CN205028814U - DC speed regulation switch - Google Patents
DC speed regulation switch Download PDFInfo
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- CN205028814U CN205028814U CN201520770504.1U CN201520770504U CN205028814U CN 205028814 U CN205028814 U CN 205028814U CN 201520770504 U CN201520770504 U CN 201520770504U CN 205028814 U CN205028814 U CN 205028814U
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Abstract
The utility model provides a DC speed regulation switch, but the moving contact is installed on the casing with passing through the elastic component integral translation, when using external force to press the driving piece, the driving piece atress removes, relieve blockking the moving contact, elastic component release of energy promotes the moving contact integral translation, thereby communicate with quiet male contact, because it is the elasticity of elastic component to promote the drive power of moving contact integral translation, it is irrelevant with the dynamics of pressing the driving piece, no matter consequently the user presses the driving piece with which kind of dynamics, can not cause the extrusion to damage to the silver contact of establishing on the sound contact, in addition, but the moving contact install on the casing with passing through the elastic component integral translation, compare with prior art, do not need complicated rotation relation, therefore simple structure, it is little to make the degree of difficulty, low in production cost, the installation degree of difficulty is little.
Description
Technical field
The utility model relates to electric switch technical field, is specifically related to a kind of direct current speed adjustment switch.
Background technology
Direct current speed adjustment switch is widely used in hand held electric tool field, as electric drill, electric grinder, electric wrench and electric screwdriver etc., it generally comprises housing, for installing the adjustable shelf of control button, the contact assembly of break-make is controlled, for controlling changement that motor turns to and the speed adjusting gear for adjusting rotary speed by adjustable shelf.But in the prior art, moving contact is generally fixed on adjustable shelf moving up and down, and when pressing down adjustable shelf, moving contact is followed adjustable shelf and moved, thus contacts with fixed contact and connect; Because operating current is comparatively large, moving contact and fixed contact are generally silver contact, instantly press the dynamics of adjustable shelf larger time, the pressure between moving contact and fixed contact is comparatively large, easily damages silver contact.
Chinese patent literature CN103280358A discloses a kind of direct current speed adjustment switch, and specifically disclose a kind of structure driving moving contact to contact with fixed contact or be separated, as shown in Figure 1-2: moving contact 01 is bending plate, it comprises flat segments 011, flat segments 011 one end extends into bending section 012, and the other end is provided with moving contact 013; Support rotating portion 03 is formed between the middle part of flat segments 011 and action contact frame 02, contact stage clip 04 is provided with between flat segments 011 between support rotating portion 03 and moving contact 013 and housing, adjustable shelf 05 forms tapered ramp 051 in the position of corresponding bending section 012, when adjustable shelf 05 slides up and down, drive tapered ramp 051 along bending section about 012 slippage, moving contact 013 is rotated around support rotating portion 03, and under the effect of contact stage clip 04, realize moving contact 013 and contact with fixed contact 06 or be separated.
Technical scheme disclosed in this patent documentation, although can avoid people press adjustable shelf 05 dynamics excessive time the damage of sound contact that causes, but still there is following deficiency: 1) when adjustable shelf 05 slides up and down and drives tapered ramp 051 to interact with bending section 012, moving contact 01 needs to rotate around support rotating portion 03, because moving contact 01 own vol is less, and installation site is narrow, thus support rotating portion is set between moving contact 01 and action contact frame 02, obviously can make troubles to manufacturing, installing, cause manufacturing cost high, assembling difficulty is large; 2) relative with moving contact 013 moving contact 01 one end, realizes being electrically connected with miscellaneous part by support rotating portion, causes conveyance capacity weak, cannot adapt to the operating mode of big current; 3) mode by mutually extruding between tapered ramp 051 and bending section 012 realizes the break-make of sound contact, in order to overcome the elastic force of touch spring 04, extruding force between tapered ramp 051 and bending section 012 is comparatively large, after the use of certain hour, is easy to occur wear damage.
Utility model content
Therefore, the technical problems to be solved in the utility model is to overcome in prior art can avoid the excessive direct current speed adjustment switch manufacture difficulty causing sound contact to be damaged of pressing adjustable shelf dynamics large, the technological deficiency that production cost is high, thus provide that a kind of manufacture difficulty is little, production cost is low, and the excessive direct current speed adjustment switch causing sound contact to be damaged of pressing adjustable shelf dynamics can be avoided simultaneously.
For this reason, the utility model provides a kind of direct current speed adjustment switch, comprises
Housing;
Fixed contact, is fixedly installed on the housing;
Moving contact, relative with described fixed contact, and can be installed on the housing on integral translation ground by elastic component;
Actuator, moveable installation on the housing, have and described moving contact is stopped, make described elastic component accumulation of energy, and make described moving contact be separated the primary importance of disconnection with described fixed contact, move under external force and remove the stop to described moving contact, described elastic component is released energy, promote described moving contact integral translation and contact with described fixed contact the second place be communicated with.
As a kind of improvement project, described moving contact has the first side for arranging moving contact, and second side relative with described first side, and one end of described elastic component is fixedly connected with described second side, and the other end is fixedly connected with described housing.
As a kind of improvement project, described fixed contact is two, and respectively as current input terminal and current output terminal, described moving contact is provided with two moving contacts, when described actuator is in the second place, with the fixed contact be located on two described fixed contacts electric connection simultaneously.
As a kind of improvement project, described actuator comprises
Adjustable shelf, installation moving up and down is on the housing;
Stop part, is fixedly installed on described adjustable shelf, for stopping described moving contact;
Back-moving spring, be fixedly mounted between described adjustable shelf and described housing, there is the first state of accumulation of energy under external force, and after described external force reduces or removes, promote described adjustable shelf and then promote the second state that described stop part stops described moving contact.
As a kind of improvement project, also comprise the button being arranged on described adjustable shelf top, between described button and described housing, guide frame is installed.
As a kind of improvement project, described guide frame comprises
First guiding batten, is two, is fixedly installed on the housing, extend along described adjustable shelf moving direction, and form direction recess in centre;
Second guiding batten, is one, is fixedly installed on described button, inserts described direction recess inside and realizes being slidably connected along described adjustable shelf moving direction with described direction recess.
As a kind of improvement project, described guide frame also comprises
First slip blocking surface, is arranged on the side away from side, described direction recess bottom surface of two described first guide plates;
Second slip blocking surface, is oppositely arranged on the housing with described first slip blocking surface, when described second guide plate inserts described direction recess inside, fits contact with described first slip blocking surface;
3rd slip blocking surface, parallel with described first slip blocking surface, arrange on the housing;
4th slip blocking surface, is oppositely arranged on described button with described 3rd slip blocking surface, when described second guide plate inserts described direction recess inside, fits contact with described 3rd slip blocking surface;
Described first slip blocking surface, described 3rd slip blocking surface are arranged between described second slip blocking surface and described 4th slip blocking surface.
As a kind of improvement project, described housing comprises mutual fastening to form the first housing and the second housing that first closes spatial accommodation, described first housing and described second housing are also provided with for passing to stretch into the installing port that described first closes spatial accommodation inside for described actuator, described installing port madial wall is provided with relative to form installing space two stop flanges up and down, and described installing space inside is provided with the seal washer being suitable for actuator and passing.
As a kind of improvement project, also comprise and be fastened on described second hull outside to form the 3rd housing that second closes spatial accommodation, second closes spatial accommodation for installing switching mechanism.
As a kind of improvement project, described first housing is also provided with line outlet, for passing for the circuit be electrically connected with described switching mechanism, described line outlet place caves inward and is formed with recessed step groove structure.
The direct current speed adjustment switch that the utility model provides, has the following advantages:
1. direct current speed adjustment switch of the present utility model, moving contact can be arranged on housing to integral translation by elastic component, when using pressed by external force actuator, the stressed movement of actuator, remove the stop to moving contact, elastic component releases energy and promotes moving contact integral translation, thus contact with fixed contact and be communicated with, due to the elastic force that the actuating force promoting moving contact integral translation is elastic component, have nothing to do with the dynamics of pressing actuator, no matter therefore user is with which kind of dynamics pressing actuator, all extrusion damage can not be caused to the silver contact be located on dynamic/static contact; In addition, moving contact can be arranged on housing to integral translation by elastic component, and compared with prior art, do not need complicated rotation relation, thus structure is simple, and manufacture difficulty is little, and production cost is low, and installation difficulty is little.
2. direct current speed adjustment switch of the present utility model, one end of elastic component is fixedly connected with the second side, the other end is fixedly connected with housing, when actuator is in primary importance, the energy storage of elastic component pressurized, when actuator is in the second place, elastic component extends and releases energy, and then promote moving contact to the integral translation of fixed contact direction, realize the electrical connection between dynamic/static contact.
3. direct current speed adjustment switch of the present utility model, moving contact is provided with two moving contacts, relative with two silver contacts be located at respectively on two fixed contacts, when above-mentioned two moving contacts contact with two fixed contacts respectively connect time, connection circuit, when above-mentioned two moving contacts separate with two fixed contacts, cut off circuit; This makes moving contact of the present utility model without the need to being directly connected with power line, thus structure is more simply light, and those skilled in the art can be located at the size of the contact on dynamic/static contact by adjustment, adjust the current applications that dynamic/static contact can be applied, thus can range of application be expanded, be applicable to big current operating mode.
4. direct current speed adjustment switch of the present utility model, after second guiding batten is fit into direction recess inside, can lead to moving up and down of adjustable shelf, thus improve adjustable shelf move up and down precision, further, the first slip blocking surface, the second slip blocking surface, the 3rd slip blocking surface and the 4th slip blocking surface are also set up, these four slip blocking surfaces and above-mentioned second guiding batten are together with direction recess, can lead to adjustable shelf from the surrounding of adjustable shelf, thus improve guiding precision further.
5. direct current speed adjustment switch of the present utility model, first housing and the second housing are provided with for passing to stretch into the installing port that first closes spatial accommodation for actuator, installing port madial wall is provided with relative to form installing space two stop flanges up and down, installing space inside is provided with the seal washer being suitable for actuator and passing, the setting of seal washer, dust can be avoided from installing port position to enter first and to close spatial accommodation inside, thus be conducive to keeping being arranged on the clean of the first closed spatial accommodation inner components.
6. direct current speed adjustment switch of the present utility model, first housing is also provided with line outlet, for passing for the circuit be electrically connected with switching mechanism, cave inward at line outlet place and be formed with recessed step groove structure, recessed step groove and through line outlet circuit be formed with accommodation space, those skilled in the art can use sealant sealing herein, thus it is inner to avoid dust to enter into the first closed spatial accommodation from line outlet, thus improve anti-dust performance further.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in prior art or the utility model embodiment, the accompanying drawing used in describing prior art or embodiment is below briefly described, apparently, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the cross-sectional view of direct current speed adjustment switch in prior art.
Fig. 2 be in Fig. 1 moving contact and contact stage clip combination after stereogram.
Fig. 3 is the stereogram of direct current speed adjustment switch in embodiment 1.
Fig. 4 is the detonation configuration figure of Fig. 3.
Fig. 5 is button, spatial relation structure chart between adjustable shelf and dynamic and static contact.
Fig. 6 is the stereogram after housing, adjustable shelf and button combination.
Fig. 7 is the stereogram after the first housing and dynamic and static contact combinations.
Fig. 8 is the detonation configuration figure of Fig. 7.
Fig. 9 is the stereogram after button, adjustable shelf and the first housing and the second shell combination.
Figure 10 is the stereogram in Fig. 9 after the first housing and the second shell combination.
Figure 11 is the stereogram of button in Fig. 9.
Figure 12 is the rearview of Fig. 1.
Reference numeral: 01-moving contact, 011-flat segments, 012-bending section, 013-moving contact, 02-action contact frame, 03-support rotating portion, 04-contact stage clip, 05-adjustable shelf, 051-tapered ramp, 06-fixed contact;
1-fixed contact, 10-fixed contact, 2-moving contact, 20-moving contact, 21-first side, 22-second side, 3-housing, 30-installing port, 31-first housing, 32-second housing, 33-the 3rd housing, 34-seal washer, 35-stop flange, 36-line outlet, 4-elastic component, 5-adjustable shelf, 51-stop part, 52-back-moving spring, 6-button, 7-first leads batten, 70-direction recess, 71-first slides blocking surface, 72-second slides blocking surface, 73-the 3rd slip blocking surface, 74-the 4th slip blocking surface, 8-second leads batten, 9-switching mechanism.
Embodiment
Be described the technical solution of the utility model below in conjunction with Figure of description, obviously, following embodiment is not the whole embodiment of the utility model.Based on the embodiment described by the utility model, those of ordinary skill in the art, not making the every other embodiment obtained under other creative work prerequisites, belong to protection range of the present utility model.
It should be noted that, in description of the present utility model, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.In addition, if below in the described different execution mode of the utility model involved technical characteristic do not form conflict each other and just can be combined with each other.
Embodiment
The present embodiment provides a kind of direct current speed adjustment switch, as in Figure 3-5, comprises housing 3; Be fixedly installed on the fixed contact 1 on housing 3; Relative with fixed contact 1, and the moving contact 2 on housing 3 can be arranged on to integral translation by elastic component 4; Movably be arranged on the actuator on described housing 3, have and moving contact 2 is stopped, make elastic component 4 accumulation of energy, and make moving contact 2 be separated the primary importance of disconnection with fixed contact 1, move under external force and remove the stop to moving contact 2, elastic component 4 is released energy, promotes moving contact 2 integral translation and contact with fixed contact 1 second place be communicated with.
The direct current speed adjustment switch of the present embodiment, due to the elastic force that the actuating force promoting moving contact 2 integral translation is elastic component 4, have nothing to do with the dynamics of pressing actuator, no matter therefore user is with which kind of dynamics pressing actuator, all extrusion damage can not be caused to the silver contact be located on fixed contact 1 and moving contact 2; In addition, moving contact 2 can be arranged on to integral translation on housing 3 by elastic component 4, and compared with prior art, do not need complicated rotation relation, thus structure is simple, and manufacture difficulty is little, and production cost is low, and installation difficulty is little.
Concrete, as shown in Fig. 5, Fig. 7 and Fig. 8, moving contact 2 has the first side 21 for arranging moving contact 20, and second side 22 relative with the first side 21, and one end of elastic component 4 is fixedly connected with the second side 22, and the other end is fixedly connected with housing 3.When actuator is in primary importance, the energy storage of elastic component 4 pressurized, when actuator is in the second place, elastic component 4 extends and releases energy, and then promotes moving contact 2 to fixed contact 1 direction integral translation, realizes the electrical connection between dynamic/static contact.
In the present embodiment, fixed contact 1 is two, and respectively as current input terminal and current output terminal, moving contact 2 is provided with two moving contacts 20, is respectively used to and the fixed contact 10 be located on two fixed contacts 1 electric connection simultaneously.When above-mentioned two moving contacts 20 contact with two fixed contacts 10 respectively connect time, connection circuit, when above-mentioned two moving contacts 20 separate with two fixed contacts 10, cut off circuit; This makes the moving contact 2 of the present embodiment without the need to being directly connected with power line, thus structure is more simply light, and those skilled in the art can be located at the size of the contact on dynamic/static contact by adjustment, adjust the current applications that dynamic/static contact can be applied, thus can range of application be expanded, be applicable to big current operating mode.
As seen in figs. 5-6, actuator comprises the adjustable shelf 5 be arranged on described housing 3 moving up and down; Be fixedly installed on adjustable shelf 5, for the stop part 51 stopped moving contact 2; Be fixedly mounted on the back-moving spring 52 between described adjustable shelf 5 and described housing 3, there is the first state of accumulation of energy under external force, with after described external force reduction or releasing, the second state that promotion adjustable shelf 5 and then promotion stop part 51 pairs of moving contacts 2 stop.
Adjustable shelf 5 top is provided with button 6, is provided with guide frame between button 6 and housing 3.Guide frame comprises and being fixedly installed on housing 3, and is also formed with direction recess 70 between two first guiding battens 7, two the first guiding battens 7 extended along adjustable shelf 5 moving direction; One second guiding batten 8, is fixedly installed on described button 6, inserts described direction recess 70 inside and realizes being slidably connected along described adjustable shelf 5 moving direction with described direction recess 70.
In addition, as shown in figs. 9-11, described guide frame also comprises the first slip blocking surface 71, is arranged on the side away from side, described direction recess 70 bottom surface of two described first guide plates 7; Second slip blocking surface 72, is oppositely arranged on described housing 3 with described first slip blocking surface 71, when described second guide plate 8 inserts described direction recess 70 inside, fits contact with described first slip blocking surface 71; 3rd slip blocking surface 73, parallel with described first slip blocking surface 71, be arranged on described housing 3; 4th slip blocking surface 74, is oppositely arranged on described button 6 with described 3rd slip blocking surface 73, when described second guide plate 8 inserts described direction recess 70 inside, fits contact with described 3rd slip blocking surface 73; Described first slip blocking surface 71, described 3rd slip blocking surface 73 are arranged between described second slip blocking surface 72 and described 4th slip blocking surface 74.These four slip blocking surfaces and above-mentioned second guiding batten 8, together with direction recess 70, can lead to adjustable shelf 5 from the surrounding of adjustable shelf 5, thus improve guiding precision further.
As described in Figure 4, housing 3 comprises the first housing 31 and the second housing 32 mutually fastened to form the first closed spatial accommodation, described first housing 31 and described second housing 32 are also provided with for passing to stretch into the installing port 30 that described first closes spatial accommodation inside for described actuator, described installing port 30 madial wall is provided with relative to form installing space two stop flanges 35 up and down, and described installing space inside is provided with the seal washer 34 being suitable for actuator and passing.The setting of seal washer 34, can avoid dust to enter first from installing port position and close spatial accommodation inside, thus is conducive to keeping being arranged on the clean of the first closed spatial accommodation inner components.
Also comprise being fastened on outside described second housing 32 and close spatial accommodation for installing switching mechanism 9 to form the second the 3rd housing 33, second closing spatial accommodation.
As shown in figure 12, described first housing 31 is also provided with line outlet 36, for passing for the circuit be electrically connected with described switching mechanism 9, described line outlet 36 place caves inward and is formed with recessed step groove structure.Those skilled in the art can use sealant sealing herein, thus it is inner to avoid dust to enter into the first closed spatial accommodation from line outlet 36, thus improve anti-dust performance further.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among the protection range of the invention.
Claims (10)
1. a direct current speed adjustment switch, is characterized in that: comprise
Housing (3);
Fixed contact (1), is fixedly installed on described housing (3);
Moving contact (2), relative with described fixed contact (1), and can be arranged on to integral translation on described housing (3) by elastic component (4);
Actuator, movably be arranged on described housing (3), have and described moving contact (2) is stopped, make described elastic component (4) accumulation of energy, and make described moving contact (2) be separated with described fixed contact (1) primary importance disconnected, move under external force and remove the stop to described moving contact (2), described elastic component (4) is released energy, promote (2) integral translation of described moving contact and contact with described fixed contact (1) second place be communicated with.
2. direct current speed adjustment switch according to claim 1, it is characterized in that: described moving contact (2) has the first side (21) for arranging moving contact (20), and second side (22) relative with described first side (21), one end of described elastic component (4) is fixedly connected with described second side (22), and the other end is fixedly connected with described housing (3).
3. direct current speed adjustment switch according to claim 1 and 2, it is characterized in that: described fixed contact (1) is two, respectively as current input terminal and current output terminal, described moving contact (2) is provided with two moving contacts (20), when described actuator is in the second place, with the fixed contact (10) be located on two described fixed contacts (1) electric connection simultaneously.
4. direct current speed adjustment switch according to claim 1 and 2, is characterized in that: described actuator comprises
Adjustable shelf (5), is moving up and downly arranged on described housing (3);
Stop part (51), is fixedly installed on described adjustable shelf (5), for stopping described moving contact (2);
Back-moving spring (52), be fixedly mounted between described adjustable shelf (5) and described housing (3), there is the first state of accumulation of energy under external force, after reducing in described external force or removing, promote described adjustable shelf (5) and then promote the second state that described stop part (51) stops described moving contact (2).
5. direct current speed adjustment switch according to claim 4, is characterized in that: also comprise the button (6) being arranged on described adjustable shelf (5) top, be provided with guide frame between described button (6) and described housing (3).
6. direct current speed adjustment switch according to claim 5, is characterized in that: described guide frame comprises
First guiding batten (7), is two, is fixedly installed on described housing (3), extends along described adjustable shelf (5) moving direction, and forms direction recess (70) in centre;
Second guiding batten (8), is one, is fixedly installed on described button (6), inserts described direction recess (70) inside and realizes being slidably connected along described adjustable shelf (5) moving direction with described direction recess (70).
7. direct current speed adjustment switch according to claim 6, is characterized in that: described guide frame also comprises
First slip blocking surface (71), is arranged on the side away from described direction recess (70) side, bottom surface of two described first guide plates (7);
Second slip blocking surface (72), is oppositely arranged on described housing (3) with described first slip blocking surface (71), when described second guide plate (8) inserts described direction recess (70) inside, fits contact with described first slip blocking surface (71);
3rd slip blocking surface (73), parallel with described first slip blocking surface (71), be arranged on described housing (3);
4th slip blocking surface (74), is oppositely arranged on described button (6) with described 3rd slip blocking surface (73), when described second guide plate (8) inserts described direction recess (70) inside, fits contact with described 3rd slip blocking surface (73);
Described first slip blocking surface (71), described 3rd slip blocking surface (73) are arranged between described second slip blocking surface (72) and described 4th slip blocking surface (74).
8. direct current speed adjustment switch according to claim 7, it is characterized in that: described housing (3) comprises mutual fastening to form the first housing (31) and the second housing (32) that first closes spatial accommodation, described first housing (31) and described second housing (32) are also provided with for passing to stretch into the installing port (30) that described first closes spatial accommodation inside for described actuator, described installing port (30) madial wall is provided with relative to form installing space two stop flanges (35) up and down, described installing space inside is provided with the seal washer (34) being suitable for actuator and passing.
9. direct current speed adjustment switch according to claim 8, is characterized in that: also comprise and be fastened on described second housing (32) outside to form the 3rd housing (33) that second closes spatial accommodation, second closes spatial accommodation for installing switching mechanism (9).
10. direct current speed adjustment switch according to claim 9, it is characterized in that: described first housing (31) is also provided with line outlet (36), for passing for the circuit be electrically connected with described switching mechanism (9), described line outlet (36) place caves inward and is formed with recessed step groove structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520770504.1U CN205028814U (en) | 2015-09-30 | 2015-09-30 | DC speed regulation switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520770504.1U CN205028814U (en) | 2015-09-30 | 2015-09-30 | DC speed regulation switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205028814U true CN205028814U (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520770504.1U Active CN205028814U (en) | 2015-09-30 | 2015-09-30 | DC speed regulation switch |
Country Status (1)
| Country | Link |
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| CN (1) | CN205028814U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105097321A (en) * | 2015-09-30 | 2015-11-25 | 乐清市东科电气有限公司 | DC speed control switch |
| WO2023217262A1 (en) * | 2022-05-13 | 2023-11-16 | 博世电动工具（中国）有限公司 | Switch assembly for electric tool |
-
2015
- 2015-09-30 CN CN201520770504.1U patent/CN205028814U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105097321A (en) * | 2015-09-30 | 2015-11-25 | 乐清市东科电气有限公司 | DC speed control switch |
| WO2023217262A1 (en) * | 2022-05-13 | 2023-11-16 | 博世电动工具（中国）有限公司 | Switch assembly for electric tool |
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