a preferred embodiment, the middle part of the first external sleeve is provided with a second external sleeve, a sleeve joint ring is connected between the first external sleeve and the second external sleeve, the second external sleeve and the sleeve joint ring have flame-retardant and insulating characteristics, and the sleeve joint ring also has a plastic characteristic, so that the shape can be bent when the sleeve joint ring is in an electric connection process for a circuit board, and the convenience of connection is improved.

In a preferred embodiment, the engaging support section is made of a superelastic conductor material, and the direction of the thread mouths of the guide plate type internal thread tooth grooves and the engaging support section faces to the central region of the central positioning sleeve, so that when the central positioning sleeve rotates, the guide plate type internal thread tooth grooves drive the outer ring sleeve to transversely move towards the central region of the central positioning sleeve; when the outer ring sleeve moves in the central area of the line center positioning sleeve, the elastic arc sheet conductor is pressed on the surface of the connecting support section and electrically contacts the rod-shaped lead, so that exposed electrical conduction elements are reduced, and the use safety is improved.

In a preferred embodiment, the inner chamber of the wire jack mechanism is provided with a gas auxiliary positioning mechanism for limiting and fixing the rod-shaped wire, the gas auxiliary positioning mechanism comprises a first annular airbag, one side of the first annular airbag is integrally connected with a second annular airbag, and the inner chambers of the first annular airbag and the second annular airbag are provided with one-way gas valves.

In a preferred embodiment, the ratio of the gas volume of the inner cavity of the first annular airbag to the gas volume of the inner cavity of the second annular airbag is 2:1-3: 1; the limiting area surrounded by the inner rings of the first annular air bag and the second annular air bag is a first positioning chamber, a buffer chamber and a second positioning chamber in sequence; because the gas volume of first annular gasbag is greater than the gas volume of second annular gasbag for bar-shaped wire is at the in-process of pegging graft, after contacting second location cavity, first annular gasbag inner chamber gas just can pass through one-way pneumatic valve to the motion of second annular gasbag inner chamber, forms the spacing effect of extrusion to bar-shaped wire.

In a preferred embodiment, the first annular airbag and the second annular airbag are filled with flame-retardant but uninsulated gas, the inner wall of each second annular airbag is communicated with two corresponding positioning mechanisms, and when the wire inserting hole mechanism is subjected to hot melting, the gas auxiliary positioning mechanism is broken, so that the local auxiliary flame-retardant effect can be achieved.

In a preferred embodiment, the gas-assisted positioning mechanism and the positioning mechanism both have flame retardant and insulating characteristics.

In a preferred embodiment, the positioning mechanism comprises a sucker cover in the shape of a sucker disc, a supporting disc is arranged in the sucker cover at an interval, an auxiliary reset elastic sheet is installed on one side of the supporting disc and has superelasticity, external disc body sheaths are sleeved on the supporting disc and the auxiliary reset elastic sheet, the formed state can be normally exhausted under the condition that air flow passes through the supporting disc, and when the air flow is stopped, the two sucker covers are mutually attached to the outer wall of the rod-shaped lead to form a fixed state.

In a preferred embodiment, the number of the external disk body sheaths is at least four, and a plurality of adjacent external disk body sheaths are arranged in a complete circular shape after being placed, so that a simple closable valve is formed.

In a preferred embodiment, the tip of each external disk body sheath is connected with a magnet sealing block, and the plurality of external disk body sheaths are normally kept in a horizontal plane state through magnetic attraction of the magnet sealing blocks.

In a preferred embodiment, the two side straight edges of the external tray body sheath are respectively provided with a plurality of semicircular sealing fixture blocks and semicircular clamping grooves which are arranged in a one-to-one correspondence manner, after the semicircular sealing fixture blocks are clamped in the inner cavities of the semicircular clamping grooves, a plurality of adjacent external tray body sheaths keep a tightly-fitted closed state, and a good sealing effect is formed by utilizing the clamping type and the magnetic suction type.

The invention has the technical effects and advantages that:

1. when the connecting section of the torsion spring is disconnected from the constraint of the fusing block, the reset type scale spring section drives the central positioning sleeve to rotate, and the corresponding type external thread groove is meshed with the guide vane type internal thread tooth groove to push the outer ring sleeve to move towards the end part of the conductor connecting mechanism, so that the conductor type cantilever and the elastic arc sheet conductor are pushed to constrain rod-shaped wires outside the conductor connecting mechanism, and the problem that a small circuit board element is difficult to weld uniformly and electrically connected is relatively solved;

2. in the condition of separating the connection section of the torsion spring from the constraint, the normally used electric welding pen is utilized to spot-weld the area of the heat-conducting metal rod, so that the fusing block is fused, and after the fusing block is fused, the connection section of the torsion spring can be separated from the constraint, thereby improving the convenience of the electrical connection of circuit elements and the operation of components;

3. when the local temperature around the conductor connecting mechanism reaches 130 ℃, the reset type ruler spring section is restored to the original rolling state through the self memory temperature, and meanwhile, the central positioning sleeve is driven to rotate reversely, so that the outer ring sleeve drives the elastic arc sheet conductor to loosen the electrical connection of the rod-shaped conducting wire, and the effect of assisting elements in a protection circuit is achieved;

4. when the lead is fixed, the gas in the inner cavity of the first annular air bag enters the inner cavity of the second annular air bag through the one-way gas valve, so that the effect of limiting and fixing the rod-shaped lead by the second annular air bag can be realized;

5. when the central positioning sleeve is damaged, the flame-retardant gas in the first annular air bag and the second annular air bag can achieve the secondary protection, namely the flame-retardant effect;

6. adsorb each other through two adjacent sucking disc covers, reach the effect of location and fixed shaft-like wire, the form setting of external disk body sheath simultaneously for whole can carry out under the fixed circumstances of sucking disc type, through the thermal energy more convenient fire-retardant type gas of release.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic axial side structure of the present invention.

Fig. 3 is a schematic structural view of the conductor connecting mechanism of the present invention.

Fig. 4 is a schematic axial side structure diagram of the conductor connecting mechanism of the present invention.

Fig. 5 is a partial structural sectional view of the conductor connecting mechanism of the present invention.

FIG. 6 is an enlarged view of the portion A of FIG. 5 according to the present invention.

Fig. 7 is a longitudinal sectional view showing the internal structure of the conductor connecting mechanism of the present invention.

FIG. 8 is an enlarged view of the portion B of FIG. 7 according to the present invention.

FIG. 9 is an enlarged view of the structure of the portion C of FIG. 7 according to the present invention.

FIG. 10 is an enlarged view of the structure of the portion D in FIG. 7 according to the present invention.

FIG. 11 is a longitudinal sectional view of a positioning mechanism of the present invention.

FIG. 12 is a cross-sectional view of a portion of the positioning mechanism of the present invention.

The reference signs are:

1 resistor mechanism, 101 precision resistor, 102 outer ring plastic-sealed shell, 103 rod-shaped lead, 2 conductor connecting mechanism, 21 first external sleeve, 22 external limiting retainer, 23 internal limiting retainer, 24 middle separating block, 25 arc-shaped protecting ring, 26 connecting and supporting section, 27 second external sleeve, 28 sleeve connecting ring, 3 resetting mechanism, 31 prefabricated limiting empty groove, 32 fusing block, 33 separating plate, 34 heat-conducting metal rod, 35 torsional spring connecting section, 36 resetting type ruler spring section, 37 positioning and fixing rod, 38 annular bearing seat, 39 bearing type cantilever, 4 lead jack mechanism, 41 central positioning sleeve, 42 lead placing groove, 43 central positioning and fixing ring, 44 outer ring sleeve, 45 guide sheet type internal thread tooth groove, 46 corresponding type external thread groove, 47 guide sheet type spiral joint pipe section, 48 conductor type cantilever, 49 elastic arc sheet conductor, 410 limiting and 411 joint type limiting plate, 5 gas auxiliary positioning mechanism, 51 first annular gasbag, 52 second annular gasbag, 53 one way air valve, 54 first positioning chamber, 55 buffer chamber, 56 second positioning chamber, 6 positioning mechanism, 61 sucking disc cover, 62 supporting disc, 63 auxiliary reset spring, 64 external disc body sheath, 65 magnet sealing block, 66 semicircle sealing clamping block, 67 semicircle clamping groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: referring to the attached drawings 1-10 of the specification, the semi-precision plastic package resistor provided by the invention comprises a resistance mechanism 1 for adjusting the magnitude of current blocking effect in a circuit, wherein both ends of the resistance mechanism 1 are electrically connected with conductor connecting mechanisms 2 for assisting in connecting elements at different levels, a reset mechanism 3 serving as a transmission power source is installed inside the conductor connecting mechanisms 2, a wire jack mechanism 4 for positioning a resistance wire is installed in an inner cavity of the conductor connecting mechanism 2 through the reset mechanism 3, as shown in fig. 5 and 7, the reset mechanism 3 serves as a power source when the wire jack mechanism 4 rotates, the power source is a reset type scale spring section 36 of the reset mechanism 3, and after the reset type scale spring section 36 is loosened, an inner ring of the reset mechanism resets through rotation, so that other parts are driven to rotate correspondingly;

the reset mechanism 3 comprises a prefabricated limit empty groove 31, as shown in fig. 6, 7 and 8, a fuse block 32 is placed in the inner cavity of the prefabricated limit empty groove 31 in a suspension manner, a heat-conducting metal rod 34 for heat conduction is installed at the top of the fuse block 32, partition plates 33 for preventing the fuse block 32 from falling off are installed at the top and the bottom of the fuse block 32, a torsional spring connecting section 35 is installed at the bottom of the fuse block 32, and a reset type square spring section 36 is installed in the inner cavity of the conductor connecting mechanism 2; meanwhile, as a further scheme, the wire jack mechanism 4 comprises a central positioning sleeve 41, two outer ring sleeves 44 which move relatively are sleeved on the outer wall of the central positioning sleeve 41, a guide vane type internal thread tooth space 45 is installed on the inner wall of the outer ring sleeve 44, corresponding type external thread grooves 46 which are arranged corresponding to the guide vane type internal thread tooth space 45 one to one are formed on the outer wall of the central positioning sleeve 41, a guide vane type spiral joint pipe section 47 is installed on the inner wall of each corresponding type external thread groove 46 in a joint manner, the tooth pitch and the tooth space direction of each corresponding type external thread groove 46 are arranged in a mirror symmetry manner along the vertical central line of the central positioning sleeve 41, a conductor type cantilever 48 penetrates through the inner part of the outer ring sleeve 44, an elastic arc sheet conductor 49 is installed at one end of the conductor type cantilever 48, after the reset type spring section 36 loosens the constraint of the torsion spring joint section 35, the reset type spring section 36 performs rotary elastic recovery, the central positioning sleeve 41 is made to rotate simultaneously, the two outer ring sleeves 44 are driven to move in opposite directions by utilizing the principle of a ball screw, when the elastic arc sheet conductor 49 is separated from the limit of the built-in limit retainer 23, the wire part of the resistance mechanism 1 is positioned and fixed, and meanwhile, the wire part is electrically connected with the pipe section 47 in a guide sheet type spiral fit manner;

when the reset type square spring section 36 is fixed through the torsional spring connecting section 35, the reset type square spring section keeps an elastic recovery rolling state, and the torsional spring connecting section 35 also has resilience; the outer ring sleeve 44 has flame retardant and insulating characteristics, and the conductor type cantilever 48 is electrically connected with the guide vane type internal thread tooth groove 45 in the outer ring sleeve 44; the conductor type cantilever 48 and the elastic arc sheet conductor 49 are made of super elastic metal conductor materials, and under a normal state, the elastic arc sheet conductor 49 is arranged in a plane, and the conductor type cantilever 48 is arranged in an obtuse angle type cantilever; the elastic arc sheet conductors 49 can restore to the flat plate shape after being separated from the constraint of the built-in limiting retainer 23, and the two elastic arc sheet conductors 49 achieve the clamping effect on the conducting wire part of the resistor through the obtuse angle shape of the conductor type cantilever 48.

What needs to be actually explained is: when the torsion spring connecting section 35 is disconnected from the fuse block 32, the torsion spring connecting section 35 contracts to one side of the reset type blade spring section 36 by elasticity, as shown in fig. 10, the reset type blade spring section 36 generates a power source for restoring elasticity to drive the center positioning sleeve 41 to rotate, when the center positioning sleeve 41 rotates, the corresponding type external thread groove 46 is engaged with the guide piece type internal thread tooth groove 45 to push the outer ring sleeve 44 to move towards the end of the conductor connecting mechanism 2, so as to push the conductor type cantilever 48 and the elastic arc piece conductor 49 to bind the rod-shaped conducting wire 103 outside the conductor connecting mechanism 2, the elastic arc piece conductor 49 restores the plane and forms clamping, from the elastic arc piece conductor 49 to the conductor type cantilever 48 to the guide piece type internal thread tooth groove 45 to the guide piece type spiral joint pipe section 47 to the guide piece type internal thread tooth groove 45, the conductor type cantilever 48 and the elastic arc piece conductor 49 which are arranged in mirror symmetry, a completed electrical connection path is formed.

Example 2: in this embodiment, as shown in fig. 10, the heat-conducting metal rod 34 is in a rod-like structure, and the heat-conducting metal rod 34 is inserted into the middle region of the fuse block 32, wherein the length ratio of the heat-conducting metal rod 34 to the fuse block 32 is 1: 2; after the installation of the wire part of the resistance mechanism 1 is completed, the heat-conducting metal rod 34 is touched by an electric welding pen, so that the local temperature of the heat-conducting metal rod 34 rises, the fusing block 32 is fused, and the effects of breaking and releasing the reset type scale spring section 36 from the constraint can be achieved.

Meanwhile, the partition plate 33 has flame retardancy; when the heat-conductive metal rod 34 is heated, the fuse block 32 fuses, and the partition plate 33 will not fuse.

What needs to be actually explained is: in the condition that breaks away from the constraint to torsional spring linking section 35, utilize the area of normal use's electric welding pen spot welding heat-conducting type metal pole 34, heat-conducting type metal pole 34 carries out corresponding heat-conduction to fuse block 32 for fuse block 32 fuses, and after fuse block 32 fuses, takes off fuse block 32 first division board 33, and torsional spring linking section 35 can break away from the constraint, can continue corresponding follow-up transmission work.

Example 3: in the process of performing electrical connection on the resistance mechanism 1, as an optimal electrical connection circuit, as shown in fig. 9, the guide sheet type internal thread tooth groove 45 is electrically connected to the guide sheet type spiral fitting pipe section 47, and two sections of guide sheet type spiral fitting pipe sections 47 arranged in a mirror image manner along the center positioning sleeve 41 in the corresponding type external thread groove 46 are electrically connected to each other, and the spiral guide sheet type spiral fitting pipe sections 47 are utilized to perform electrical connection, so that more connection cables are stacked in a reduced space, and the actual utilization rate of the space is improved.

Meanwhile, as a preferred embodiment of the above scheme, the material of the reset-type ruler spring section 36 is nitinol, and the reset-type ruler spring section 36 has superelasticity in a normal state, and the critical memory temperature of the memory metal of the reset-type ruler spring section 36 is 130 ℃; after the reset type ruler spring section 36 has completed rotation and reached the relaxed state, the local temperature of the reset type ruler spring section 36 rises through heat conduction, and the memory temperature of the reset type ruler spring section 36 makes itself restore to the rolling state, so that the central positioning sleeve 41 is reversed, and the resistance mechanism 1 is quickly separated from the electrical connection state.

In addition, in fig. 6, 7 and 9, a positioning fixing rod 37 for connecting the conductor connecting mechanism 2 is installed at one end of the reset type square spring section 36, an annular bearing seat 38 is installed in the reset type square spring section 36 which is shown by the surrounding body, a plurality of bearing type cantilevers 39 are fixedly installed on the inner wall of the annular bearing seat 38 in an annular equidistant manner, wherein the annular bearing seat 38 and the bearing type cantilevers 39 are used for connecting the reset type square spring section 36, so that the reset type square spring section 36 can drive the central positioning sleeve 41 to rotate clockwise and counterclockwise at the same time when rotating, and corresponding action transmission is achieved.

Next, a wire placing groove 42 for placing a resistance wire is formed in the inner cavity of the center positioning sleeve 41, a center positioning fixing ring 43 is fixedly mounted in the middle of the outer wall of the center positioning sleeve 41, and the center positioning fixing ring 43 is fixedly connected with the bearing type cantilever 39 through a bolt, so that a fixed state is formed.

As a further scheme, as shown in fig. 7 and 8, a limiting support rod 410 is fixedly installed on the outer wall of the outer ring sleeve 44, a fitting type limiting plate 411 for stabilizing the movement direction of the outer ring sleeve 44 is fixedly installed at one end of the limiting support rod 410, a T-shaped anti-falling slider is arranged on the outer wall of the fitting type limiting plate 411, the conductor connecting mechanism 2 comprises a first external sleeve 21, a chute corresponding to the T-shaped anti-falling slider is formed in the inner wall of the first external sleeve 21, the T-shaped anti-falling slider of the fitting type limiting plate 411 is slidably clamped in the corresponding chute, and the horizontal and transverse movement of the outer ring sleeve 44 achieves a limiting effect; the outer sleeve 44 is allowed to maintain a more stable movement along the trajectory line when performing the horizontal movement.

In addition, the outer wall of the precision resistor 101 of the resistor mechanism 1 is sleeved with an outer ring plastic-sealed shell 102, two ends of the precision resistor 101 are electrically connected with rod-shaped wires 103, and the rod-shaped wires 103 are used for electrically connecting the self resistor elements with other acting elements.

It should be noted that: based on the above solution, in the implementation of the present solution, the resistor mechanism 1 utilizes the spiral guide plate material of the guide plate type spiral fitting pipe section 47 to perform the electrical contact of the element, corresponding electrical connection is completed with the space reduced, and after the reset type square spring section 36 is kept in a relaxed state, the rod-shaped wires 103 of the resistance mechanism 1 are also electrically connected with corresponding elements, and when short circuit and other conditions occur in the circuit, the local temperature will rise, the wire temperature under normal state is 70-120 degrees, when the temperature is raised to 130 degrees centigrade as proposed in the present scheme, the reset type square spring section 36 is restored to the original rolling state through its own memory temperature, meanwhile, the center positioning sleeve 41 is driven to rotate reversely, so that the outer ring sleeve 44 drives the elastic arc sheet conductor 49 to loose the electrical connection to the rod-shaped conducting wire 103, thereby achieving the effect of assisting in protecting the elements in the circuit.

Example 4: the two ends of the first external sleeve 21 are respectively coated with an external limiting guard ring 22, an internal limiting guard ring 23 for inserting the rod-shaped wire 103 is arranged in an inner cavity of the external limiting guard ring 22, a group of middle separating blocks 24 are arranged between the external limiting guard ring 22 and the internal limiting guard ring 23, the number of each group of the middle separating blocks 24 is at least two, an arc-shaped protecting ring 25 is arranged on one side of the external limiting guard ring 22, a group of linking supporting sections 26 are arranged on one side of the internal limiting guard ring 23, and the number of each group of the linking supporting sections 26 is at least two; the built-in limiting retainer 23 is used for preventing the elastic arc sheet conductor 49 from keeping a bending and rolling state under the condition of not separating from the limiting position, and the middle separating block 24 is used for assisting in supporting the built-in limiting retainer 23.

Meanwhile, the external limiting guard ring 22, the middle separating block 24 and the internal limiting guard ring 23 have the characteristics of flame retardance and insulation, the internal limiting guard ring 23 is made of hard materials, and the connecting supporting sections 26 and the elastic arc sheet conductors 49 are arranged in a one-to-one correspondence mode.

As a preferred embodiment in this scheme, wherein the middle of the first external sleeve 21 is provided with a second external sleeve 27, a sleeve connection ring 28 is connected between the first external sleeve 21 and the second external sleeve 27, the second external sleeve 27 and the sleeve connection ring 28 have flame retardant and insulating characteristics, and the sleeve connection ring 28 also has a plastic characteristic, so that in the process of electrically connecting the circuit board, the appearance can be bent when a narrow position occurs, and the convenience of connection is improved.

It should be noted that: when the elastic arc sheet conductor 49 is bent and not fixed with the rod-shaped lead 103, the elastic arc sheet conductor 49 and the conductor type cantilever 48 are both in a compression deformation state, so that the electric connection element of the lead jack mechanism 4 is protected and protected sufficiently, and when the conductor type cantilever 48 and the elastic arc sheet conductor 49 are forced to extend to the outside of the conductor connection mechanism 2, the self-form can be recovered, and the lead of other action elements such as the rod-shaped lead 103 can be fixed.

Example 5: as shown in fig. 6-10, the engaging support section 26 is made of super elastic conductive material, and the guide-plate-shaped internal thread tooth grooves 45 and the screw-threaded direction of the engaging support section 26 face the central region of the center positioning sleeve 41, so that when the center positioning sleeve 41 is rotated, the guide-plate-shaped internal thread tooth grooves 45 drive the outer ring sleeve 44 to move transversely toward the central region of the center positioning sleeve 41; when the outer ring sleeve 44 moves in the central area of the wire center positioning sleeve 41, the elastic arc conductor 49 is pressed on the surface of the connecting support section 26 and electrically contacts the rod-shaped lead 103, thereby reducing the exposed electrically conductive elements and improving the safety of use.

It should be further noted that, compared with the embodiment 4, the track directions of the corresponding external thread grooves 46 are opposite, when the outer ring sleeve 44 rotates, the elastic arc conductor 49 moves towards the inside of the conductor connecting mechanism 2 and is pressed on the bendable connecting support section 26, so as to achieve normal electrical connection and reduce the potential safety hazard of the exposed sensitive electrical components.

Example 6: as shown in fig. 7-10, a gas-assisted positioning mechanism 5 for limiting and fixing the rod-shaped lead 103 is installed in the inner cavity of the lead jack mechanism 4, the gas-assisted positioning mechanism 5 includes a first annular airbag 51, one side of the first annular airbag 51 is integrally connected with a second annular airbag 52, and one-way gas valves 53 are installed in the inner cavities of the first annular airbag 51 and the second annular airbag 52.

Meanwhile, the ratio of the gas volume of the inner cavity of the first annular air bag 51 to the gas volume of the inner cavity of the second annular air bag 52 is 2:1-3: 1; the limit area surrounded by the inner circles of the first annular airbag 51 and the second annular airbag 52 is a first positioning chamber 54, a buffer chamber 55 and a second positioning chamber 56 in sequence; because the gas volume of the first annular airbag 51 is larger than that of the second annular airbag 52, in the inserting process of the rod-shaped lead 103, after the rod-shaped lead contacts the second positioning chamber 56, the gas in the inner cavity of the first annular airbag 51 moves to the inner cavity of the second annular airbag 52 through the one-way gas valve 53, and the rod-shaped lead 103 is extruded and limited.

Immediately after the first annular airbag 51 and the second annular airbag 52 are filled with the flame-retardant but uninsulated gas, when the wire inserting mechanism 4 is hot-melted, the gas auxiliary positioning mechanism 5 is broken, so as to achieve the effect of locally assisting in flame retardation.

It should be noted that: when the rod-shaped lead 103 is inserted into the inner cavity of the first positioning cavity 54, the inner cavities of the first positioning cavity 54 and the buffer cavity 55 are in an unfixed state, when the rod-shaped lead is extruded into the inner cavity of the first annular air bag 51, gas in the inner cavity of the first annular air bag 51 enters the inner cavity of the second annular air bag 52 through the one-way gas valve 53, the effect of limiting and fixing the rod-shaped lead 103 by the second annular air bag 52 can be realized, the corresponding gas volume ratio of the first annular air bag 51 to the second annular air bag 52 is selected according to the lead diameter of the rod-shaped lead 103, the fixing tightness in different states can be realized, and in addition, after the central positioning sleeve 41 is damaged, the flame-retardant gas in the first annular air bag 51 and the second annular air bag 52 can achieve secondary protection, namely, the flame-retardant effect.

Example 7: the inner wall of each second annular air bag 52 is communicated with two corresponding positioning mechanisms 6, and the gas auxiliary positioning mechanism 5 and the positioning mechanisms 6 have the characteristics of flame retardance and insulation.

Meanwhile, as shown in fig. 11 to 12, the positioning mechanism 6 includes a suction cup cover 61 in the shape of a suction cup, a support plate 62 is separated from the middle of the suction cup cover 61, an auxiliary reset elastic sheet 63 is installed on one side of the support plate 62, the auxiliary reset elastic sheet 63 has superelasticity, an external plate sheath 64 is sleeved outside both the support plate 62 and the auxiliary reset elastic sheet 63, and a formed state can be normally discharged when an air flow passes through, and when the air flow stops, the two suction cup covers 61 are attached to the outer wall of the rod-shaped wire 103 to form a fixed state.

As a further example, the number of the external disk sheaths 64 is at least four, and a plurality of adjacent external disk sheaths 64 are arranged in a complete circular shape after being placed, so as to form a simple valve capable of being closed.

In addition, the tip of each external disk body sheath 64 is connected with a magnet sealing block 65, and the plurality of external disk body sheaths 64 are normally kept in a horizontal plane state through magnetic attraction of the magnet sealing blocks 65.

A plurality of semicircular sealing fixture blocks 66 and semicircular clamping grooves 67 which are arranged in a one-to-one correspondence manner are respectively arranged on straight edges on two sides of the external disk body sheath 64, when the semicircular sealing fixture blocks 66 are clamped in the inner cavity of the semicircular clamping grooves 67, a plurality of adjacent external disk body sheaths 64 keep a tightly-fitted closed state, and a good sealing effect is formed by utilizing the clamping type and the magnetic suction form.

In the case of the fixing protocol for example 6, it is further specified that: in-process fixing is carried out pole form wire 103, adsorbs each other through two adjacent sucking disc covers 61, reaches the effect of location and fixed pole form wire 103, and the form setting of external disk body sheath 64 simultaneously for whole can carry out under the fixed condition of sucking disc type, through the gaseous of the more convenient release fire-retardant type of thermal expansion.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a semi-precise plastic envelope resistor, is including being arranged in resistance mechanism (1) of regulating circuit medium-current blocking effect size, the equal electric connection in both ends of resistance mechanism (1) has conductor coupling mechanism (2) that are used for the auxiliary connection at the component at different levels, its characterized in that: a reset mechanism (3) serving as a transmission power source is installed inside the conductor connecting mechanism (2), a wire jack mechanism (4) used for positioning a resistance wire is installed in an inner cavity of the conductor connecting mechanism (2) through the reset mechanism (3), and the reset mechanism (3) serves as a power source when the wire jack mechanism (4) rotates;

the reset mechanism (3) comprises a prefabricated limiting empty groove (31), a fusing block (32) is placed in the inner cavity of the prefabricated limiting empty groove (31) in a suspending mode, a heat-conducting metal rod (34) for heat conduction is installed at the top of the fusing block (32), partition plates (33) for preventing the fusing block (32) from falling off are installed at the top and the bottom of the fusing block (32), a torsion spring connecting section (35) is installed at the bottom of the fusing block (32), and a reset type spring section (36) is installed in the inner cavity of the conductor connecting mechanism (2); the wire jack mechanism (4) comprises a central positioning sleeve (41), the outer wall of the central positioning sleeve (41) is sleeved with two outer ring sleeves (44) which move relatively, the inner wall of the outer ring sleeve (44) is provided with a guide sheet type internal thread tooth groove (45), the outer wall of the central positioning sleeve (41) is provided with corresponding outer thread grooves (46) which are arranged corresponding to the guide vane type inner thread tooth grooves (45) one by one, the inner wall of the corresponding external thread groove (46) is provided with a guide piece type spiral joint pipe section (47) in a joint shape, the tooth pitch and the tooth space direction of the corresponding external thread groove (46) are arranged in mirror symmetry along the vertical central line of the central positioning sleeve (41), a conductor type cantilever (48) penetrates through the inner part of the outer ring sleeve (44), one end of the conductor type cantilever (48) is provided with an elastic arc sheet conductor (49);

meanwhile, when the reset type square spring section (36) is fixed through the torsional spring connection section (35), the reset type square spring section keeps an elastic recovery rolling state, and the torsional spring connection section (35) also has resilience; the outer ring sleeve (44) has the characteristics of flame retardance and insulation, and the conductor type cantilever (48) is electrically connected with the guide vane type internal thread tooth groove (45) in the outer ring sleeve (44); the conductor type cantilever (48) and the elastic arc sheet conductor (49) are made of super-elastic metal conductor materials, and in a normal state, the elastic arc sheet conductor (49) is arranged in a plane, and the conductor type cantilever (48) is arranged in an obtuse angle type cantilever.

2. The semi-precision plastic package resistor of claim 1, characterized in that: the heat-conducting metal rod (34) is in a rod-shaped structure, and the heat-conducting metal rod (34) is inserted into the middle area of the fusing block (32), wherein the length ratio of the heat-conducting metal rod (34) to the fusing block (32) is 1: 2;

while the separator (33) is flame retardant;

the guide sheet type internal thread tooth grooves (45) are electrically connected with the guide sheet type spiral joint pipe sections (47), and the two sections of the guide sheet type spiral joint pipe sections (47) which are arranged in the corresponding type external thread grooves (46) in a mirror image mode along the central positioning sleeve (41) are electrically connected with each other.

3. The semi-precision plastic package resistor of claim 2, characterized in that: the reset type square spring section (36) is made of nickel-titanium memory alloy, the reset type square spring section (36) has the characteristic of superelasticity in a normal state, and the critical memory temperature of memory metal of the reset type square spring section (36) is 130 ℃;

the utility model discloses a conductor connection mechanism's reduction type scale spring section (36) is including the reduction type scale spring section, the one end of reduction type scale spring section (36) is installed and is used for connecting the location dead lever (37) of conductor coupling mechanism (2), is that the surround body shows install annular bearing seat (38) in reduction type scale spring section (36), the inner wall of annular bearing seat (38) is a plurality of bearing type cantilevers (39) of annular equidistance fixed mounting.

4. The semi-precision plastic package resistor according to claim 3, characterized in that: a lead placing groove (42) for placing a resistance lead is formed in the inner cavity of the central positioning sleeve (41), a central positioning fixing ring (43) is fixedly installed in the middle of the outer wall of the central positioning sleeve (41), and the central positioning fixing ring (43) is fixedly connected with the bearing type cantilever (39) through a bolt;

the outer wall of the outer ring sleeve (44) is fixedly provided with a limiting supporting rod (410), one end of the limiting supporting rod (410) is fixedly provided with a laminating limiting plate (411) used for stabilizing the motion direction of the outer ring sleeve (44), the outer wall of the laminating limiting plate (411) is provided with a T-shaped anti-falling sliding block, the conductor connecting mechanism (2) comprises a first external sleeve (21), the inner wall of the first external sleeve (21) is provided with a sliding groove corresponding to the T-shaped anti-falling sliding block, the T-shaped anti-falling sliding block of the laminating limiting plate (411) is slidably clamped in the corresponding sliding groove, and the horizontal transverse motion of the outer ring sleeve (44) is limited;

resistance mechanism (1) includes precision resistor (101), the outer wall cover of precision resistor (101) is equipped with outer lane plastic envelope (102), the equal electric connection in both ends of precision resistor (101) has shaft-like wire (103).

5. The semi-precision plastic package resistor of claim 4, wherein: the two ends of the first external sleeve (21) are respectively coated with an external limiting guard ring (22), an inner cavity of each external limiting guard ring (22) is provided with an internal limiting guard ring (23) for inserting the rod-shaped lead (103), a group of middle separating blocks (24) are arranged between each external limiting guard ring (22) and each internal limiting guard ring (23), the number of each group of the middle separating blocks (24) is at least two, one side of each external limiting guard ring (22) is provided with an arc-shaped protecting ring (25), one side of each internal limiting guard ring (23) is provided with a group of linking supporting sections (26), and the number of each group of the linking supporting sections (26) is at least two;

the external limiting guard ring (22), the middle separating block (24) and the internal limiting guard ring (23) have the characteristics of flame retardance and insulation, the internal limiting guard ring (23) is made of hard materials, and the connecting support sections (26) and the elastic arc sheet conductors (49) are arranged in a one-to-one correspondence manner;

the middle part of first external sleeve (21) is equipped with the external sleeve of second (27), be connected with sleeve joint ring (28) between first external sleeve (21) and the external sleeve of second (27), the external sleeve of second (27) links up ring (28) with the sleeve and has fire-retardant and insulating characteristic, sleeve joint ring (28) still has the characteristic of mouldable type.

6. The semi-precision plastic package resistor according to claim 5, characterized in that: the connecting support section (26) is made of super-elastic conductor materials, and the thread directions of the guide sheet type internal thread tooth grooves (45) and the connecting support section (26) face to the central area of the central positioning sleeve (41), so that the central positioning sleeve (41) drives the outer ring sleeve (44) to transversely move towards the central area of the central positioning sleeve (41) through the guide sheet type internal thread tooth grooves (45) when rotating.

7. The semi-precision plastic package resistor of claim 6 or 5, wherein: a gas auxiliary positioning mechanism (5) for limiting and fixing the rod-shaped lead (103) is installed in the inner cavity of the lead jack mechanism (4), the gas auxiliary positioning mechanism (5) comprises a first annular air bag (51), one side of the first annular air bag (51) is integrally connected with a second annular air bag (52), and one-way air valves (53) are arranged in the inner cavities of the first annular air bag (51) and the second annular air bag (52);

the ratio of the gas volume of the inner cavity of the first annular air bag (51) to the gas volume of the inner cavity of the second annular air bag (52) is 2:1-3: 1; the limiting area surrounded by the inner rings of the first annular air bag (51) and the second annular air bag (52) is a first positioning chamber (54), a buffer chamber (55) and a second positioning chamber (56) in sequence.

8. The semi-precision plastic package resistor according to claim 7, characterized in that: the first annular air bag (51) and the second annular air bag (52) are filled with flame-retardant but uninsulated gas, and the inner wall of each second annular air bag (52) is communicated with two corresponding positioning mechanisms (6);

the gas auxiliary positioning mechanism (5) and the positioning mechanism (6) both have the characteristics of flame retardance and insulation.

9. The semi-precision plastic package resistor of claim 8, wherein: the positioning mechanism (6) comprises a sucker cover (61) in a sucker shape, a supporting plate (62) is arranged in the sucker cover (61) at an interval, an auxiliary reset elastic sheet (63) is arranged on one side of the supporting plate (62), the auxiliary reset elastic sheet (63) has superelasticity, and external disk body sheaths (64) are sleeved on the supporting plate (62) and the auxiliary reset elastic sheet (63);

the number of the external disk body sheaths (64) is at least four, and a plurality of adjacent external disk body sheaths (64) are arranged in a complete circular shape after being placed.

10. The semi-precision plastic package resistor of claim 9, characterized in that: the tip of each external disk body sheath (64) is connected with a magnet sealing block (65), and the plurality of external disk body sheaths (64) are kept in a horizontal plane state through magnetic attraction of the magnet sealing blocks (65) in a normal state;

the two side straight edges of the external disk body sheath (64) are respectively provided with a plurality of semicircular sealing clamping blocks (66) and semicircular clamping grooves (67) which are arranged in a one-to-one correspondence manner, and when the semicircular sealing clamping blocks (66) are clamped in the inner cavity of the semicircular clamping grooves (67), the plurality of adjacent external disk body sheaths (64) keep a tightly-attached closed state.