Switch-equipped Sealed Potentiometer and Its Assembly Method

Abstract

A switch-sealed potentiometer includes a bushing, a connection base, a switch base, a resistor body, a rotation and sliding system, and a switch assembly. The rotation and sliding system includes a base body provided with a rotating shaft and a movable brush mounted on the base body. The switch assembly includes a switch driving body and a switch fixed and movable contact piece assembly. The connection base is connected to the bushing and constructs a first closed chamber. The resistor body, rotation and sliding system are disposed in the first closed chamber, and one end of the rotating shaft extends out of the bushing for rotational operation. The connection base is also connected to the switch base and constructs a second closed chamber. The switch assembly is disposed in the second closed chamber, and the other end of the rotating shaft passes through the connection base and enters the second closed chamber to be fitted with the switch driving body. On this basis, a method for assembling the potentiometer is also proposed. The potentiometer is provided with two closed chambers, and each component can be disposed in a separate chamber, avoiding excessive components being assembled on the same carrier component. The overall structure is simple, the installation space is sufficient, the inner cavity of the closed chamber is closed, and the sealing effect is good.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic components, and particularly relates to a switch-equipped sealed potentiometer and an assembly method thereof. Background Art

[0002] A switch-equipped potentiometer is an adjustable electronic component. As the name implies, it is a potentiometer product with a switch function, and it has pins for the switch function in addition to those of an ordinary potentiometer.

[0003] For example, in the "Potentiometer" with the authorization announcement number CN 214428413 U, it includes a knob housing, a base, and a pedestal. The center of the base is provided with a shaft core. One end of the shaft core is detachably connected to the knob housing, and the other end of the shaft core is detachably connected to the pedestal. Although this type of potentiometer can achieve the detachable connection of the knob housing, the base, and the pedestal through the shaft core, it still has the following deficiencies:

[0004] First, the structure of the pedestal is complex because all components such as the wiring piece, the moving contact piece, the static contact piece, the contact point, and the switch part composed of the cam, the moving and static contact pieces, and the contact point are all centrally arranged on the pedestal. Therefore, the pedestal needs to be provided with corresponding assembly structures to realize the assembly of the above components, resulting in a complex and less concise pedestal structure and an increased processing difficulty.

[0005] Second, after the above components are assembled, on the one hand, it is necessary to ensure normal operation, and on the other hand, it is necessary to consider that there should be no interference between them. Therefore, the installation positions and dimensions of the above components on the pedestal are still restricted.

[0006] Third, after the pedestal is assembled with the above components, it forms an exposed state, and the components are not effectively protected. Moreover, for special occasions such as waterproof, moisture-proof, or dust-proof, this type of potentiometer cannot meet the usage requirements.

[0007] Fourth, the assembly of the above components, combined with the complex structure of the pedestal and other carrier components themselves, increases the complexity and difficulty of the assembly.

[0008] Therefore, how to design a switch-equipped potentiometer to avoid the many deficiencies brought about by the assembly of too many components on a single carrier component is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0009] To solve the above technical problems, the present invention proposes a switch-equipped sealed potentiometer with a new structure and an assembly method for this potentiometer.

[0010] As a first aspect, the present invention provides a switch-sealed potentiometer, comprising a bushing, a connection seat, a switch seat, a resistor body, a rotation and sliding system, and a switch assembly. The rotation and sliding system includes a base body provided with a rotating shaft and a movable brush mounted on the base body. The switch assembly includes a switch driving body and a switch fixed and movable contact piece assembly.

[0011] On one hand, the connection seat is connected to the bushing and constructs a first closed chamber. The resistor body and the rotation and sliding system are disposed in the first closed chamber. One end of the rotating shaft extends out of the bushing for rotational operation to drive the movable brush to slide on the resistor body.

[0012] On the other hand, the connection seat is connected to the switch seat and constructs a second closed chamber. The switch assembly is disposed in the second closed chamber. The other end of the rotating shaft passes through the connection seat and enters the second closed chamber to be fitted with the switch driving body. Further, under the drive of the rotating shaft, the switch driving body drives the switch fixed and movable contact piece assembly to act to achieve opening or closing.

[0013] Preferably, the bushing has an end portion, the connection seat has a connection seat body, and at least one of the end portion and the connection seat body is provided with a wall surrounding it. The end portion, the wall, and the connection seat body jointly construct the first closed chamber.

[0014] Preferably, the switch seat has an end portion, the connection seat has a connection seat body, and at least one of the end portion and the connection seat body is provided with a wall surrounding it. The end portion, the wall, and the connection seat body jointly construct the second closed chamber.

[0015] Preferably, the bushing is provided with a first wall surrounding the edge of its end portion, and the connection seat is provided with a second wall surrounding the edge of its connection seat body. The first wall and the second wall are connected. Thus, the end portion of the bushing, the first wall, the second wall, and the connection seat body jointly enclose the first closed chamber.

[0016] Preferably, the switch seat is provided with a third wall surrounding the edge of its end portion, and the third wall is connected to the connection seat body. Thus, the connection seat body, the third wall, and the end portion of the switch seat jointly enclose the second closed chamber.

[0017] Preferably, the resistor body is disposed on at least one of the inner end wall of the end portion of the bushing and the inner end wall of the connection seat body opposite to the end portion of the bushing, and the movable brush is correspondingly disposed with the resistor body.

[0018] Preferably, when the inner end wall of the end portion of the bushing is provided with the resistor body, a lead-out end extends out of the bushing.

[0019] Preferably, when the inner end wall of the connection seat body opposite to the end portion of the bushing is provided with the resistor body, a lead-out end extends out of the connection seat.

[0020] Preferably, when a resistor body is provided on the inner end wall of the end portion of the bushing, the bushing extends radially outward to lead out terminals.

[0021] Preferably, when a resistor body is provided on the inner end wall of the connecting seat body opposite to the end portion of the bushing, the connecting seat extends radially outward to lead out terminals.

[0022] Preferably, the switch movable and stationary contact piece assembly includes a movable contact piece part and a stationary contact piece part. The switch base is provided with a first mounting assembly for mounting the movable contact piece part, and the switch base is also provided with a second mounting assembly for mounting the stationary contact piece part.

[0023] Preferably, the first mounting assembly and the second mounting assembly are close to the third wall body of the switch base and are arranged at the end of the switch base.

[0024] Preferably, the first mounting assembly and the second mounting assembly are also tightly connected to the third wall body.

[0025] Preferably, the movable contact piece part includes a movable contact piece. The first mounting assembly includes a first mounting seat arranged in cooperation. One end of the movable contact piece is clamped between the first mounting seats. The other end of the movable contact piece is provided with a movable contact point. The second mounting assembly includes a second mounting seat arranged in cooperation. The stationary contact piece of the stationary contact piece part is clamped between the second mounting seats. The stationary contact piece is provided with a stationary contact point. The movable contact point and the stationary contact point are arranged corresponding to each other. A thrust receiving portion for the switch driving body to abut against to separate the movable contact point from the stationary contact point is provided on the movable contact piece. The switch driving body is provided with a thrust portion matched with the thrust receiving portion.

[0026] Preferably, the bushing, the connecting seat, and the switch base are injection molded parts.

[0027] Preferably, the first wall body and the second wall body are connected by ultrasonic welding, and the third wall body and the connecting seat body are connected by ultrasonic welding.

[0028] Preferably, a plurality of riveting posts extending axially and arranged at intervals circumferentially are provided at both the front and back ends of the connecting seat. Corresponding riveting holes are provided on the bushing and the switch base. Thus, the bushing, the connecting seat, and the switch base are connected by riveting.

[0029] The switch-sealed potentiometer proposed by the present invention is provided with a bushing, a connection seat and a switch seat. The three are jointly arranged and connected to form two closed chambers, so as to separately arrange the switch assembly, the rotation and sliding system, and the resistor body in different chambers, avoiding the centralized arrangement of multiple components on a single carrier component, and also making the arrangement of each component not have to be too close. The setting of the two closed chambers provides sufficient arrangement space, and effectively alleviates the limitation degree of the arrangement position and size of each component during the arrangement process; while the switch-sealed potentiometer formed by the two closed chambers forms an internal closed space, which protects the internal components and avoids unnecessary exposure. It can not only meet the conventional use requirements, but also be used in special use occasions such as waterproof, moisture-proof and dust-proof; the present invention forms partitioned closed chambers, and each component can be arranged in the corresponding closed chamber according to requirements. The number of components arranged on the corresponding mounting carrier component in each closed chamber is reduced, the structure of the mounting carrier component is simplified, and the processing and manufacturing difficulty is effectively reduced.

[0030] Obviously, through the cooperative setting and sealed connection of the bushing, the connection seat and the switch seat, the present invention forms partitioned closed chambers, and synchronously solves various deficiencies caused by the assembly of many components on a single carrier component.

[0031] As a second aspect, the present invention proposes an assembly method for assembling a switch-sealed potentiometer, which mainly includes the following steps:

[0032] Step 1, prepare components

[0033] Provide a base body and a rotating shaft, and the rotating shaft is installed on the base body or integrally injection-molded with the base body;

[0034] Provide an injection-molded bushing, which has at least one end, and a rotating shaft through hole is provided at this end;

[0035] Provide an injection-molded connection seat, which has at least one connection seat body, and a rotating shaft through hole is provided on the connection seat body;

[0036] Provide an injection-molded switch seat, which has at least one end;

[0037] Provide a resistor body, which is made on the inner end wall of the end of the bushing when the bushing is injection-molded or on the end wall of the connection seat body when the connection seat is injection-molded;

[0038] Provide a switch assembly, which includes a switch driving body and a switch moving and static contact piece assembly;

[0039] Provide a movable brush;

[0040] Step 2, assemble components

[0041] Assemble the movable brush and the base body. Install the movable brush on the corresponding end wall of the base body according to the set position of the resistor body so that the movable brush can slide on the base body. Thus, the rotating shaft, the base body, and the movable brush are assembled into a rotating and sliding system;

[0042] Assemble the rotating and sliding system and the bushing. Install the rotating shaft in the rotating shaft through hole, and the control end of the rotating shaft extends out of the end of the bushing for rotation operation;

[0043] Assemble the connecting seat and the bushing. During injection molding, at least one of the end of the bushing and the connecting seat body is integrally injection molded with a wall surrounding it, so that after the connecting seat and the bushing are connected, they jointly construct a first closed chamber, and the rotating and sliding system and the resistor body are arranged in the first closed chamber, and the inner end of the rotating shaft passes through the rotating shaft through hole of the connecting seat body;

[0044] Assemble the switch seat and the connecting seat. Install the switch driving body at the inner end of the rotating shaft. During injection molding, at least one of the end of the switch seat and the connecting seat body is integrally injection molded with a wall surrounding it, so that after the switch seat and the connecting seat are connected, they jointly construct a second closed chamber, and the switch combination is arranged in the second closed chamber, so that the inner end of the rotating shaft equipped with the switch driving body is located in the second closed chamber, and the switch driving body is correspondingly arranged with the switch moving and static contact piece assembly to realize the driving of the opening and closing of the switch moving and static contact piece assembly.

[0045] Preferably, in step one, when the resistor body is made on the inner end wall of the end of the bushing during the injection molding of the bushing, the bushing is also integrally made with a radially extending lead-out end that is arranged with the resistor body during the injection molding of the bushing.

[0046] Preferably, when the resistor body is made on the end wall of the connecting seat body during the injection molding of the connecting seat, the connecting seat is also integrally made with a radially extending lead-out end that is arranged with the resistor body during the injection molding of the connecting seat.

[0047] Preferably, in step one, a switch pin through hole is provided at the end of the switch seat; in step one, the switch moving and static contact piece assembly includes a moving contact and a static contact, and the moving contact and the static contact are respectively integrally formed with switch pins; in step two, the switch pins are inserted into the switch pin through holes and extend out of the end of the switch seat.

[0048] Preferably, in step one, the switch seat is integrally made with switch pins that radially extend out of the switch seat during the injection molding; in step two, the switch moving and static contact piece assembly includes a moving contact and a static contact, and the moving contact and the static contact are respectively connected to the inner ends of the corresponding switch pins.

[0049] Compared with the prior art, during the assembly of the present invention, since the bushing, the connection base, and the switch base are all injection-molded, and during the injection molding, some components are also formed integrally with them during the injection, the assembly of the component and the carrier component is simplified. After injection molding, since the three form a closed chamber for separately arranging components after connection, the number of components arranged in each closed chamber is small, and the limitation degree of the component size and the arrangement position is reduced. During assembly, the assembly difficulty is greatly reduced, the assembly efficiency is improved, and the assembled product not only has a simple internal structure, but also forms a closed chamber as a whole, preventing the components arranged therein from being exposed, providing good protection for the components, and also having functions such as waterproof, moisture-proof, and dust-proof as a whole, which is very suitable for use in some special occasions with strict requirements for waterproof, dust-proof, and moisture-proof, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 FIG. 6 is a three-dimensional structural schematic diagram of a switch-sealed potentiometer provided in the first specific embodiment of the present invention;

[0051] Figure 2 FIG. 10 is an exploded structural schematic diagram between the bushing and the rotation and sliding system provided in the first specific embodiment of the present invention;

[0052] Figure 3 FIG. 14 is a three-dimensional structural schematic diagram of the connection base provided in the first specific embodiment of the present invention.

[0053] Figure 4 FIG. 18 is a three-dimensional structural schematic diagram of the switch base equipped with a switch assembly provided in the first specific embodiment of the present invention.

[0054] Figure 5 FIG. 22 is an exploded structural schematic diagram between the bushing and the rotation and sliding system provided in the second specific embodiment of the present invention.

[0055] Figure 6 FIG. 26 is an exploded structural schematic diagram between the bushing, the connection base, and the switch base provided in the third specific embodiment of the present invention.

[0056] Figure 7 FIG. 30 is a three-dimensional structural schematic diagram of the switch base equipped with a switch assembly provided in the fourth specific embodiment of the present invention.

[0057] 1 bushing, 2 connection base, 3 switch base, 4 resistor body, 5 base body, 6 rotating shaft, 7 movable brush, 8 lead-out terminal, 9 limit stop, 10 cam, 11 moving contact piece, 12 static contact piece, 13 switch pin;

[0058] 101 first end portion, 102 first wall body, 103 extension end sleeve;

[0059] 201 connection base body, 202 second wall body, 203 riveting post;

[0060] 301 Second end portion, 302 Third wall, 303 First mounting seat, 304 Second mounting seat, 305 Positioning bump. Detailed implementation mode

[0061] The following will clearly describe the technical solutions in the specific embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of this application, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the inspiration of the following embodiments belong to the scope of protection of the present invention.

[0062] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of this application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means that the related objects before and after are in an "or" relationship.

[0063] Embodiment 1

[0064] As Figures 1 to 4 shown, the switch-sealed potentiometer of the present invention includes a bushing 1, a connecting seat 2, a switch seat 3, a resistor body 4, a switch assembly, and a rotating and sliding system. Among them: the resistor body is preferably a commonly used carbon film resistor sheet; the switch assembly includes a switch driving body and a switch moving and static contact piece assembly; the rotating and sliding system includes a base 5, a rotating shaft 6 basically vertically arranged on the base 5, and a movable brush 7 installed on the base 5. The base 5 and the rotating shaft 6 are preferably integrally injection-molded, and a positioning post (not marked) for fitting the movable brush 7 is also injection-molded on the base 5. The movable brush 5 is preferably an elastic contact spring piece, and is provided with a contact convex part (not marked) to slide on the carbon film resistor sheet.

[0065] The above bushing 1 is an injection-molded part and is directly integrally injection-molded. It mainly includes an end portion and a wall, defined here as the first end portion 101 and the first wall 102. The first wall 102 is basically formed by surrounding the edge of the first end portion 101, so that the overall internal space is large. The first end portion 101 is also integrally injection-molded with a rotating shaft through-hole (not marked) basically located at the center, and an outwardly protruding external threaded hole sleeve (not marked) is provided along the hole edge at the outer end of the first end portion 10.

[0066] The above-mentioned connecting base 2 is also an injection-molded part, which is directly integrally formed by injection molding. It mainly includes a connecting base body 201 and a wall, defined here as the second wall 202. The second wall 202 is basically arranged along the edge of the connecting base body 201, so the internal space is relatively large. A rotation shaft mounting hole (not marked) which is basically located at the center is also integrally injection-molded on the connecting base body 201. The above-mentioned carbon film resistor chip is fabricated on the end wall of the connecting base body 201 when the connecting base 2 is injection-molded. At the same time, when the connecting base 2 is injection-molded, an outwardly extending lead-out end 8 which is arranged in cooperation with the carbon film resistor chip is also fabricated together.

[0067] Refer to the attached Figure 2 and Figure 3 In the up-and-down orientation shown in the figure, when the rotation shaft 6 is installed in the rotation shaft mounting hole of the shaft sleeve 1, the control end of the rotation shaft 6, that is, the outer end extends out of the external thread hole sleeve. At this time, the movable electric brush 5 is installed on the lower end wall of the base body 5, and the above-mentioned carbon film resistor chip is arranged on the upper end wall of the connecting base body 201. At this time, operating the control end of the rotation shaft 6 to rotate drives the movable electric brush 5 to move, and the contact protrusion of the movable electric brush 5 slides along the carbon film resistor chip. Of course, limit stoppers 9 which are matched with each other are arranged at the rotation shaft mounting hole of the rotation shaft 6 and the connecting base body 201 to prevent the excessive rotation of the rotation shaft 6, aiming to ensure that the contact protrusion of the movable electric brush 5 always slides on the carbon film resistor chip and does not slide out of the carbon film resistor chip.

[0068] The whole switch base 3 is also an injection-molded part, which is directly integrally formed by injection molding. It mainly includes an end part and a wall, defined here as the second end part 301 and the third wall 302. The third wall 302 is basically arranged along the edge of the second end part 301, and the overall internal space is relatively large. When injection-molded, the switch base 3 also integrally forms a switch pin through hole (not marked), as well as a first mounting seat 303 and a second mounting seat 304. The first mounting seat 303 and the second mounting seat 304 are both composed of two paired seat bodies. The bottom of each seat body is connected to the second end part 301, and then the side part is connected to the third wall 302. It can be seen that each seat body is arranged as close as possible to the third wall 302 to leave enough installation space for the switch assembly.

[0069] The switch driving body of the switch combination is actually a cam 10 fitted at the inner end of the rotating shaft 6, and the cam 10 is provided with a pushing portion (not marked). The switch moving and static contact piece assembly includes a moving contact piece 11 and a static contact piece 12, and the moving contact piece 11 and the static contact piece 12 are substantially bent at a right angle. The short straight side and the bent portion of the moving contact piece 11 are clamped between the two seat bodies of the first mounting seat 303, and the bottom of the short straight side extends downward and is inserted into the switch pin through hole and extends out of the second end portion 301 to form a switch pin 13. A moving contact point (not marked) is provided at the end of the long straight side of the moving contact piece 11, and a bent bearing and pushing portion (not marked) is provided at approximately the middle position of the long straight side of the moving contact piece 11. One straight side and the bent portion of the static contact piece 12 are clamped between the two seat bodies of the second mounting seat 304, and the other straight side leans against the end of one of the seat bodies, and a static contact point is provided on this straight side. Thus, as the rotating shaft 6 rotates, the pushing portion of the cam 10 pushes the bearing and pushing portion of the moving contact piece 11, so that the moving contact point separates from the static contact point. And the straight side of the static contact piece 12 that is clamped continues to extend downward and is inserted into the switch pin through hole and extends out of the second end portion 301, and also forms a switch pin 13. It can be seen that one of the two switch pins 13 is the switch pin formed by the moving contact piece 11, and the other is the switch pin formed by the static contact piece 12.

[0070] During assembly, first install the movable brush 7 on the lower end wall of the base body 5, and then install the rotating shaft 6 in the rotating shaft through hole of the shaft sleeve 1, and make the control end of the rotating shaft 6 extend out of the external thread hole sleeve, thus completing the assembly of the rotation and sliding system and the shaft sleeve 1. Of course, in order to form a sealed assembly between the rotating shaft and the shaft sleeve, a sealing ring is provided between the shaft sleeve 1 and the rotating shaft 6 to achieve a sealing effect.

[0071] Next, assemble the connecting seat 2 and the shaft sleeve 1. Insert the lower end, that is, the inner end, of the rotating shaft 6 into the rotating shaft through hole of the connecting seat body 201. During the insertion process, the first wall body 102 and the second wall body 202 are gradually aligned and sleeved with each other. Of course, in order to form a sealed connection, the first wall body 102 is provided with an extended end sleeve 103 that slightly indents into the shaft sleeve 1 to fit against the inner wall of the second wall body 202, and at the same time, ultrasonic welding is used for connection and fixation at this place. Thus, after the shaft sleeve 1 and the connecting seat 2 are assembled and connected, a closed chamber is formed, which is defined as the first closed chamber (not marked) here, and is used to arrange components such as the resistor body, the base body, the rotating shaft, the movable brush, the lead-out end, the sealing ring, etc. Thus, rotate the control end of the rotating shaft, and the rotating shaft drives the movable brush on the base body to slide along the resistor body. Thus, the assembly of the shaft sleeve and the connecting seat is completed.

[0072] Finally, assemble and connect the connection seat 2 and the switch seat 3. Before assembly, first install the switch driving body, that is, the cam 10, at the end of the rotating shaft 6, that is, the inner end of the rotating shaft extending from the end of the connection seat body 201. Subsequently, butt-connect the third wall body 302 to the connection seat body 201. Of course, to achieve the butt-connection between the two, a positioning convex block 305 is provided at the end of the third wall body 302, and a matching positioning groove (not marked and shown) is provided at the end of the connection seat body 201 to achieve the positioning butt-connection between the two. A closed chamber is formed between the connection seat 2 and the switch seat 3 after the butt-connection, which is defined here as the second closed chamber (not marked), thereby to accommodate components such as the switch assembly and the inner end of the rotating shaft. Here, the connection seat 2 and the switch seat 3 are also ultrasonically welded to form a closed chamber.

[0073] It should be noted that after the preliminary butt-connection of the bushing, the connection seat, and the switch seat, ultrasonic welding connection can be carried out as a whole. In this way, the overall ultrasonic welding connection is fast and efficient.

[0074] The switch-sealed potentiometer of the present invention has two closed chambers inside, which can accommodate corresponding components respectively, avoiding the multi-component integrated configuration on a single carrier component. The overall internal and external structures are simple, reducing the processing difficulty of the components, improving the assembly convenience, and forming an internal setting after the configuration, avoiding external leakage, protecting the components, and having a closed and sealed effect, which can meet the use in special environments such as waterproof, dustproof, and moisture-proof.

[0075] Embodiment 2

[0076] Refer to the appendix Figure 5 , in this embodiment, different from Embodiment 1, the resistor body 4 is arranged on the inner end wall of the first end 101 of the bushing 1. At this time, the movable brush 7 is assembled on the upper end wall of the base body 5. At this time, the lead-out end 8 is arranged on the bushing 1 and radially extends out of the bushing 1.

[0077] Embodiment 3

[0078] Refer to the appendix Figure 6 , in this embodiment, different from Embodiment 1, the bushing 1, the connection seat 2, and the switch seat 3 are connected by riveting. At this time, a plurality of riveting columns 203 extending axially and arranged at intervals circumferentially are provided at both the front and back ends of the connection seat 2, and corresponding riveting holes (not marked and shown) are provided on the bushing 1 and the switch seat 3. Thus, the bushing 1, the connection seat 2, and the switch seat 3 are connected by riveting. The riveting columns 203 can preferably be directly injection-molded together with the connection seat 2.

[0079] Embodiment 4

[0080] Refer to the appendix Figure 7In this embodiment, different from the first embodiment, the switch pin 13 extends laterally from the switch base 3. At this time, the switch base 3 is molded together with the switch pin 13 extending radially from the switch base 3 during injection molding, and the moving contact piece 11 and the stationary contact piece 12 are respectively connected to the inner ends of the corresponding switch pins 13. At this time, the moving contact piece 11 and the stationary contact piece 12 no longer extend the switch pin 13 downward. In this way, for some special installation occasions, such as when the lateral or horizontal space is relatively abundant, but the longitudinal or vertical space is tight, the radially extending switch pin 13 is particularly suitable.

[0081] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A switch-equipped sealed potentiometer, characterized in that: it includes a bushing, a connection seat, a switch seat, a resistor body, a rotation and sliding system, and a switch assembly. The rotation and sliding system includes a base body provided with a rotating shaft and a movable brush installed on the base body. The switch assembly includes a switch driving body and a switch fixed and movable contact piece assembly; the base body and the rotating shaft are integrally formed; the connection seat is integrally formed. On the one hand, the connection seat is connected to the bushing and constructs a first closed chamber. The resistor body and the rotation and sliding system are arranged in the first closed chamber. One end of the rotating shaft extends out of the bushing for rotational operation to drive the movable brush to slide on the resistor body; On the other hand, the connection seat is connected to the switch seat and constructs a second closed chamber. The switch assembly is arranged in the second closed chamber. The other end of the rotating shaft passes through the connection seat and enters the second closed chamber to be fitted with the switch driving body, and then drives the switch fixed and movable contact piece assembly to act under the drive of the rotating shaft to realize opening or closing.

2. The switch-equipped sealed potentiometer according to claim 1, characterized in that, the bushing has an end portion, the connection seat has a connection seat body, and at least one of the end portion and the connection seat body is provided with a wall surrounding it. The end portion, the wall, and the connection seat body jointly construct the first closed chamber; the switch seat has an end portion, the connection seat has a connection seat body, and at least one of the end portion and the connection seat body is provided with a wall surrounding it. The end portion, the wall, and the connection seat body jointly construct the second closed chamber.

3. The switch-equipped sealed potentiometer according to claim 2, characterized in that, the bushing is provided with a first wall surrounding the edge of its end portion, and the connection seat is provided with a second wall surrounding the edge of its connection seat body. The first wall and the second wall are connected. Thus, the end portion of the bushing, the first wall, the second wall, and the connection seat body jointly surround the first closed chamber; the switch seat is provided with a third wall surrounding the edge of its end portion, and the third wall is connected to the connection seat body. Thus, the connection seat body, the third wall, and the end portion of the switch seat jointly surround the second closed chamber.

4. The switch-equipped sealed potentiometer according to claim 2, characterized in that, the resistor body is provided on at least one of the inner end wall of the end portion of the bushing and the inner end wall of the connection seat body opposite to the end portion of the bushing, and the movable brush is correspondingly arranged with the resistor body; when the resistor body is provided on the inner end wall of the end portion of the bushing, a lead-out end extends out of the bushing; when the resistor body is provided on the inner end wall of the connection seat body opposite to the end portion of the bushing, a lead-out end extends out of the connection seat.

5. The switch-equipped sealed potentiometer according to claim 4, characterized in that, when the resistor body is provided on the inner end wall of the end portion of the bushing, the bushing extends out a lead-out end radially.

6. The switch-equipped sealed potentiometer according to claim 4, characterized in that, when the resistor body is provided on the inner end wall of the connection seat body opposite to the end portion of the bushing, the connection seat extends out a lead-out end radially.

7. The switch-equipped sealed potentiometer according to claim 3, characterized in that, The switch movable and static contact piece assembly includes a movable contact piece part and a static contact piece part. The switch base is provided with a first mounting assembly for fitting the movable contact piece part, and the switch base is also provided with a second mounting assembly for fitting the static contact piece part.

8. The switch-sealed potentiometer according to claim 7, wherein, the first mounting assembly and the second mounting assembly are close to the third wall body of the switch base and are arranged at the end of the switch base.

9. The switch-sealed potentiometer according to claim 8, wherein, the first mounting assembly and the second mounting assembly are also tightly connected to the third wall body.

10. The switch-sealed potentiometer according to claim 7, wherein, the movable contact piece part includes a movable contact piece. The first mounting assembly includes a first mounting seat arranged in cooperation. One end of the movable contact piece is clamped between the first mounting seats. The other end of the movable contact piece is provided with a movable contact point. The second mounting assembly includes a second mounting seat arranged in cooperation. The static contact piece of the static contact piece part is clamped between the second mounting seats. The static contact piece is provided with a static contact point. The movable contact point and the static contact point are arranged correspondingly. A thrust receiving portion is provided on the movable contact piece for the switch driving body to abut and push to separate the movable contact point from the static contact point. The switch driving body is provided with a thrust portion mating with the thrust receiving portion.

11. The switch-sealed potentiometer according to claim 3, wherein, the bushing, the connection seat, and the switch base are injection molded parts.

12. The switch-sealed potentiometer according to claim 11, wherein, the first wall body and the second wall body are connected by ultrasonic welding, and the third wall body and the connection seat body are connected by ultrasonic welding.

13. The switch-sealed potentiometer according to claim 11, wherein, a plurality of riveting posts extending axially and arranged at intervals circumferentially are provided at both the front and back ends of the connection seat. Corresponding riveting holes are provided on the bushing and the switch base. Thus, the bushing, the connection seat, and the switch base are connected by riveting.

14. An assembling method, wherein, for assembling a switch-sealed potentiometer, mainly includes the following steps: Step 1, prepare components Provide a base body and a rotating shaft, and the rotating shaft is installed on the base body or integrally injection molded with the base body; Provide an injection molded bushing, and the bushing has at least one end portion provided with a rotating shaft through hole; Provide an injection molded connection seat, and the connection seat has at least one connection seat body provided with a rotating shaft through hole; Provide an injection molded switch base, and the switch base has at least one end portion; Provide a resistor body, and the resistor body is made on the inner end wall of the end portion of the bushing when the bushing is injection molded or on the end wall of the connection seat body when the connection seat is injection molded; Provide a switch combination body, and the switch combination body includes a switch driving body and a switch movable and static contact piece assembly; Provide a movable brush; Step 2, assemble components Assemble the movable brush and the base body, and install the movable brush on the corresponding end wall of the base body according to the setting position of the resistor body so that the movable brush can slide on the resistor body. Thus, the rotating shaft, the base body, and the movable brush are assembled into a rotating and sliding system; Assemble the rotation and sliding system and the bushing, install the rotating shaft in the through-hole of the rotating shaft, and the control end of the rotating shaft extends out of the end of the bushing for rotation operation; Assemble the connecting seat and the bushing. During injection molding, at least one of the end of the bushing and the connecting seat body is integrally injection molded with a wall surrounding it, so that after the connecting seat and the bushing are connected, they jointly construct a first closed chamber, and the rotation and sliding system and the resistor body are arranged in the first closed chamber, and the inner end of the rotating shaft passes through the through-hole of the connecting seat body; Assemble the switch seat and the connecting seat, install the switch driving body at the inner end of the rotating shaft. During injection molding, at least one of the end of the switch seat and the connecting seat body is integrally injection molded with a wall surrounding it, so that after the switch seat and the connecting seat are connected, they jointly construct a second closed chamber, and the switch assembly is arranged in the second closed chamber, so that the inner end of the rotating shaft equipped with the switch driving body is located in the second closed chamber, and the switch driving body is arranged corresponding to the switch moving and static contact piece assembly to realize the driving of the opening and closing of the switch moving and static contact piece assembly.

15. The assembly method according to claim 14, wherein, In step one, when the resistor body is made on the inner end wall of the end of the bushing during the injection molding of the bushing, the bushing is also made with a radially extending lead-out end arranged corresponding to the resistor body during the injection molding; When the resistor body is made on the end wall of the connecting seat body during the injection molding of the connecting seat, the connecting seat is also made with a radially extending lead-out end arranged corresponding to the resistor body during the injection molding.

16. The assembly method according to claim 14, wherein, In step one, the switch seat end is provided with a switch pin through-hole; in step one, the switch moving and static contact piece assembly has moving and static contact pieces, and the moving and static contact pieces are respectively integrally formed with switch pins; in step two, the switch pins are inserted into the switch pin through-holes and extend out of the end of the switch seat.

17. The assembly method according to claim 14, wherein, In step one, the switch seat is made with switch pins radially extending out of the switch seat during injection molding; in step two, the switch moving and static contact piece assembly has moving and static contact pieces, and the moving and static contact pieces are respectively connected to the inner ends of the corresponding switch pins.

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