CN211858298U

CN211858298U - Take canned type potentiometre of separation blade

Info

Publication number: CN211858298U
Application number: CN202020683715.2U
Authority: CN
Inventors: 刘晟睿
Original assignee: Favor Electronics Dongguan Co ltd
Current assignee: Favor Electronics Dongguan Co ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-11-03
Anticipated expiration: 2030-04-29

Abstract

The utility model provides a closed potentiometer with a baffle, which comprises a potentiometer, wherein the potentiometer comprises a shell, a shaft sleeve, a shaft core, a resistance module, a rotating disc and a rotating output module; the resistance module comprises an upper baffle and a sheet-shaped torsion spring; the rolling disc is characterized in that a mounting hole is formed in the middle of the rolling disc, the lower end of the shaft core is connected with a mounting portion, a lower padding plate is further arranged at the upper end of the rolling disc, the rolling disc is integrally connected with the lower padding plate, an extending block is connected to the edge of one end of the lower padding plate, and a blocking piece used for limiting the rotating angle of the extending block is connected to the inner wall of the shell. The utility model discloses a canned type potentiometre has increased the resistance module on the axle core, has increaseed rolling disc pivoted moment of torsion, and it is accurate to make the axle core rotate the location when stopping, has guaranteed output signal's accuracy to the rotation angle volume that can control the axle core has improved the precision of potentiometre.

Description

Take canned type potentiometre of separation blade

Technical Field

The utility model relates to a potentiometre technical field, concretely relates to take canned type potentiometre of separation blade.

Background

The potentiometer is one kind of variable resistor, and usually the resistor body of the potentiometer has two fixed ends, and the position of the movable contact on the resistor body is changed by manually adjusting the rotating shaft or the sliding handle, so that the resistance value between the movable contact and any one of the fixed ends is changed, and the voltage and the current are changed. The potentiometer in the prior art has small rotating torque, the shaft core is easy to shake when rotating and stopping, the accuracy of output signals is influenced, and the rotating angle of the shaft core is difficult to control because a positioning block is not arranged inside the potentiometer.

SUMMERY OF THE UTILITY MODEL

To above problem, the utility model provides a take canned type potentiometre of separation blade has increased the resistance module on the axle core, has increaseed rolling disc pivoted moment of torsion, and it is accurate to fix a position when making the axle core rotate to stop, has guaranteed output signal's accuracy to the rotation angle volume that can control the axle core has improved the precision of potentiometre.

In order to achieve the above object, the present invention provides the following technical solutions:

a sealed potentiometer with a blocking piece comprises a potentiometer, wherein the potentiometer comprises a shell, a shaft sleeve arranged at an opening at the upper end of the shell, a shaft core sleeved on the inner side of the shaft sleeve, a resistance module sleeved on the shaft core, a rotating disc connected to the bottom of the shaft core and a rotating output module arranged at an opening at the lower end of the shell;

the resistance module comprises an upper baffle plate and a sheet-shaped torsion spring, the upper baffle plate is sleeved on the outer side of the shaft core, a round hole for the shaft core to pass through is formed in the middle of the upper baffle plate, and an avoidance hole for the shaft core to pass through is formed in the middle of the sheet-shaped torsion spring;

the middle part of the rotating disc is provided with an installation hole, the inner side surface of the installation hole is provided with a plurality of first inner tooth grooves, the lower end of the shaft core is connected with an installation part, the outer side surface of the installation part is provided with a plurality of first outer tooth racks matched with the first inner tooth grooves, the upper end of the rotating disc is also provided with a lower cushion plate, the rotating disc is integrally connected with the lower cushion plate, the edge of one end of the lower cushion plate is connected with an extension block, and the inner wall of the shell is connected with a separation blade for limiting the rotation angle of the extension block;

the rotation output module comprises a sliding resistance sheet fixed at the lower end of the rotating disc, a base fixed on the inner side of the lower end of the shell, a first carbon film, a second carbon film, first conductive pins connected to the lower sides of two ends of the first carbon film and second conductive pins connected to the lower end of the second carbon film, wherein the first carbon film and the second carbon film are arranged on the upper end surface of the base;

the joint of the shaft sleeve and the shell and the joint of the base and the shell are filled with waterproof glue.

Specifically, a plurality of second inner tooth grooves are formed in the inner side of an opening in the upper end of the shell, and a plurality of second outer racks matched with the second inner tooth grooves are arranged on the outer side face of the shaft sleeve.

Specifically, the sliding resistance sheet is provided with a first contact portion and a second contact portion, the first contact portion is in sliding contact with the upper end face of the first carbon film, and the second contact portion is in sliding contact with the upper end face of the second carbon film.

Specifically, the shaft core is further provided with a first annular groove and a second annular groove, and an O-shaped sealing ring is sleeved in the annular grooves.

Specifically, lubricating oil is filled in the gap positions inside the first annular groove and the second annular groove.

The utility model has the advantages that:

first, the potentiometer of the utility model is connected with the installation part at the lower end of the shaft core, the middle part of the upper end of the rotating disc is provided with a second bar-shaped hole for the installation part to insert, the installation part is assembled with the rotating disc in a splicing way, the assembly is easy, and the shaft core can be prevented from deviating after the assembly;

the second, increased the resistance module on the axle core, increaseed rolling disc pivoted moment of torsion, it is accurate to make the axle core rotate the location when stopping, has guaranteed output signal's accuracy to there is the extension piece at backing plate one end edge connection, and shell inner wall is connected with the separation blade that is used for the restriction to extend a turned angle, utilizes stopping limiting displacement of separation blade, can control the turned angle measurement of axle core accurately, has improved the precision of potentiometre.

Drawings

Fig. 1 is a front view of the sealed potentiometer with a blocking piece according to the present invention.

3 fig. 32 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 the 3 plane 3 a 3- 3 a 3 in 3 fig. 31 3. 3

Fig. 3 is a cross-sectional view taken along the plane B-B in fig. 1.

Fig. 4 is an exploded view of the sealed potentiometer with the blocking piece according to the present invention.

Fig. 5 is a schematic structural view of the central spindle, the resistance module, and the rotating disk of the present invention.

The reference signs are: the structure comprises a shell 1, a baffle plate 11, a second inner tooth groove 12, a shaft sleeve 2, a second outer rack 21, a shaft core 3, a mounting part 31, a first annular groove 32, a second annular groove 33, a resistance module 4, an upper baffle plate 41, a sheet-shaped torsion spring 42, a rotating disc 5, a mounting hole 51, a lower gasket plate 52, an extension block 53, a rotating output module 6, a sliding resistance sheet 61, a first contact part 611, a second contact part 612, a base 62, a first carbon film 63, a second carbon film 64, a first conductive pin 65, a second conductive pin 66 and an O-shaped sealing ring 7.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.

Referring to FIGS. 1-5:

the utility model provides a take canned type potentiometre of separation blade, includes the potentiometre, and the potentiometre includes shell 1, set up at 1 upper end open-ended axle sleeve 2 of shell, the cover establish at 2 inboard axle cores 3 of axle sleeve, the cover establish resistance module 4 on axle core 3, connect at the rolling disc 5 of 3 bottoms of axle core, set up at 1 lower extreme open-ended rotation output module 6 of shell.

The resistance module 4 comprises an upper baffle 41 sleeved outside the shaft core 3 and a sheet torsion spring 42, wherein the middle part of the upper baffle 41 is provided with a round hole for the shaft core 3 to pass through, the middle part of the sheet torsion spring 42 is provided with an avoidance hole for the shaft core 3 to pass through, the shaft core 3 can drive the rotating disc 5 to rotate along the direction of the shaft core 3 when rotating, and the sheet torsion spring 42 is clamped between the upper baffle 41 and the rotating disc 5, so that the rotating disc 5 has certain rotating resistance when rotating under the elastic action of the sheet torsion spring 42, namely, the rotating torque of the shaft core 3 is increased, the shaft core 3 is accurately positioned when stopping rotating, the accuracy of an output signal is ensured, in addition, the sheet torsion spring 42 has certain elasticity along the direction of the shaft core 3 due to the structural particularity of the sheet torsion spring 42, and therefore, the compression resistance buffering capacity of the shaft core 3 can be improved.

5 middle parts of rolling disc are equipped with a mounting hole 51, the mounting hole 51 medial surface is equipped with a plurality of first interior tooth's socket, 3 lower extremes of axle core are connected with installation department 31, installation department 31 lateral surface is equipped with a plurality of and first interior tooth's socket matched with first outer rack, 5 upper ends of rolling disc still are equipped with lower bolster 52, rolling disc 5 is connected with lower bolster 52 integration, during preparation rolling disc 5 and lower bolster 52, mode through injection moulding makes rolling disc 5 and lower bolster 52 integrated into one piece, both need not independent injection moulding and equipment, on the one hand, structural stability between them has been improved, on the other hand has promoted machining efficiency, and production cost is reduced.

The edge of one end of the lower backing plate 52 is connected with an extension block 53, the inner wall of the shell 1 is connected with a baffle plate 11 used for limiting the rotation angle of the extension block 53, and when the shaft core 3 and the rotating disc 5 rotate, the rotation angle of the shaft core 3 can be accurately controlled by utilizing the blocking limiting effect of the baffle plate 11 on the extension block 53, so that the positioning accuracy of the potentiometer is improved.

The rotation output module 6 includes a sliding resistance sheet 61 fixed at the lower end of the rotating disk 5, a base 62 fixed at the inner side of the lower end of the housing 1, a first carbon film 63 and a second carbon film 64 provided on the upper end surface of the base 62, a first conductive pin 65 connected to the lower side of the two ends of the first carbon film 63, and a second conductive pin 66 connected to the lower end of the second carbon film 64, the sliding resistance sheet 61 is provided with a first contact portion 611 and a second contact portion 612, the first contact portion 611 is in sliding contact with the upper end surface of the first carbon film 63, the second contact portion 612 is in sliding contact with the upper end surface of the second carbon film 64, the potentiometer of the present embodiment has a current or voltage output principle similar to that of a conventional potentiometer, the sliding resistance sheet 61 is rotated by the rotation of the shaft core 3, the output resistance is changed by changing the contact positions of the first contact portion 611 and the second contact portion 612 on the sliding resistance sheet 61 with the first carbon film 63 and the second carbon film 64, thereby changing the magnitude of the output voltage and current.

In order to improve the tightness between the shaft core 3 and the shell 1 and further improve the overall waterproof performance of the potentiometer, waterproof glue is filled at the joint of the shaft sleeve 2 and the shell 1 and at the joint of the base 62 and the shell 1.

Preferably, for the convenience of assembly and improvement of the degree of adaptability between the housing 1 and the shaft sleeve 2, a plurality of second internal tooth grooves 12 are formed in the inner side of an opening in the upper end of the housing 1, and a plurality of second external racks 21 matched with the second internal tooth grooves 12 are formed in the outer side surface of the shaft sleeve 2.

Preferably, in order to improve the sealing performance between the shaft core 3 and the shaft sleeve 2 and further improve the overall waterproof performance of the potentiometer, the shaft core 3 is further provided with a first annular groove 32 and a second annular groove 33, an O-shaped sealing ring 7 is sleeved in the annular grooves, and the gap positions inside the first annular groove 32 and the second annular groove 33 are further filled with lubricating oil.

The above examples only represent 1 embodiment of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The sealed potentiometer with the blocking piece comprises a potentiometer and is characterized by comprising a shell (1), a shaft sleeve (2) arranged at an opening at the upper end of the shell (1), a shaft core (3) sleeved on the inner side of the shaft sleeve (2), a resistance module (4) sleeved on the shaft core (3), a rotating disc (5) connected to the bottom of the shaft core (3) and a rotation output module (6) arranged at an opening at the lower end of the shell (1);

the resistance module (4) comprises an upper baffle plate (41) and a sheet-shaped torsion spring (42), the upper baffle plate (41) is sleeved on the outer side of the shaft core (3), a round hole for the shaft core (3) to pass through is formed in the middle of the upper baffle plate (41), and an avoiding hole for the shaft core (3) to pass through is formed in the middle of the sheet-shaped torsion spring (42);

the middle of the rotating disc (5) is provided with a mounting hole (51), a plurality of first inner tooth grooves are formed in the inner side face of the mounting hole (51), the lower end of the shaft core (3) is connected with a mounting portion (31), a plurality of first outer racks matched with the first inner tooth grooves are formed in the outer side face of the mounting portion (31), a lower padding plate (52) is further arranged at the upper end of the rotating disc (5), the rotating disc (5) is integrally connected with the lower padding plate (52), an extending block (53) is connected to the edge of one end of the lower padding plate (52), and a blocking piece (11) used for limiting the rotating angle of the extending block (53) is connected to the inner wall of the shell (1);

the rotation output module (6) comprises a sliding resistance sheet (61) fixed at the lower end of the rotating disc (5), a base (62) fixed on the inner side of the lower end of the shell (1), a first carbon film (63) arranged on the upper end surface of the base (62), a second carbon film (64), first conductive pins (65) connected to the lower sides of two ends of the first carbon film (63), and second conductive pins (66) connected to the lower end of the second carbon film (64);

the joint of the shaft sleeve (2) and the shell (1) and the joint of the base (62) and the shell (1) are filled with waterproof glue.

2. The sealed potentiometer with the baffle plate according to claim 1, wherein a plurality of second internal tooth grooves (12) are formed inside the upper opening of the housing (1), and a plurality of second external tooth racks (21) matched with the second internal tooth grooves (12) are formed on the outer side surface of the shaft sleeve (2).

3. The sealed potentiometer with the dummy blade according to claim 1, wherein the sliding resistive sheet (61) is provided with a first contact portion (611) and a second contact portion (612), the first contact portion (611) is in sliding contact with the upper end surface of the first carbon film (63), and the second contact portion (612) is in sliding contact with the upper end surface of the second carbon film (64).

4. The sealed potentiometer with the baffle plate as claimed in claim 1, wherein the shaft core (3) is further provided with a first annular groove (32) and a second annular groove (33), and the annular grooves are internally sleeved with O-shaped sealing rings (7).

5. The sealed potentiometer with the blocking piece as claimed in claim 4, wherein the gap positions inside the first annular groove (32) and the second annular groove (33) are further filled with lubricating oil.