CN212659373U - Potentiometer with pressing self-locking switch - Google Patents

Abstract

The utility model discloses a potentiometre of self-locking switch is pressed in area, including shell body, potentiometre part, switch part, the potentiometre part includes the axle sleeve and installs pivot on the axle sleeve, switch part includes locating lever, slider, knob axle, knob handle, pressure spring, transmission cover, adapter sleeve and electrically conductive on-off device, slider through-hole and transmission cover are installed in this through-hole, can relative rotation and can not relative back-and-forth movement between slider and the transmission cover, the transmission cover is equipped with central through-hole and pivot and arranges in this central through-hole, the pressure spring is located between the through-hole front portion pore wall of transmission cover and shell body, the transmission cover is connected with the adapter sleeve, the knob axle is connected with the adapter sleeve. The utility model discloses can realize that each other does not influence between potentiometre function and the switch function and two kinds of functions, the potentiometre part of being convenient for and the independent processing of switch part, independent test and fast assembly, the control quality of being convenient for, the product percent of pass is high, product reliability is high, is applicable to the equipment that the reliability requirement is high.

Description

Potentiometer with pressing self-locking switch

Technical Field

The utility model relates to a potentiometre of taking switch in mainly used circuit or equipment especially relates to a potentiometre of self-locking switch is pressed in area.

Background

The potentiometer with the switch has the on-off function and the potentiometer function, namely the voltage regulation or resistance detection function, and is mainly used for controlling a switching power supply and controlling the voltage in a circuit or equipment. In order to facilitate the switching operation, a push self-locking switch is generally adopted, a corresponding potentiometer is generally called a potentiometer with the push self-locking switch, the basic structure of the potentiometer comprises an outer shell, a potentiometer component and a switch component, the potentiometer component and the switch component are mature technologies, but the connection structure between the potentiometer component and the switch component is an important factor influencing the performance of the whole potentiometer.

At present, a potentiometer with a pressing self-locking switch is still in an application initial stage, and has the problems of few varieties, difficult control of a technological process, low product reliability, narrow application field and the like. Traditional potentiometre of self-locking switch is pressed in area adopts metal rotating shaft and axle sleeve type mounting structure, has following defect:

firstly, the potentiometer component and the switch component are connected and fixed, the work between the potentiometer component and the switch component is easy to interfere and lose efficacy, and the defects of the electrical performance and the mechanical performance of the potentiometer component and the switch component can be tested only after the whole product is assembled, the quality control of the process is difficult, the product percent of pass is low, the product reliability is low, and the potentiometer component and the switch component are not suitable for equipment with high reliability requirements.

Secondly, connecting terminals of the potentiometer component and the switch component adopt a wire welding mode, 5 wires are required to be welded on each potentiometer with the pressing self-locking switch, 3 wires are welded on each potentiometer, 2 wires are welded on each switch, the wires occupy large external space of the equipment, are complicated to wire, are easy to have electrical faults such as wrong connection, missing connection and the like, are difficult to troubleshoot, are not beneficial to meeting the requirements of miniaturization, standardization and reliability of the equipment, and prevent most of applications of the potentiometers on small-sized equipment; in addition, the shaft sleeve type installation mode also occupies a large space, which is not favorable for the application of the potentiometer to a large number of small-sized devices.

Thirdly, the metal shaft and the knob are fastened and connected by the screw, the knob cannot be made of transparent materials such as glass and the like, and the light guide function cannot be realized, so that the working mode of the potentiometer on the equipment cannot be quickly and accurately identified in an environment with insufficient illumination, the operation of the equipment is hindered, and the application of the potentiometer on the equipment in the field is limited.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to provide a potentiometer having a press self-locking switch, which is connected to a switch component by non-fixed transmission to realize a modular structure.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

a potentiometer with a pressing self-locking switch comprises an outer shell, a potentiometer component and a switch component, wherein the potentiometer component comprises a shaft sleeve and a rotating shaft arranged on the shaft sleeve, the rotating shaft is used for driving an electric brush in the potentiometer component to rotate, the switch component comprises a positioning rod, a sliding block, a knob shaft and a knob handle, a groove is formed in the outer wall of the outer shell, a through hole is formed in the outer shell, a communication channel is formed between the groove and the through hole of the outer shell, a first end of the positioning rod is arranged at one end of the groove of the outer shell and cannot move towards the other end, the positioning rod penetrates through the communication channel of the outer shell, a pressing self-locking groove is formed in the sliding block arranged in the through hole in the rear section of the outer shell, a second end of the positioning rod is arranged in the pressing self-locking groove, and the first, the second end of knob axle with the knob handle is connected its characterized in that: the switch component further comprises a pressure spring, a transmission sleeve, a connecting sleeve and a conductive on-off device, the potentiometer component is arranged at the front part of the outer shell, the sliding block is provided with a through hole in the front-back direction, the transmission sleeve is arranged in the through hole, the sliding block and the transmission sleeve can rotate relatively and cannot move back and forth relatively, the transmission sleeve is provided with a central through hole in the front-back direction, the radial cross section of the central through hole is in a non-regular circular shape, the rotating shaft is arranged in the central through hole of the transmission sleeve, the radial cross section of the rotating shaft is in a non-regular circular shape, the pressure spring is sleeved outside the rotating shaft through the central through hole and is positioned between the front end of the transmission sleeve and the front hole wall of the through hole of the outer shell, the rear section of the transmission sleeve is provided with a radial blind hole, the connecting sleeve is provided with a through hole in the front, the anterior segment of adapter sleeve is equipped with radial through-hole, and the one end of bolt is passed radial through-hole is placed in realize in the radial blind hole the transmission cover with be connected between the adapter sleeve, the first end of knob axle is placed in the back end of adapter sleeve and can not relative rotation and relative movement around and, electrically conductive on-off device installs the slider with between the shell body and can realize the switch function when the slider is in different front and back positions.

In the structure, the pressure spring is used for generating an outward pushing elastic stress so as to realize the automatic reset function of the knob handle, the connecting sleeve and the transmission sleeve after moving forwards; the transmission sleeve is simultaneously matched with the connecting sleeve, the sliding block, the rotating shaft and the pressure spring, and aims to realize two functions, one is to sequentially drive the connecting sleeve, the transmission sleeve and the rotating shaft to rotate when the knob shaft rotates, and the sliding block does not rotate, the other is to sequentially drive the connecting sleeve, the transmission sleeve and the sliding block to move back and forth when the knob shaft moves back and forth, and the rotating shaft does not move back and forth, so that the two functions are not influenced with each other, and finally, the switch function and the potentiometer function are not influenced with each other, so that the purposes of saving space and not influencing the functions by integrating structures corresponding to the two functions together are realized, and meanwhile, an assembling structure convenient for quick assembly and disassembly is adopted, so that the potentiometer; the conductive on-off device can realize the switching function when the sliding block is at different front and back positions, the specific structure is determined according to the requirement, and the structure is not limited to the following structure, for example, a structure that front and back multi-finger contacts which are mutually conductively connected are correspondingly contacted with front and back contact plates can be adopted, and when the two multi-finger contacts are at different front and back positions, the two multi-finger contacts are respectively contacted with and not contacted with the two contact plates; the two ends of the positioning rod are respectively provided with a hook, a pressing self-locking groove arranged on the sliding block is matched with the positioning rod, after the sliding block is pushed to move forwards in place, the second end of the positioning rod enters the rear end of the pressing self-locking groove, after the thrust of the sliding block is released, the sliding block moves backwards by the pressure spring and is blocked by the rear part of the pressing self-locking groove, the sliding block cannot move backwards continuously, the transient stable state is kept, the conductive on-off device is in an on state at the moment, the sliding block is pushed to move forwards in place again and releases the thrust, under the action of the reset elastic force of the pressure spring, the sliding block can move backwards, the second end of the positioning rod can be finally positioned in the front part of the pressing self-locking groove, the purpose that the sliding block moves backwards in place to realize reset is achieved, the structure for pressing the self-locking groove is a mature structure in.

Preferably, in order to realize good conduction on-off control, the conduction on-off device comprises a reed, a multi-finger contact, a contact plate, a first conducting plate, a second conducting plate and a mounting base, wherein the reed is installed on the outer wall of the sliding block, the two multi-finger contacts are respectively installed on the reed and are mutually connected into a U shape, the mounting base is installed on the corresponding inner wall of the shell, the insulated contact plate is installed on the mounting base and is positioned in the shell, the contact plate is provided with a longer first conducting strip and a shorter second conducting strip in the front-back direction, the contacts of the two multi-finger contacts are respectively in contact with the first conducting strip and the second conducting strip and can slide back and forth, when the switch component is in an open state, the two multi-finger contacts are respectively in contact with the first conducting strip and the second conducting strip, the switch component is in an off state and corresponds to the multi-finger contact to be disconnected with the second conductive strip, the first conductive strip and the second conductive strip are respectively installed in the corresponding installation through holes in the shell body, one end of the first conductive strip and one end of the second conductive strip are respectively in conductive connection with the first conductive strip and the second conductive strip, and the other end of the first conductive strip and the other end of the second conductive strip are respectively used as a switch lead end of the switch component. The contact plate, the first conductive sheet and the second conductive sheet are preferably of an integrally molded structure.

Preferably, in order to facilitate the function that the sliding block and the transmission sleeve can rotate relatively and cannot move back and forth relatively, a convex ring with an increased outer diameter is arranged at the front end of the transmission sleeve, a concave ring with a decreased outer diameter is arranged at the front end of the sliding block, the convex ring is arranged in the concave ring, and the rear end of the sliding block is in surface contact with the front end surface of the connecting sleeve.

Preferably, in order to achieve a better rotation prevention effect, the radial sectional shapes of the central through hole of the driving sleeve and the rotating shaft include at least one straight edge.

Specifically, the pressure spring is a helical pressure spring.

Further, in order to achieve a better insulation effect to prevent the transmission sleeve and the connecting sleeve from being electrified, an insulation washer and a contact washer are arranged between the front end of the transmission sleeve and the rear end of the pressure spring, and the insulation washer is located between the contact washer and the front end of the transmission sleeve.

Further, in order to minimize product volume, avoid taking place the wire and connect wrong, meet electric installation problems such as hourglass, the potentiometre that self-locking switch was pressed in the area still includes printed circuit board, printed circuit board installs on the shell body, the last a plurality of printed wiring end that is equipped with of printed circuit board, it is a plurality of printed wiring end respectively with the potentiometre lead wire end of potentiometre part with the switch lead wire end of switch part corresponds the connection through the printed wiring.

Specifically, the printed wiring terminals include two switch printed wiring terminals and three potentiometer printed wiring terminals, the two switch printed wiring terminals are respectively connected with the switch lead terminals of the switch component through printed lines correspondingly, and the three potentiometer printed wiring terminals are respectively connected with the potentiometer lead terminals of the potentiometer component through printed lines correspondingly.

Further, in order to facilitate the installation of the potentiometer on other equipment and reduce the installation space as much as possible, an installation plate is installed at the rear end of the outer shell, a through hole for the connection sleeve to pass through is formed in the installation plate, riveting holes are respectively formed in the corresponding positions on the installation plate and the outer shell, and a riveting piece passes through the riveting holes in the installation plate and the outer shell; the mounting plate is also provided with a mounting hole for connecting with external equipment.

Furthermore, in order to facilitate the derivation of the internal light through the knob shaft, the external part is favorable for identification and the rapid positioning connection between the knob shaft and the connecting sleeve is realized, the contact surface between the outer wall of the front section close to the first end on the knob shaft and the inner wall of the rear section of the connecting sleeve is at least provided with a plane, an arc-shaped groove is arranged on the circumference of the rear section of the connecting sleeve, a radial linear through hole is arranged on the wall of the rear section of the connecting sleeve, a radial linear groove is arranged on the outer wall of the front section close to the first end on the knob shaft and corresponds to the linear through hole, the clamp spring is formed by connecting and integrally forming one section of arc-shaped elastic strip and one section of linear strip, the arc-shaped elastic strip of the clamp spring is arranged in the arc-shaped groove, the linear strip of the clamp spring is.

The beneficial effects of the utility model reside in that:

the utility model effectively integrates the positioning rod, the slide block, the knob shaft, the knob handle, the pressure spring, the transmission sleeve, the connecting sleeve and the conductive on-off device into a switch component, so that the transmission sleeve is matched with the connecting sleeve, the slide block, the rotating shaft and the pressure spring at the same time to realize two functions, one is to drive the connecting sleeve, the transmission sleeve and the rotating shaft to rotate in sequence when the knob shaft rotates, and the other is to drive the connecting sleeve, the transmission sleeve and the slide block to move back and forth when the knob shaft moves back and forth, and the rotating shaft does not move back and forth, so that the two functions are not influenced by each other, and finally, the switch function and the potentiometer function are not influenced by each other, so that the purposes of saving space and not influencing each other by integrating the structures corresponding to the two functions together are realized, and meanwhile, an assembly structure convenient for quick assembly, the work between the potentiometer and the switch component is not interfered with each other, the defects of the electrical performance and the mechanical performance of the potentiometer component and the switch component can be respectively tested before assembly, the process quality is convenient to control, the product qualification rate is high, the product reliability is high, and the device is suitable for equipment with high reliability requirements.

The utility model discloses an increase printed circuit board, set up a plurality ofly respectively on printed circuit board with the potentiometre lead wire end of potentiometre part and the switch lead wire end of switch part pass through the printing wiring end that the printing wiring corresponds the connection, it reduces wire occupation space and finished product volume to show, and avoided the wiring that wire welding mode exists loaded down with trivial details, the mistake splice easily takes place, electric installation problems such as missed-splice wire, be favorable to satisfying equipment miniaturization, standardization and reliability requirement, especially, do benefit to the application scene of potentiometre majority volume on the small-size equipment.

The utility model discloses an installation is used for the mounting panel of being connected with external equipment at the rear end of shell body, is convenient for install this potentiometre on other equipment and minimize installation space, does benefit to the application scene of potentiometre majority on small-size equipment more.

The utility model discloses a with the connection structure design between knob axle and the adapter sleeve just can avoid relative rotation and relative back-and-forth movement between the two through jump ring high-speed joint, avoid adopting traditional threaded connection structure (transparent material part does not basically pass through thin screw and with other part threaded connection), thereby can be the knob axle design for transparent axle, for example glass axle or transparent plastic axle etc., thereby can realize the leaded light function of knob axle, can be under the environment that illumination is not enough, derive the outer end of knob axle with the light of the inside light source of equipment, let the user quick, accurately discern the mode that potentiometre locates on the equipment, be convenient for carry out accurate equipment operation, the application demand of potentiometre on this field equipment has been satisfied.

Drawings

FIG. 1 is a front cross-sectional view of a potentiometer with a push-type self-locking switch according to the present invention, wherein a knob handle and a printed circuit board are partially cut;

fig. 2 is a top view of the potentiometer with a push self-locking switch according to the present invention;

FIG. 3 is a sectional view A-A of FIG. 2;

fig. 4 is a right enlarged view of the potentiometer with the push self-locking switch according to the present invention;

FIG. 5 is a cross-sectional view C-C of FIG. 4;

FIG. 6 is a cross-sectional view B-B of FIG. 2;

FIG. 7 is a front sectional view of the potentiometer with push self-locking switch according to the present invention, wherein the knob handle and the printed circuit board are partially cut away;

fig. 8 is one of schematic top views of a reed, a multi-finger contact, a contact plate, a first conductive sheet and a second conductive sheet of the potentiometer with a push-down self-locking switch according to the present invention, wherein the switch is in an off state;

fig. 9 is a second schematic view of the top view structure of the spring plate, the multi-finger contact, the contact plate, the first conductive plate and the second conductive plate of the potentiometer with the push self-lock switch according to the present invention, wherein the switch part is in the open state.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1 and 2, the potentiometer with the push self-locking switch of the present invention comprises an outer housing 4, a potentiometer component 3 and a switch component, wherein the potentiometer component 3 is installed at the front portion of the outer housing 4, the potentiometer component 3 comprises a shaft sleeve 7 and a rotating shaft 9 installed on the shaft sleeve 7, the rotating shaft 9 is used for driving a brush (see the brush 38 of fig. 6) in the potentiometer component 3 to rotate, the switch component comprises a positioning rod 6, a slider 12, a knob shaft 17 and a knob handle 18, a groove 5 is formed on the outer wall of the outer housing 4, a through hole (not marked in the figure) is formed in the outer housing 4, a communication channel (not marked in the figure) is formed between the groove 5 and the through hole of the outer housing 4, two ends of the positioning rod 6 are respectively provided with 90 ° hooks, a first end of the positioning rod 6 is installed at the front end of the groove 5 of the outer, a slide block 12 arranged in a through hole at the rear section of the outer shell 4 is provided with a pressing self-locking groove 11, the second end of a positioning rod 6 is arranged in the pressing self-locking groove 11, the first end (namely the front end) of a knob shaft 17 can push the slide block 12 to move back and forth, the second end (namely the rear end) of the knob shaft 17 is connected with a knob handle 18, the switch component also comprises a pressure spring 8, a transmission sleeve 13, a connecting sleeve 15 and a conductive on-off device, the slide block 12 is provided with a through hole in the front-back direction, the transmission sleeve 13 is arranged in the through hole, the slide block 12 and the transmission sleeve 13 can rotate relatively and cannot move back and forth relatively, the transmission sleeve 13 is provided with a central through hole 20 in the front-back direction, the radial cross section of the central through hole is in a non-regular circular shape, the rotating shaft 9 is arranged in the central through hole 20 of the transmission sleeve 13, the radial cross section of the rotating shaft 9 is in the non-regular circular shape, the rear section of transmission cover 13 is equipped with radial blind hole, and adapter sleeve 15 is equipped with the through-hole of fore-and-aft direction, and the anterior segment suit of adapter sleeve 15 is outside the rear section of transmission cover 13, and the anterior segment of adapter sleeve 15 is equipped with radial through-hole, and the one end of bolt 14 passes radial through-hole and places in the connection between transmission cover 13 and adapter sleeve 15 is realized to radial blind hole, and the first end of knob axle 17 is arranged in the rear section of adapter sleeve 15 and can not relative rotation and relative movement around and, electrically conductive on-off device installs between slider 12 and shell body 4 and can realize the switch function when slider 12 is in different front and back positions.

As shown in fig. 1 to 9, the preferred structure of the present invention is:

in order to realize good conductive on-off control, the conductive on-off device comprises a reed 24, a multi-finger contact 23, a contact plate 22, a first conductive plate 21, a second conductive plate 25 and a mounting base 26, wherein the reed 24 is mounted on the outer wall of the slider 12, the two multi-finger contacts 23 are respectively mounted on the reed 24 and are mutually connected into a U shape, the mounting base 26 is mounted on the corresponding inner wall of the outer shell 4, the insulated contact plate 22 is mounted on the mounting base 26 and is positioned in the outer shell 4, the contact plate 22 is provided with a front-back direction longer first conductive belt 45 and a shorter second conductive belt 44, the contacts of the two multi-finger contacts 23 are respectively contacted with the first conductive belt 45 and the second conductive belt 44 and can slide back and forth, the two multi-finger contacts 23 are respectively contacted with the first conductive belt 45 and the shorter second conductive belt 44 when the switch component is in an open state, the corresponding multi-finger contacts 23 are disconnected with the second conductive belt 44 when, the first conducting strip 21 and the second conducting strip 25 are respectively installed in corresponding installation through holes on the outer shell 4, one end of the first conducting strip 21 and one end of the second conducting strip 25 are respectively in conductive connection with the first conductive strip 45 and the second conductive strip 44, and the other end of the first conducting strip 21 and the other end of the second conducting strip 25 are respectively used as switch lead ends of the switch component;

in order to facilitate the function that the sliding block 12 and the transmission sleeve 13 can rotate relatively and can not move back and forth relatively, a convex ring (not marked in the figure) with an increased outer diameter is arranged at the front end of the transmission sleeve 13, a concave ring (not marked in the figure) with a decreased outer diameter is arranged at the front end of the sliding block 12, the convex ring is arranged in the concave ring, and the rear end of the sliding block 12 is in surface contact with the front end surface of the connection sleeve 13;

in order to achieve a better anti-rotation effect, the radial cross-sectional shape of the central through hole 20 of the driving sleeve 13 and the rotating shaft 9 comprises at least one straight edge;

specifically, the pressure spring 8 is a helical pressure spring;

in order to achieve better insulation effect to prevent the driving sleeve 13 and the connecting sleeve 15 from being electrified, an insulating washer 27 and a contact washer 28 are arranged between the front end of the driving sleeve 13 and the rear end of the pressure spring 8, and the insulating washer 27 is positioned between the contact washer 28 and the front end of the driving sleeve 13;

in order to reduce the volume of a product as much as possible and avoid the problems of wrong connection, leakage connection and other electric devices of a lead, the potentiometer with the press self-locking switch further comprises a printed circuit board 1, the printed circuit board 1 is installed on the outer shell 4, a plurality of printed wiring terminals are arranged on the printed circuit board 1, and the plurality of printed wiring terminals are respectively and correspondingly connected with a potentiometer lead end of the potentiometer part 3 and a switch lead end of the switch part through printed wires; specifically, the printed wiring terminals include two switch printed wiring terminals 30 and three potentiometer printed wiring terminals 29, the two switch printed wiring terminals 30 are respectively correspondingly connected with the switch lead terminals of the switch part through printed lines, and the three potentiometer printed wiring terminals 29 are respectively correspondingly connected with the potentiometer lead terminals of the potentiometer part 3 through printed lines;

in order to facilitate the potentiometer to be installed on other equipment and reduce the installation space as much as possible, the rear end of the outer shell 4 is provided with an installation plate 19, the installation plate 19 is provided with a through hole for the connection sleeve to pass through, the corresponding positions on the installation plate 19 and the outer shell 4 are respectively provided with a riveting hole 35, and the riveting sheet 34 passes through the riveting holes 35 on the installation plate 19 and the outer shell 4; the mounting plate 19 is also provided with a mounting hole 33 for connecting with external equipment;

in order to facilitate guiding out of internal light through the knob shaft 17, the external light is favorable for identification, and quick positioning connection between the knob shaft 17 and the connecting sleeve 15 is realized, at least one plane is arranged on a contact surface between the outer wall of a front section close to the first end of the knob shaft 17 and the inner wall of a rear section of the connecting sleeve 15, an arc-shaped groove 31 is arranged on the circumference of the rear section of the connecting sleeve 15, a radial straight through hole 32 is arranged on the wall of the rear section of the connecting sleeve 15, a radial straight groove (not marked in the figure) is arranged on the outer wall of the front section close to the first end of the knob shaft 17 and corresponds to the straight through hole 32, the snap spring 16 is formed by connecting and integrally forming a section of arc-shaped elastic strip and a section of straight strip, the arc-shaped elastic strip of the snap spring 16 is arranged in the arc-shaped groove 31, the straight strip of the.

Fig. 1, 2, 6 and 7 also show the front end cap 2 connected to the front end of the outer housing 4; figures 1, 2 and 7 also show a flap 10 mounted on a recess 5 on the outer wall of the outer housing 4; fig. 6 also shows the following specific structure of the potentiometer part 3: the potentiometer component 3 is arranged in an installation cavity formed by the front end cover 2 and the outer shell 4, the potentiometer end cover 36 is arranged at one end of the potentiometer shell 37, the rotating shaft 9 penetrates through the shaft sleeve 7 and then is connected with a single-connection base 40 arranged in the potentiometer shell 37, a spring collar 43 and a limited angle rotating sheet 41 are sleeved outside the rotating shaft 9 between the single-connection base 40 and the shaft sleeve 7, a sealing ring 42 is arranged between the limited angle rotating sheet 41 and the shaft sleeve 7, the brush 38 is arranged on the single-connection base 40 and can slide on a working belt of the resistor 39 in a contact manner, the rotating shaft 9 rotates to drive the single-connection base 40 and the brush 38 to synchronously rotate, the brush 38 slides on the working belt of the resistor 39 in a contact manner along the circumferential direction, different electric signals are output, and.

The potentiometer part of the potentiometer with the press self-locking switch has the following working principle:

as shown in fig. 1 and fig. 6, an operating voltage not greater than the rated voltage of the potentiometer is applied between two power terminals of the three potentiometer printed terminals 29 of the printed circuit board 1, the knob handle 18 and the knob shaft 17 rotate clockwise from the counterclockwise end position (start position), the knob shaft 17 rotates to sequentially drive the connecting sleeve 15, the transmission sleeve 13 and the rotating shaft 9 to rotate, the slider 12 does not rotate, the rotating shaft 9 rotates to drive the single-link base 40 and the brush 38 to synchronously rotate, and the brush 38 slides in a contact manner along the circumferential direction on the operating band of the resistor 39 to output different electrical signals, thereby realizing the potentiometer function.

The switch component of the potentiometer with the press self-locking switch has the following working principle:

as shown in fig. 1, 2 and 8, when the switching member is in the off state (initial state), the electrical open circuit between the two switching printed terminals 30 of the printed circuit board 1, the distance between the knob handle 18 and the rear end of the mounting plate 19 is at a maximum, the multi-finger contact 23 corresponding to the first conductive strip 45 is in contact with the first conductive strip 45, and the multi-finger contact 23 corresponding to the second conductive strip 44 is disconnected from the second conductive strip 44; when the switch component needs to be switched on, firstly, the knob handle 18 is pushed forwards, the knob shaft 17 moves forwards, the connecting sleeve 15, the transmission sleeve 13 and the sliding block 12 are sequentially driven to move forwards and backwards, meanwhile, the transmission sleeve 13 is sleeved on the rotating shaft 9 through the central through hole 20 of the transmission sleeve, the rotating shaft 9 does not move forwards and backwards, the transmission sleeve is loosened after being pushed in place, the sliding block 12 returns to the position where the positioning rod 6 is in a locking state under the action of the elastic force of the pressure spring 8, namely the position shown in fig. 7, at the moment, the two multi-finger contacts 23 are respectively contacted with the first conductive strip 45 and the second conductive strip 44, as shown in fig. 9, the two switch printed wiring terminals 30 of the printed circuit; when the switch needs to be disconnected, the knob handle 18 is pushed forward again, when the action stroke is finished, the positioning rod 6 slides out of the unlocking step of the pressing self-locking groove 11, the slide block 12 is unlocked with the positioning rod 6, after the unlocking, the slide block 12 is reset to the initial position under the action of the elastic force of the pressure spring 8, and as shown in fig. 1 and 2, the switch component is in the disconnected state (initial state).

Therefore, the potentiometer function and the switch function are not influenced mutually, and the control is very convenient.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not to the limitation of the technical solution of the present invention, as long as the technical solution can be realized on the basis of the above-mentioned embodiment without creative work, all should be regarded as falling into the protection scope of the right of the present invention.

Claims (10)

1. A potentiometer with a pressing self-locking switch comprises an outer shell, a potentiometer component and a switch component, wherein the potentiometer component comprises a shaft sleeve and a rotating shaft arranged on the shaft sleeve, the rotating shaft is used for driving an electric brush in the potentiometer component to rotate, the switch component comprises a positioning rod, a sliding block, a knob shaft and a knob handle, a groove is formed in the outer wall of the outer shell, a through hole is formed in the outer shell, a communication channel is formed between the groove and the through hole of the outer shell, a first end of the positioning rod is arranged at one end of the groove of the outer shell and cannot move towards the other end, the positioning rod penetrates through the communication channel of the outer shell, a pressing self-locking groove is formed in the sliding block arranged in the through hole in the rear section of the outer shell, a second end of the positioning rod is arranged in the pressing self-locking groove, and the first, the second end of knob axle with the knob handle is connected its characterized in that: the switch component further comprises a pressure spring, a transmission sleeve, a connecting sleeve and a conductive on-off device, the potentiometer component is arranged at the front part of the outer shell, the sliding block is provided with a through hole in the front-back direction, the transmission sleeve is arranged in the through hole, the sliding block and the transmission sleeve can rotate relatively and cannot move back and forth relatively, the transmission sleeve is provided with a central through hole in the front-back direction, the radial cross section of the central through hole is in a non-regular circular shape, the rotating shaft is arranged in the central through hole of the transmission sleeve, the radial cross section of the rotating shaft is in a non-regular circular shape, the pressure spring is sleeved outside the rotating shaft through the central through hole and is positioned between the front end of the transmission sleeve and the front hole wall of the through hole of the outer shell, the rear section of the transmission sleeve is provided with a radial blind hole, the connecting sleeve is provided with a through hole in the front, the anterior segment of adapter sleeve is equipped with radial through-hole, and the one end of bolt is passed radial through-hole is placed in realize in the radial blind hole the transmission cover with be connected between the adapter sleeve, the first end of knob axle is placed in the back end of adapter sleeve and can not relative rotation and relative movement around and, electrically conductive on-off device installs the slider with between the shell body and can realize the switch function when the slider is in different front and back positions.

2. A potentiometer with push-to-self locking switch according to claim 1, wherein: the conductive on-off device comprises a reed, a multi-finger contact, a contact plate, a first conductive plate, a second conductive plate and a mounting base, wherein the reed is installed on the outer wall of the sliding block, the two multi-finger contacts are respectively installed on the reed and are mutually connected into a U shape, the mounting base is installed on the corresponding inner wall of the shell body, the insulating contact plate is installed on the mounting base and is positioned in the shell body, the contact plate is provided with a longer first conductive belt and a shorter second conductive belt in the front-back direction, the contacts of the two multi-finger contacts are respectively contacted with the first conductive belt and the second conductive belt and can slide back and forth, when the switch component is in an on state, the two multi-finger contacts are respectively contacted with the first conductive belt and the second conductive belt, and when the switch component is in an off state, the multi-finger contacts are correspondingly disconnected with the second conductive belt, the first conducting strip and the second conducting strip are respectively installed in corresponding installation through holes in the shell body, one end of the first conducting strip and one end of the second conducting strip are respectively in conductive connection with the first conducting strip and the second conducting strip, and the other end of the first conducting strip and the other end of the second conducting strip are respectively used as switch lead ends of the switch component.

3. A potentiometer with push-to-self locking switch according to claim 1, wherein: the front end of the transmission sleeve is provided with a convex ring with an increased outer diameter, the front end of the sliding block is provided with a concave ring with a decreased outer diameter, the convex ring is arranged in the concave ring, and the rear end of the sliding block is in surface contact with the front end surface of the connecting sleeve.

4. A potentiometer with push-to-self locking switch according to claim 1, wherein: the radial cross-sectional shapes of the central through hole of the transmission sleeve and the rotating shaft comprise at least one straight edge.

5. A potentiometer with push-to-self locking switch according to claim 1, wherein: the pressure spring is a spiral pressure spring.

6. A potentiometer with push-to-self locking switch according to claim 1, wherein: an insulating washer and a contact washer are arranged between the front end of the transmission sleeve and the rear end of the pressure spring, and the insulating washer is located between the contact washer and the front end of the transmission sleeve.

7. A potentiometer with push-to-self locking switch according to any of claims 1-6, wherein: the potentiometer with the press self-locking switch further comprises a printed circuit board, the printed circuit board is installed on the outer shell, a plurality of printed wiring ends are arranged on the printed circuit board, and the printed wiring ends are respectively connected with the potentiometer lead end of the potentiometer component and the switch lead end of the switch component through printed lines in a corresponding mode.

8. A potentiometer with a push-to-self locking switch according to claim 7, wherein: the printed wiring terminals comprise two switch printed wiring terminals and three potentiometer printed wiring terminals, the two switch printed wiring terminals are respectively and correspondingly connected with the switch lead ends of the switch parts through printed lines, and the three potentiometer printed wiring terminals are respectively and correspondingly connected with the potentiometer lead ends of the potentiometer parts through printed lines.

9. A potentiometer with push-to-self locking switch according to any of claims 1-6, wherein: the rear end of the outer shell is provided with an installation plate, the installation plate is provided with a through hole for the connection sleeve to pass through, the corresponding positions on the installation plate and the outer shell are respectively provided with riveting holes, and a riveting sheet passes through the riveting holes on the installation plate and the outer shell; the mounting plate is also provided with a mounting hole for connecting with external equipment.

10. A potentiometer with push-to-self locking switch according to any of claims 1-6, wherein: the rotary knob is characterized in that a contact surface between the outer wall of the front section close to the first end on the rotary knob shaft and the inner wall of the rear section of the connecting sleeve is at least provided with a plane, an arc-shaped groove is formed in the circumference of the rear section of the connecting sleeve, a radial linear through hole is formed in the wall of the rear section of the connecting sleeve, a radial linear groove is formed in the position, corresponding to the linear through hole, of the outer wall of the front section close to the first end on the rotary knob shaft, the clamp spring is formed by connecting and integrally forming one section of arc-shaped elastic strip and one section of linear strip, the arc-shaped elastic strip of the clamp spring is arranged in the arc-shaped groove, the linear strip of the clamp spring is.

Images