CN213242113U - Small-size potentiometer with pressing self-locking switch - Google Patents

Abstract

The utility model discloses a little volume potentiometer of self-locking switch is pressed in area, including shell body, potentiometre part and switch part, the little volume potentiometer of self-locking switch is pressed in area still includes printed circuit board, printed circuit board installs on the shell body, the last a plurality of printing wiring end that is equipped with of printed circuit board is a plurality of the printing 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. The utility model discloses an increase printed circuit board, show and reduced wire occupation space and finished product volume to the wiring that has avoided the wire welding mode to exist is loaded down with trivial details, easily takes place the misconnection, neglects the electric installation problem such as wiring, is favorable to satisfying equipment miniaturization, standardization and reliability requirement, especially does benefit to the application scene of potentiometre majority volume on the small-size equipment.

Description

Small-size potentiometer with pressing self-locking switch

Technical Field

The utility model relates to a potentiometre of taking the switch in mainly used circuit or equipment especially relates to a small size 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, connecting terminals of a potentiometer component and a switch component adopt a wire welding mode, 5 wires are required to be welded on each potentiometer with a 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 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.

Secondly, 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, so that the technical process quality is difficult to control, 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; meanwhile, in the traditional structure, a screw fastening connection structure is adopted between the metal shaft and the knob, 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 to the equipment in the field is limited.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can reduce occupation space's little volume potentiometer of self-locking switch is pressed in area for solving above-mentioned problem.

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

a small-volume potentiometer with a pressing self-locking switch comprises a 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 arranged on the outer wall of the shell, a through hole is arranged in the shell, a communicating channel is arranged between the groove and the through hole of the shell, a first end of the positioning rod is arranged at one end of the groove of the shell and can not move to the other end, the positioning rod penetrates through the communicating channel of the shell, a pressing self-locking groove is arranged on the sliding block in the through hole at the rear section of the shell, a second end of the positioning rod is arranged in the pressing self-locking groove, and the first end of the knob shaft can push, the second end of knob axle with the knob handle is connected, the small volume potentiometer of self-locking switch is 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 terminal of potentiometre part with the switch lead terminal of switch part corresponds the connection through the printed wiring.

In the structure, 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 and keeps a temporary stable state, after the sliding block is pushed to move forwards in place again and the thrust is released, the sliding block can move backwards under the action of the reset elastic force of the pressure spring and the second end of the positioning rod can be finally positioned in the front part of the pressing self-locking groove, so that the aim of resetting the sliding block after moving backwards in place is fulfilled, the structure of the pressing self-locking groove is a mature structure in the prior art, the application is; the traditional lead welding structure is replaced by the printed wire connecting structure of the printed circuit board, so that the product volume can be reduced as much as possible, and the problems of wrong lead connection, leakage connection and the like of the lead are avoided.

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.

Further, in order to realize the disconnect-type design and the quick assembly and disassembly structure between potentiometre part and the switch block, in order to facilitate the knob axle with inside light derive all the outside and do benefit to discernment and realize the quick positioning connection between knob axle and the adapter sleeve simultaneously, the switch block still includes pressure spring, transmission cover, adapter sleeve and electrically conductive on-off device, establishes the potentiometre part install in the front portion of shell body, the slider is equipped with fore-and-aft direction's through-hole just the transmission cover is installed in this through-hole, the slider with can relative rotation and can not relative back-and-forth movement between the transmission cover, the transmission cover is equipped with fore-and-aft direction's central through-hole and this central through-hole's radial cross-sectional shape is non-orthocircular, the pivot is arranged in the central through-hole of transmission cover and this section shape of pivot is non-orthocircular, the pressure spring through self central through-hole suit in the pivot is The connecting sleeve is provided with a through hole in the front direction, the front section of the connecting sleeve is sleeved outside the rear section of the transmission sleeve, the front section of the connecting sleeve is provided with a radial through hole, one end of a bolt penetrates through the radial through hole and is placed in the radial blind hole to realize the connection between the transmission sleeve and the connecting sleeve, the first end of a knob shaft is placed in the rear section of the connecting sleeve and cannot relatively rotate and move back and forth, and the conductive on-off device is arranged between the sliding block and the outer shell and can realize the switching function when the sliding block is in different front and back positions; 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.

The beneficial effects of the utility model reside in that:

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 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 is not interfered with each other, the defects of the electrical performance and the mechanical performance of the potentiometer part and the switch part 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; simultaneously, through the connection structure design between knob axle and the adapter sleeve 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 thread 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 was located 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 sectional view of a small volume potentiometer with a push 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 small volume potentiometer with the 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 small volume 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 small volume potentiometer with the push self-locking switch according to the present invention, wherein the knob handle and the printed circuit board are partially cut;

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

fig. 9 is a second schematic view of the top view structure of the reed, the multi-finger contact, the contact plate, the first conductive sheet and the second conductive sheet of the small volume 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 pressing self-locking groove 11 is formed in a sliding block 12 arranged in a through hole in the rear section of the outer shell 4, a second end of the positioning rod 6 is arranged in the pressing self-locking groove 11, a first end (namely the front end) of a knob shaft 17 can push the sliding block 12 to move back and forth, a second end (namely the rear end) of the knob shaft 17 is connected with a knob handle 18, the potentiometer with the pressing 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 printed wiring terminals are respectively and correspondingly connected with a potentiometer lead end of the potentiometer component 3 and a switch lead end of the switch component 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 to the switch lead terminals of the switch part through printed lines, and the three potentiometer printed wiring terminals 29 are respectively correspondingly connected to the potentiometer lead terminals of the potentiometer part 3 through printed lines.

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

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 15 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 realize the separated design and the quick assembly and disassembly structure between the potentiometer component 3 and the switch component and simultaneously facilitate the guiding of internal light out through the knob shaft 17 to be beneficial to the identification and realize the quick positioning connection between the knob shaft 17 and the connecting sleeve 15, the switch component also comprises a pressure spring 8, a transmission sleeve 13, the 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 can not move back and forth relatively, the transmission sleeve 13 is provided with a central through hole 20 in the front-back direction, the radial 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 section of the rotating shaft 9 is in a non-regular circular shape, the pressure spring 8 is sleeved outside the rotating shaft 9 and is positioned between the front end, the rear section of the transmission sleeve 13 is provided with a radial blind hole, the connecting sleeve 15 is provided with a through hole in the front-back direction, the front section of the connecting sleeve 15 is sleeved outside the rear section of the transmission sleeve 13, the front section of the connecting sleeve 15 is provided with a radial through hole, one end of the plug pin 14 penetrates through the radial through hole and is arranged in the radial blind hole to realize the connection between the transmission sleeve 13 and the connecting sleeve 15, the first end of the knob shaft 17 is arranged in the rear section of the connecting sleeve 15 and cannot relatively rotate and move back and forth, and the conductive on-off device is arranged between the sliding block 12 and the outer shell 4 and can realize the switching function when the sliding block; the contact surface between the outer wall of the front section close to the first end on the knob shaft 17 and the inner wall of the rear section of the connecting sleeve 15 is at least provided with a plane, the circumference of the rear section of the connecting sleeve 15 is provided with an arc-shaped groove 31, the wall of the rear section of the connecting sleeve 15 is provided with a radial linear through hole 32, the outer wall of the front section close to the first end on the knob shaft 17 is provided with a radial linear groove (not marked in the figure) corresponding to the linear through hole 32, the clamp spring 16 is formed by mutually connecting and integrally molding a section of arc-shaped elastic strip and a section of linear strip, the arc-shaped elastic strip of the clamp spring 16 is arranged in the arc-shaped groove 31, the linear strip of the clamp spring 16 is simultaneously arranged in the linear through hole 32 and;

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 a better insulating 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.

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 (4)

1. A small-volume potentiometer with a pressing self-locking switch comprises a 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 arranged on the outer wall of the shell, a through hole is arranged in the shell, a communicating channel is arranged between the groove and the through hole of the shell, a first end of the positioning rod is arranged at one end of the groove of the shell and can not move to the other end, the positioning rod penetrates through the communicating channel of the shell, a pressing self-locking groove is arranged on the sliding block in the through hole at the rear section of the shell, a second end of the positioning rod is arranged in the pressing self-locking groove, and the first end of the knob shaft can push, the second end of knob axle with the knob handle is connected its characterized in that: the small-size 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 terminals are arranged on the printed circuit board and 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.

2. The small volume potentiometer with push self-locking switch according to claim 1, 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.

3. A small volume potentiometer with push self-locking switch according to claim 1 or 2, 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.

4. A small volume potentiometer with push self-locking switch according to claim 1 or 2, wherein: 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 front section of the connecting sleeve is provided with a radial through hole, one end of a plug pin penetrates through the radial through hole and is arranged in the radial blind hole to realize the connection between the transmission sleeve and the connecting sleeve, the first end of the knob shaft is arranged in the rear section of the connecting sleeve and cannot relatively rotate and relatively move back and forth, and the conductive on-off device is arranged between the sliding block and the outer shell and can realize the switching function when the sliding block is at different front and back positions; 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.

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