CN213340167U - Brake crank power-off switch - Google Patents
Brake crank power-off switch Download PDFInfo
- Publication number
- CN213340167U CN213340167U CN202022854829.1U CN202022854829U CN213340167U CN 213340167 U CN213340167 U CN 213340167U CN 202022854829 U CN202022854829 U CN 202022854829U CN 213340167 U CN213340167 U CN 213340167U
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- spring
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- movable contact
- switch
- shell
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Abstract
The utility model relates to a brake lever power-off switch, including shell and swing joint button on the shell, form the opening on the shell, be provided with first spring in the opening, first spring is located between shell and the button, is connected with the static contact on the shell, and the static contact setting is on the open-ended lateral wall, be connected with the movable contact spring on the button, the static contact is connected with the movable contact spring and is formed the linkage cooperation, the open-ended lateral wall forms the sand grip, and sand grip and static contact setting are on same lateral wall, be provided with the second spring between movable contact spring and the button, the sand grip is located the movable contact spring along with the route that the button pushed down. The utility model discloses brake lever power-off switch has add the separation of movable contact spring and static contact when the sand grip is used for the switch action for can not take place the contact with the opening lateral wall during the movable contact spring action, long-term the use can not influence power-off switch's insulation rating, improves power-off switch job stabilization nature.
Description
Technical Field
The utility model relates to an electric motor car technical field especially relates to a brake lever power off switch.
Background
With the enhancement of environmental awareness, electric vehicles have become one of the important transportation means of office workers today. The outage brake lever of electric motor car is the important part of guaranteeing electric motor car safety of riding, and the effect of outage brake lever makes its inside outage switch action through nipping the brake lever, realizes the outage of motor.
The existing brake crank power-off switch comprises a shell and a button movably connected to the shell, a static contact piece is fixed on the inner wall of the shell, a movable contact piece is connected to the button, the movable contact piece is in contact with the static contact piece under the condition that the brake crank is not operated, and the movable contact piece can slide along the inner wall of the shell along with the button and stagger with the static contact piece under the condition that the brake crank is operated, so that the breaking of the movable contact piece and the static contact piece is realized. However, such a power-off switch has the following technical problems: after the brake crank is used for a long time (namely after the action frequency of the power-off switch reaches a certain number), the movable contact spring and the inner wall of the shell are rubbed for a long time, so that scratches with copper powder are easily formed on the inner wall of the shell, the resistance value of an insulation resistor during breaking is greatly reduced, the qualified insulation level cannot be reached during breaking of the power-off switch, even the situation that the power-off switch still keeps on power can occur, and the brake crank has serious potential safety hazard.
Disclosure of Invention
In view of this, the utility model aims at providing a brake crank power-off switch of long service life can not influence power-off switch's insulating level after long-term the use, improves the reliability that power-off switch used.
In order to realize above mesh, the utility model discloses a such brake crank power-off switch, including shell and swing joint the button on the shell, form the opening on the shell, be provided with first spring in the opening, first spring is located between shell and the button, is connected with the static contact on the shell, and the static contact setting is on the open-ended lateral wall, be connected with the movable contact on the button, the static contact is connected with the movable contact and is formed the linkage cooperation, open-ended lateral wall forms the sand grip, and the sand grip sets up on same lateral wall with the static contact, be provided with the second spring between movable contact and the button, the sand grip is located the movable contact and presses down along with the button on the route.
The action principle of the brake crank power-off switch is as follows: when the brake crank does not act, the movable contact is electrically connected with the static contact under the action of the second spring; when the brake crank does not act (return), the button is in a pressing state, and the movable contact piece is separated from the static contact piece to break the power-off switch; when the brake handle acts, the button is driven to rise upwards, and the button moves upwards to be electrically connected with the static contact piece under the action of the second spring of the movable contact piece. When the brake lever return, drive the button and push down, the movable contact spring moves down along with the button, and the movable contact spring is after breaking away from the static contact spring and forms the linkage cooperation with the sand grip simultaneously, and under the sand grip effect, the movable contact spring is lifted and can not contact with open-ended lateral wall to can not leave copper end scratch, can not influence outage switch's insulation grade. The utility model discloses brake lever power-off switch has add the separation of movable contact spring and static contact when the sand grip is used for the switch action for can not take place the contact with the opening lateral wall during the movable contact spring action, long-term the use can not influence power-off switch's insulation rating, improves power-off switch job stabilization nature.
The utility model discloses further set up to form the hole groove on the button, the movable contact spring includes the contact site, the contact site is just to the hole groove, the second spring sets up at the hole inslot, and the one end of second spring is supported bottom the hole groove, and the other end of second spring supports one side at the contact site.
The above-mentioned hole groove is used for positioning second spring, and makes the spring apply a stable acting force to side wall of opening to movable contact.
This practicality further sets up to the both sides in hole groove and forms the joint piece respectively, the both ends of contact site all form location portion, form the bayonet socket on the location portion, the movable contact spring passes through the cooperation of bayonet socket and joint piece and connects on the button.
The movable contact piece is positioned on the button through the clamping structure, and the assembly of a product is facilitated.
The utility model is further arranged in such a way that the other side of the contact part forms a convex point.
The salient points enable the movable contact piece and the static contact piece to generate interference fit, and the stability of electric connection of the power-off switch in a normally closed state is improved.
The utility model discloses further set up to the bottom of button and form the base with opening size adaptation, form the guide way on the base, the sand grip is connected in the guide way.
The guide groove on the base is matched with the raised line to provide guide for the action of the button in the opening of the shell.
The utility model discloses further set up to the base and form the kerve down, first spring setting is in the kerve, and the one end of first spring is supported in the open-ended bottom, and the other end of first spring supports the top at the kerve.
The bottom groove is arranged on the button and used for positioning the first spring, so that the first spring is prevented from deviating to influence the operation of the button.
This practicality further sets up to the sand grip and is close to one side formation inclined plane of movable contact spring.
The inclined plane provides a buffering effect when the movable contact leaves the static contact and enters the raised line, so that the button is prevented from being blocked during action, and the action of the button is smoother.
Drawings
Fig. 1 is an exploded view of an embodiment of the present invention.
Fig. 2 is an exploded view of the embodiment of the present invention with the outer shell removed.
Fig. 3 is a side view of an embodiment of the present invention.
Fig. 4 is a cross-sectional view a-a of fig. 3.
Fig. 5 is a sectional view of an outer shell according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1-5, the present invention is a brake lever power-off switch, comprising a housing 1 and a button 2 movably connected to the housing 1, wherein an opening 11 is formed on the housing 1, a first spring 3 is disposed in the opening 11, a static contact piece 4 is connected to the housing 1, the static contact piece 4 is disposed on a side wall of the opening 11, a movable contact piece 5 is connected to the button 2, the static contact piece 4 is connected to the movable contact piece 5 to form a linkage fit, a protruding strip 12 is formed on a side wall of the opening 11, the protruding strip 12 and the static contact piece 4 are disposed on the same side wall, a second spring 6 is disposed between the movable contact piece 5 and the button 2, a hole 21 is formed on the button 2, the movable contact piece 5 comprises a contact portion 51, the contact portion 51 is opposite to the hole 21, the second spring 6 is disposed in the hole 21, one end of the second spring 6 is abutted to the bottom of the hole 21, the other end of the second spring 6 is abutted to one, the other side of the contact part 51 forms a convex point 511, the two sides of the hole 21 form clamping blocks 22 respectively, the two ends of the contact part 51 form positioning parts 52, a bayonet 521 is formed on the positioning part 52, the movable contact piece 5 is connected to the button 2 through the matching of the bayonet 521 and the clamping blocks 22, the bottom of the button 2 forms a base 23 matched with the opening 11 in size, the base 23 forms a guide groove 231, the convex strip 12 is connected in the guide groove 231, the base 23 faces downwards to form a bottom groove 232, the first spring 3 is arranged in the bottom groove 232, one end of the first spring 3 abuts against the bottom of the opening 11, the other end of the first spring 3 abuts against the top of the bottom groove 232, the convex strip 12 is positioned on a path along which the movable contact piece 5 presses down along with the button 2, and one side of the convex strip 12, which is close to the movable contact piece 5, forms an inclined plane 121.
According to the above embodiment, the utility model discloses brake lever power-off switch's action principle does: when the brake crank does not act (return), the button is in a pressing state, and the movable contact piece is separated from the static contact piece to break the power-off switch; when the brake handle acts, the button is driven to rise upwards, and the button moves upwards to be electrically connected with the static contact piece under the action of the second spring of the movable contact piece. When the brake lever return, drive the button and push down, the movable contact spring moves down along with the button, and the movable contact spring is after breaking away from the static contact spring and forms the linkage cooperation with the sand grip simultaneously, and under the sand grip effect, the movable contact spring is lifted and can not contact with open-ended lateral wall to can not leave copper end scratch, can not influence outage switch's insulation grade.
In addition to the above embodiments, there are also other embodiments of the present invention, and those skilled in the art can make various corresponding changes and modifications according to the present invention without departing from the spirit and scope of the present invention, and those changes and modifications are equivalent to the technical solutions in the present patent, and then those corresponding changes and modifications are all within the scope of the appended claims.
Claims (7)
1. The utility model provides a brake crank power-off switch, includes shell and swing joint the button on the shell, form the opening on the shell, be provided with first spring in the opening, first spring is located between shell and the button, is connected with the static contact on the shell, and the static contact sets up on the open-ended lateral wall, be connected with the movable contact on the button, the static contact is connected with the movable contact and is formed linkage cooperation, its characterized in that: the side wall of the opening is provided with a raised line, the raised line and the static contact piece are arranged on the same side wall, a second spring is arranged between the movable contact piece and the button, and the raised line is positioned on a path along which the movable contact piece is pressed down along with the button.
2. The brake lever power-off switch according to claim 1, wherein: the button is provided with a hole groove, the movable contact piece comprises a contact part, the contact part is opposite to the hole groove, the second spring is arranged in the hole groove, one end of the second spring is abutted to the bottom of the hole groove, and the other end of the second spring is abutted to one side of the contact part.
3. The brake lever power-off switch of claim 2, wherein: the movable contact spring is characterized in that clamping blocks are respectively formed on two sides of the hole groove, positioning portions are formed at two ends of the contact portion, a bayonet is formed in each positioning portion, and the movable contact spring is connected to the button through matching of the bayonet and the clamping blocks.
4. A brake lever power-off switch according to claim 2 or 3, wherein: and a bump is formed on the other side of the contact part.
5. The brake lever power-off switch according to claim 1, 2 or 3, wherein: the bottom of button forms the base with opening size adaptation, form the guide way on the base, the sand grip is connected in the guide way.
6. The brake crank power-off switch according to claim 5, wherein: the base forms the kerve down, first spring sets up in the kerve, and the one end of first spring supports in the open-ended bottom, and the other end of first spring supports in the top of kerve.
7. The crank power-off switch as claimed in claim 1, 2, 3 or 6, wherein: one side of the convex strip close to the movable contact spring forms an inclined plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022854829.1U CN213340167U (en) | 2020-12-02 | 2020-12-02 | Brake crank power-off switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022854829.1U CN213340167U (en) | 2020-12-02 | 2020-12-02 | Brake crank power-off switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213340167U true CN213340167U (en) | 2021-06-01 |
Family
ID=76079463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022854829.1U Active CN213340167U (en) | 2020-12-02 | 2020-12-02 | Brake crank power-off switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213340167U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114496625A (en) * | 2022-03-25 | 2022-05-13 | 乐清市兴辉电子有限公司 | Brake crank power-off switch |
-
2020
- 2020-12-02 CN CN202022854829.1U patent/CN213340167U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114496625A (en) * | 2022-03-25 | 2022-05-13 | 乐清市兴辉电子有限公司 | Brake crank power-off switch |
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