CN216957824U - Brake crank power-off switch - Google Patents

Abstract

The utility model discloses a brake crank power-off switch, which comprises a base, a cover plate, a button, a first conducting plate, a second conducting plate, a conducting piece, a first resetting piece and a sealing plate, wherein the first conducting plate and the second conducting plate are fixed with the base; the utility model has the advantages of convenient installation, high processing efficiency and good sealing property.

Description

Brake crank power-off switch

Technical Field

The utility model relates to a brake crank power-off switch.

Background

The brake handle power-off switch is in a normally closed state in a normal state, when the brake handle moves, the driving piece of the switch moves, and therefore a power-off signal is formed, and when the force applied to the brake handle disappears, the brake handle power-off switch returns to an initial state.

The existing brake crank power-off switch is characterized in that two ends of a conductive piece are respectively connected with two conductive pieces, so that the effect of electrical communication is realized, a spring is arranged at the lower end of the conductive piece, and the reset effect of the conductive piece is achieved through the spring. And the two conducting strips are arranged in a 7-shaped manner, and after the conducting strips are connected and fixed with the base, the conducting pieces are difficult to install below the 7-shaped conducting strips. Meanwhile, due to the existence of the spring, in the installation process, an operator needs to manually extrude the spring, and then the installation and fixation effects of the conductive piece are achieved. The operation and installation mode is difficult to operate and cannot realize quick installation. Meanwhile, the spring is extruded by an operator for a long time, so that hands are easily injured, and the production efficiency is low.

In addition, because the size restriction of brake lever cut-off switch, so the size of electrically conductive piece is less, and electrically conductive specifically is cylindrical, and the diameter is 1.2mm, and length is 5.4mm, has further increased holistic installation degree of difficulty.

SUMMERY OF THE UTILITY MODEL

The utility model mainly solves the technical problem of providing a brake crank power-off switch.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a brake crank power off switch, wherein, which comprises a base, the apron, the button, first conducting strip and the second conducting strip fixed with the base, electrically conductive piece, first piece and the shrouding that resets, be equipped with in the base, the chamber that holds of under shed, the apron is connected fixedly with the upper shed, the button passes the apron and stretches into to holding the intracavity, the button lower extreme is connected with the first piece that resets through electrically conductive piece, first conducting strip is 7 types with the second conducting strip, first conducting strip all is located the motion trail of electrically conductive piece with the second conducting strip, first piece one end that resets offsets with electrically conductive, the other end offsets with the shrouding, the shrouding is connected fixedly with the under shed.

By adopting the structure, in the installation process, the first conducting strip and the second conducting strip are firstly connected and fixed with the base, as the two conducting strips are arranged in a 7-shaped manner, the top end of the 7-shaped conducting strip is positioned above, then the button part extends into the accommodating cavity, and then the button part is connected and fixed with the upper opening through the cover plate, so that the button is fixed in the accommodating cavity, and the button can vertically move up and down relative to the accommodating cavity; next, from the electrically conductive piece of under shed installation of base, the installation of below need not press the spring, also need not stretch into 7 style of calligraphy below from the side, directly carry out the installation of electrically conductive piece, and because the injecing of two conducting strips, electrically conductive piece has formed spacing fixed effect this moment, at last with first reset piece installation to holding the intracavity, make first one end that resets offset with electrically conductive piece, under the action of gravity, electrically conductive piece and first fixed effect of realization that can be fine that resets, seal the under shed through the shrouding at last, thereby realize complete installation effect. Compared with various problems in the prior art, the installation mode is respectively carried out from the upper end and the lower end under the condition, the overall installation efficiency is improved, the work difficulty of operators is reduced, meanwhile, the installation mode can also be suitable for automatic operation, can directly replace manpower, and further improves the assembly efficiency.

Wherein, the lateral wall of holding the chamber is equipped with the first spout of two symmetry settings, and the both ends of electrically conductive piece slide in first spout.

The arrangement of the first sliding groove enables the conductive piece to vertically slide in the process, a guiding effect is achieved, and the overall sliding efficiency is improved.

Wherein, be equipped with the second spout that two symmetries set up on the lateral wall that holds the chamber, be equipped with the sliding part with the second spout adaptation on the button.

The setting of second spout for the whole in-process that slides about perpendicular of button has also played a direction effect, improves the gliding efficiency of button.

The button is provided with a first fixed cavity, the conductive part is positioned in the first fixed cavity, and the first reset part extends into the first fixed cavity and abuts against the conductive part.

The setting in first fixed chamber for better and the button cooperation of electrically conductive piece realizes a linkage effect, and the first piece part that resets stretches into to first fixed intracavity, makes the first piece that resets play certain support guide effect, prevents that in the use, the first piece that resets from taking place the skew, influences the effect that resets.

The first fixing cavity is provided with a first limiting bulge, and the first limiting bulge is positioned on the motion trail of the conductive piece.

The arrangement of the first limiting bulges forms a limiting and fixing effect of the conductive piece, so that the conductive piece can only slide in the first fixing cavity, and the conductive piece is prevented from falling off in the use process.

The first limiting bulge comprises a first inclined plane, a first plane and a first limiting surface, the first inclined plane is connected with the first limiting surface through the first plane, and the first limiting surface is located on the motion track of the conductive piece.

First spacing arch is at the installation, and conductive piece forms a guide effect along first inclined plane earlier, then slides to first fixed intracavity on first plane, and conductive piece gets into to first fixed intracavity back, forms a fixed effect, and first spacing face is located the movement track of conductive piece to realize a spacing fixed effect.

The first fixing cavity is provided with a first limiting bulge, the first limiting bulge is matched with the side wall where the first limiting bulge is located to form a first channel, the second limiting bulge is matched with the first limiting bulge to form a second channel, the first channel is communicated with the second channel, and the size of the first channel is larger than that of the second channel.

The arrangement of the first channel and the second channel is adopted, the integral guiding and mounting effect is further improved, and meanwhile, the conductive piece is prevented from sliding out of the first fixing cavity.

The button is connected with the first reset piece, the second reset piece is connected with the button, and the button is connected with the second reset piece.

Adopt the second to reset the setting of piece for under normal condition, the guide is connected with first conducting strip, second conducting strip, and here if the mistake bumps or normal shake appears, leads to the button to take place slight pushing down, because the second resets the effect of piece, the button has certain buffer stroke, and slight pushing down operation takes place for the button, can not make first conducting strip and second conducting strip disconnection, thereby ensures to continue to work under normal condition, can not take place the maloperation phenomenon.

The button is provided with a second fixed cavity communicated with the first fixed cavity, one end of the second reset piece is abutted against the second fixed cavity, and the other end of the second reset piece is abutted against the conductive piece.

Adopt the setting in the fixed chamber of second for the second resets a fixed effect of better realization of piece, prevents to shift, and simultaneously, the second resets and is difficult for following the fixed intracavity roll-off of second.

Wherein, the first piece that resets and the second piece that resets are the coaxial axle setting.

The first piece that resets and the second piece that resets adopt coaxial center setting, and both cooperations form the effect that the double buffering resets, improve holistic life and the efficiency that resets.

Wherein, be equipped with first location arch on the shrouding, be equipped with first breach on the under shed, first location arch stretches into to in the first breach.

The setting of first location arch for the shrouding better be connected fixedly with the under shed, realize a closed effect.

Wherein, be equipped with the second location arch on the shrouding, be equipped with the second breach on the under shed, the second location arch stretches into in the second breach.

The protruding setting of second location for the fixed effect of being connected between shrouding and the under shed is better, better realization closure effect with the protruding cooperation of first location.

The button is characterized by further comprising a waterproof sleeve, the waterproof sleeve is sleeved on the button, and the waterproof sleeve is located between the cover plate and the upper opening.

The waterproof sleeve is arranged, so that the upper opening achieves a waterproof sealing effect.

Wherein, the cover plate is connected with the upper opening in a buckling way.

The mode of buckle connection is adopted, so that the cover plate and the upper opening are more convenient to connect, and the cover plate can be detached at the same time.

Wherein, be equipped with the fixed column on the shrouding, first piece cover that resets is established on the fixed column.

The setting of fixed post for first piece that resets is fixed effect of better realization.

Wherein, the shrouding is connected for the buckle with the lower opening.

The arrangement of buckle connection is adopted, so that the sealing plate is fixedly connected with the lower opening, and the effect of fixing the sealing plate is realized.

Wherein, the closing plate and the lower opening are welded by laser.

Adopt laser welding's mode for the shrouding forms the integration with the under shed, thereby ensures holistic sealed effect, improves holistic sealed grade, and here shrouding and under shed still can weld welded fastening through ultrasonic fusion.

Drawings

FIG. 1 is a schematic structural view of embodiment 1 of the present invention;

FIG. 2 is a sectional view of embodiment 1 of the present invention;

FIG. 3 is a cross-sectional view from another angle in accordance with embodiment 1 of the present invention;

FIG. 4 is a cross-sectional view from another angle in accordance with embodiment 1 of the present invention;

FIG. 5 is a schematic structural view of a susceptor in embodiment 1 of the present invention;

FIG. 6 is a schematic view showing another angle structure of the susceptor in embodiment 1 of the present invention;

FIG. 7 is a schematic view of the structure of a push button in embodiment 1 of the present invention;

FIG. 8 is a front view of a push button in embodiment 1 of the present invention;

fig. 9 is a front view of a first conductive sheet in embodiment 1 of the present invention;

fig. 10 is a schematic structural view of a sealing plate in embodiment 1 of the present invention.

Detailed Description

Example 1:

referring to fig. 1 to 10, a brake lever power-off switch includes a base 10, a cover plate 11, a button 12, a waterproof cover 13, a first conductive plate 14, a second conductive plate 15, a conductive member 16, a first reset member 17, a second reset member 18, and a sealing plate 19.

It should be noted that, the brake lever power-off switch in the present embodiment is mainly used for a brake system of an electric vehicle, and has a small size, and the overall size is about 15 × 9mm, so the size is small, and a certain installation difficulty exists in the installation process.

The base 10 is provided with an accommodating cavity 101, and the accommodating cavity 101 is disposed to vertically penetrate through the base 10, so that an upper opening 102 and a lower opening 103 are formed, as the name implies, the upper opening 102 is located above the base 10, and the lower opening 103 is located below the base 10. The upper opening 102 is used for cooperating with the cover plate 11 to achieve the connection fixing effect of the cover plate 11. In this embodiment, a first cavity 1021 is disposed above the upper opening 102, a fixing hole 1022 is disposed on a side surface of the first cavity 1021, a part of the waterproof jacket 13 is embedded into the first cavity 1021, and the cover plate 11 is fixed to the first cavity 1021 in a snap-fit manner, so that the waterproof jacket 13 is located between the first cavity 1021 and the cover plate 11, and a waterproof effect is achieved.

The lower opening 103 is used to cooperate with the closing plate 19 to achieve the closing effect of the lower opening 103. In this embodiment, in order to better achieve the sealing effect between the sealing plate 19 and the lower opening 103, a second cavity 1031 is disposed below the lower opening 103, and the size of the second cavity 1031 is larger than that of the lower opening 103, so as to form a recess fixing effect. The lower opening 103 is provided with a first notch 1032 and a second notch 1033, the first notch 1032 and the second notch 1033 are disposed oppositely, for example, the first notch 1032 is located on a front sidewall of the lower opening 103, and the second notch 1033 is located on a rear sidewall of the lower opening 103. Further, it should be noted here that the first notch 1032 and the second notch 1033 are arranged in a step, and the first notch 1032 is partially located on the side wall of the lower opening 103 and partially extends to the side wall of the second cavity 1031, so as to achieve a step effect, and similarly, the second notch 1033 is also arranged in a step.

The accommodating cavity 101 is provided with a first sliding chute 1011, a second sliding chute 1012 and a fixing groove 1013, the number of the first sliding chute 1011 and the number of the second sliding chute 1012 are two, the two first sliding chutes 1011 are symmetrically arranged, the two second sliding chutes 1012 are also symmetrically arranged, the first sliding chute 1011 is used for being matched with the conductive piece 16, and the second sliding chute 1012 is used for being matched with the button 12. Here, the first sliding grooves 1011 and the second sliding grooves 1012 are not located on the same plane, that is, a virtual center connecting line of the two first sliding grooves 1011 and a virtual center connecting line of the two second sliding grooves 1012 are vertically disposed.

The number of the fixing grooves 1013 is two, the two fixing grooves 1013 are respectively located on two sides of the second sliding chute 1012, where the fixing grooves 1013 are used for being connected and fixed with the first conductive sheet 14 and the second conductive sheet 15, and specifically, the front ends of the 7-shaped fixing grooves extend into the fixing grooves 1013, so as to ensure the connection and fixing effect between the first conductive sheet 14, the second conductive sheet 15 and the base 10.

In addition, the outer wall of the housing is further provided with a mounting ring for mounting and fixing and a second clamping protrusion, which is a simple structure, and therefore, the detailed description is omitted in this embodiment.

The cover plate 11 is structurally matched with the first cavity 1021, and may be square, frustum-shaped, or cylindrical, and the specific shape thereof is adjusted according to the shape of the first cavity 1021. The cover plate 11 in this embodiment is preferably of a frustum type. The side wall of the cover plate 11 is provided with first clamping protrusions 111 matched with the fixing holes 1022, and the number of the first clamping protrusions 111 is at least two, so that the effect of connecting and fixing the cover plate 11 and the base 10 is realized. It should be noted here that the cover 11 is hollow, so that the button 12 can protrude through the cover 11 to the outside of the base 10. In this embodiment, the top surface of the cover plate 11 and the top surface of the base 10 are preferably coplanar for the sake of overall aesthetics.

The upper end of the button 12 is cylindrical, the upper end of the button 12 is provided with an annular limiting groove 121, and the annular limiting groove 121 is matched with the waterproof sleeve 13, so that the waterproof sleeve 13 is sleeved on the button 12. Here, when the button 12 is assembled with the base 10, the cylindrical portion protrudes outward from the cover 11, and an operator or other driving means drives the upper end of the button 12, thereby achieving the communication and disconnection effects.

The two sliding portions 122 are respectively arranged on two sides of the lower end of the button 12, and the two sliding portions 122 respectively slide on the two second sliding grooves 1012, so that the effect that the button 12 vertically slides up and down relative to the accommodating cavity 101 is achieved. Further, in order to ensure that the sliding part 122 can better achieve the sliding effect during the sliding process, in the present embodiment, a chamfer is preferably provided on the bottom end of the sliding part 122.

The button 12 is provided with a first fixing cavity 123 and a second fixing cavity 124, the first fixing cavity 123 and the second fixing cavity 124 are vertically communicated, and the cross-sectional dimension of the first fixing cavity 123 is larger than that of the second fixing cavity 124, so that the connecting part of the first fixing cavity 123 and the second fixing cavity 124 is also stepped.

The first fixing chamber 123 is located below the second fixing chamber 124, and the first fixing chamber 123 extends through the entire button 12 in a downward direction. The sidewall of the first fixing cavity 123 is provided with a front opening 1231 and a rear opening 1232, the front opening 1231 and the rear opening 1232 both penetrate the whole button 12 downward, and the front opening 1231 and the rear opening 1232 are symmetrically disposed for realizing the installation effect of the conductive member 16. The front opening 1231, the rear opening 1232 and the two sliding portions 122 are not located on the same side wall. Here, the front opening 1231 and the rear opening 1232 have the same structure, so that only one of the openings is described here. A side wall of the front opening 1231 is provided with a first limiting protrusion 124, a corresponding side surface is provided with a second limiting protrusion 125, the first limiting protrusion 124 protrudes towards the middle of the front opening 1231, the first limiting protrusion 124 comprises a first inclined surface 1241, a first plane 1242 and a first limiting surface 1243, the first inclined surface 1241 is located below the first limiting protrusion 124, the first inclined surface 1241 is connected with the first limiting surface 1243 through a first plane 1242, the first plane 1242 is arranged in a vertical horizontal plane, the first limiting surface 1243 is arranged in parallel with the horizontal plane, and therefore the first plane 1242 and the first limiting surface 1243 form a vertical connection. The first limiting surface 1243 is located on the motion track of the conductive member 16.

Second limiting protrusion 125 also extends towards first limiting protrusion 124, and second limiting protrusion 125 is different from first limiting protrusion 124 in that second limiting protrusion 125 is rectangular, and the length of the side wall of second limiting protrusion 125 is greater than the length of first plane 1242, so that second limiting protrusion 125 cooperates with the side wall of front opening 1231 to form first channel 1251, second limiting protrusion 125 cooperates with first plane 1242 to form second channel 1252, first channel 1251 communicates with second channel 1252, and the size of first channel 1251 is greater than the size of second channel 1252. With the arrangement of the first channel 1251 and the second channel 1252, a guiding installation effect of the whole is further improved, and the conductive member 16 is prevented from sliding out of the first fixing cavity 123. It should be noted that the first limiting surface 1243 and the top surface of the second limiting protrusion 125 are coplanar, and both of them together form a limiting fixing effect of the conductive member 16.

In the installation process, the conductive piece 16 firstly slides along the first channel 1251 and then slides into the second channel 1252 through the first inclined plane 1241, due to the guiding effect of the first inclined plane 1241, the conductive piece 16 slides into the first fixing cavity 123 on the first plane 1242, after the conductive piece 16 enters into the first fixing cavity 123, a fixing effect is formed, and the first limiting plane 1243 is located on the movement track of the conductive piece 16, so that a limiting and fixing effect is realized.

It should also be noted that the first fixing cavity 123 is preferably cylindrical in shape, so that the first restoring member 17 can better achieve a guiding and supporting effect.

The second fixing cavity 124 is located above the first fixing cavity 123, and the cross-sectional dimension of the second fixing cavity 124 is smaller than that of the first fixing cavity 123. The second fixing cavity 124 is communicated with the first fixing cavity 123 only at the lower end, the rest positions are closed, the second reset piece 18 is located in the second fixing cavity 124, and the second reset piece 18 is abutted to the top surface of the second fixing cavity 124.

The waterproof jacket 13 is integrally arranged in a frustum shape, the waterproof jacket 13 is integrally sleeved on the button 12, and preferably, the top end of the waterproof jacket 13 is embedded into the annular limiting groove 121, so that a basic positioning and fixing effect is realized. The lower end of the waterproof jacket 13 is fixed in the first cavity 1021, and then the cover plate 11 is buckled with the base 10, so that the fixing effect of the waterproof jacket 13 is realized. The waterproof cover 13 is preferably made of rubber.

The first conductive plate 14 and the second conductive plate 15 have the same structure, and the vertical up-and-down reciprocating motion of the conductive member 16 realizes the effect of electrical connection or disconnection between the first conductive plate 14 and the second conductive plate 15. The first conductive plate 14 and the second conductive plate 15 are arranged in parallel, and both parts of the first conductive plate and the second conductive plate are fixed in the accommodating cavity 101, and the rest parts of the first conductive plate and the second conductive plate penetrate out of the base 10, so that a communication effect between the outside and the inside is realized. Here, the structures of both are the same, and therefore, only the structure of one of the conductive sheets will be described.

The first conductive sheet 14 includes a fixing portion 141 and a lead portion 142, the fixing portion 141 is connected to the lead portion 142 and is integrally formed, the first conductive sheet 14 is 7-shaped, the fixing portion 141 includes a top end and a portion of the 7-shaped, the fixing portion 141 is located in the accommodating cavity 101 for fixing, and in this embodiment, preferably, the fixing portion 141 is fixed in the fixing groove 1013. The fixing portion 141 is provided with an arched notch 143 facing downward, the arched notch 143 is located on a vertical upward movement track of the conductive component 16, it should be noted that the arched notch 143 does not extend into the fixing groove 1013, and is arranged in a suspended manner, so as to achieve an electrical connection effect with the conductive component 16. Those skilled in the art may also add a guide surface or structure to the structure to allow the conductive member 16 to enter the arcuate notch 143 better.

The pin part 142 partially extends out of the base 10, and the structure of the pin extending out of the base 10 may be a pin type or a patch type, and those skilled in the art may select different modes according to actual requirements. Further, in order to improve the connection strength between the lead part 142 and the base 10, a barb structure may be further added to the lead part 142. The lead portion 142 enters the accommodating cavity 101 from the upper opening 102 and then protrudes from the bottom surface of the base 10, so that the electrical connection between the first conductive sheet 14 and the second conductive sheet 15 is realized. In addition, the first conductive sheet 14 and the second conductive sheet 15 may be integrally injection-molded with the base 10, so as to improve the connection stability between the two.

The conductive member 16 is cylindrical, and is horizontally fixed in the accommodating cavity 101 and vertically slides up and down relative to the accommodating cavity 101, and two ends of the conductive member 16 respectively slide in the first sliding grooves 1011. After the assembly is completed, the lower end of the conductive element 16 is fixedly connected with the sealing plate 19 through the first resetting element 17, and the upper end of the conductive element 16 is fixedly connected with the top surface of the second fixing cavity 124 through the second resetting element 18, so that a clamping and fixing effect is achieved. In order to reduce the frictional resistance, in the embodiment, the two ends of the conductive element 16 do not abut against the first sliding slot 1011, and the conductive element 16 slides into the first fixing cavity 123 during the installation of the conductive element 16, where it should be noted that the conductive element 16 is only partially located in the first fixing cavity 123, and the two ends of the conductive element 16 extend out from the front opening 1231 and the rear opening 1232, and the two ends of the conductive element extend out to slide on the first sliding slot 1011. Meanwhile, the arched notch 143 is located on the vertical upward movement track of the conductive component 16, and the first limiting surface 1243 is located on the vertical downward movement track of the conductive component 16, so that the stroke distance of the conductive component 16 is limited.

In the normal state, the conductive member 16 is located in the arch-shaped notch 143, so that the electrical connection between the first conductive plate 14 and the second conductive plate 15 is achieved. When the button 12 is pressed to move the conductive member 16 vertically downward, the first conductive plate 14 and the second conductive plate 15 are in a breaking state. Meanwhile, due to the limiting effect of the first limiting surface 1243, the conductive component 16 cannot move excessively.

One end of the first resetting piece 17 abuts against the conductive piece 16, the other end of the first resetting piece abuts against the sealing plate 19, and the first resetting piece 17 is sleeved on the fixing column of the sealing plate 19. The first reset element 17 mainly acts as a reset effect of the button 12 so that the conductive element 16 can be reset quickly. Here, the first reset part 17 partially extends into the first fixed cavity 123, so that the first reset part 17 abuts against the conductive part 16, and the first reset part 17 partially extends into the first fixed cavity 123, so that the first reset part 17 forms a certain guiding and supporting effect, and the first reset part 17 is prevented from deviating in the using process. In this embodiment, the first restoring member 17 is preferably a straight spring.

The second restoring member 18 is located in the second fixing cavity 124, one end of the second restoring member 18 abuts against the top surface of the second fixing cavity 124, and the other end abuts against the conductive member 16. In this embodiment, the second restoring member 18 has a size smaller than that of the first restoring member 17. Adopt the setting of the second piece 18 that resets for under normal condition, the guide is connected with first conducting strip 14, second conducting strip 15, and here if the mistake bumps or normal shake appears, leads to button 12 to take place slight pushing down, because the effect of the second piece 18 that resets, button 12 has certain buffering stroke, and button 12 takes place slight pushing down the operation, can not make first conducting strip 14 and second conducting strip 15 disconnection, thereby ensures to continue to work under normal condition, can not take place the maloperation phenomenon. Here, the second restoring member 18 is also a straight spring. The buffer range of the buffer stroke is 5-20 filaments.

In this embodiment, the first reset element 17 and the second reset element 18 are coaxially disposed. First piece 17 that resets and second 18 that resets adopt coaxial axle center setting, and both cooperations form the effect that the double buffering resets, improve holistic life and the efficiency that resets.

A closure plate 19 is provided to close the lower opening 103. The sealing plate 19 is provided with a first positioning protrusion 191, a second positioning protrusion 192 and fixing posts 193, the first positioning protrusion 191 and the second positioning protrusion 192 are both located on the side wall of the sealing plate 19, the first positioning protrusion 191 is matched with the first notch 1032, and the second positioning protrusion 192 is matched with the second notch 1033. Fixed column 193 is shrouding 19 towards holding chamber 101 one side on, fixed column 193 is used for the cover of the first piece 17 that resets to establish the supporting effect, improves the fixed strength of the first piece 17 that resets.

The closing plate 19 is used for closing the lower opening 103, and the closing plate 19 and the lower opening 103 can be in snap connection, and a snap effect is formed by the snap protrusions; the sealing plate 19 and the lower opening 103 can be fused into an integral structure by laser welding; the sealing plate 19 and the lower opening 103 can be fused together to form an integral structure by ultrasonic fusion welding. In this embodiment, in order to improve the sealing level between the sealing plate 19 and the lower opening 103, laser welding is preferably adopted, so that a sealing effect is achieved, and the overall protection level is improved. During laser welding, can make shrouding 19 and lower open-end 103 firmly fixed through frock clamp, prevent that first piece 17 that resets energy storage from releasing for shrouding 19 and lower open-end 103 separation.

Firstly, connecting and fixing a first conducting strip 14 and a second conducting strip 15 with a base 10, then partially extending a button 12 into an accommodating cavity 101, simultaneously sleeving a waterproof sleeve 13 on the button 12, and connecting and fixing the button 12 with an upper opening 102 through a cover plate 11 to form a closed and fixed effect of the upper opening 102; next, the second reset piece 18 is installed from the lower opening 103 of the base 10, the second reset piece 18 is installed in the second fixed cavity 124, the conductive piece 16 is installed in the first fixed cavity 123, the first reset piece 17 is continuously installed in the accommodating cavity 101, one end of the first reset piece 17 abuts against the conductive piece 16, the lower opening 103 is sealed through the sealing plate 19, the sealing plate 19 is fixed with the lower opening 103 through laser welding, and therefore a complete installation effect is achieved.

By adopting the structure, two operation steps are formed, after the two conducting strips are fixed, the upper opening 102 is installed firstly, and under the action of gravity, the button 12 and the waterproof sleeve 13 can quickly realize an installation effect, and the fixing effect among the button 12, the waterproof sleeve 13 and the base 10 can be realized through the cover plate 11. After upper shed 102 installation is accomplished, with the whole 180 of overturning of base 10, the installation of lower shed 103 is carried out, this moment because the action of gravity, button 12 can perpendicular downstream, the flow space in holding chamber 101, reset piece 18 with the second again, electrically conductive piece 16, first piece 17 that resets progressively installs, in the installation, the second resets 18, first piece 17 that resets is under the action of gravity, can install the effect fast, for various problems among the prior art, under this kind of condition, from the mode of installing respectively in upper and lower both ends, holistic installation effectiveness has been improved, operating personnel's the work degree of difficulty is reduced, and simultaneously, this kind of installation effectiveness, can also be applicable to automation mechanized operation, can directly replace the manual work, the efficiency of assembly has further been increased.

Claims (10)

1. The utility model provides a brake crank power-off switch which characterized in that: including the base, the apron, the button, first conducting strip and second conducting strip fixed with the base, electrically conductive piece, first piece and the shrouding that resets, be equipped with in the base, the chamber that holds of under shed, the apron is connected fixedly with the under shed, the button passes the apron and stretches into to holding the intracavity, the button lower extreme is connected with first piece that resets through electrically conductive piece, first conducting strip is 7 types with the second conducting strip, first conducting strip all is located the movement track of electrically conductive piece with the second conducting strip, first piece one end that resets offsets with electrically conductive piece, the other end offsets with the shrouding, the shrouding is connected fixedly with the under shed.

2. A lever disconnector according to claim 1, characterized in that: the side wall of the accommodating cavity is provided with two first sliding chutes which are symmetrically arranged, and two ends of the conductive piece slide in the first sliding chutes.

3. The brake crank power-off switch of claim 1, wherein: the lateral wall of the containing cavity is provided with two symmetrically arranged second sliding grooves, and the button is provided with a sliding part matched with the second sliding grooves.

4. The brake crank power-off switch of claim 1, wherein: the button is provided with a first fixing cavity, the conductive part is positioned in the first fixing cavity, and the first reset part extends into the first fixing cavity and abuts against the conductive part.

5. The brake crank disconnect switch of claim 4, wherein: the first fixing cavity is provided with a first limiting bulge, and the first limiting bulge is positioned on the motion trail of the conductive piece.

6. The brake lever power-off switch of claim 5, wherein: the first limiting protrusion comprises a first inclined plane, a first plane and a first limiting surface, the first inclined plane is connected with the first limiting surface through the first plane, and the first limiting surface is located on the motion track of the conductive piece.

7. The brake crank power-off switch as claimed in claim 5 or 6, wherein: the first fixing cavity is provided with a second limiting protrusion, the second limiting protrusion is matched with the side wall where the first limiting protrusion is located to form a first channel, the second limiting protrusion is matched with the first limiting protrusion to form a second channel, the first channel is communicated with the second channel, and the size of the first channel is larger than that of the second channel.

8. A lever disconnector according to claim 1, characterized in that: be equipped with first location arch on the shrouding, be equipped with first breach on the under shed, first location arch stretches into in the first breach.

9. The brake lever power-off switch of claim 8, wherein: the sealing plate is provided with a second positioning protrusion, the lower opening is provided with a second notch, and the second positioning protrusion extends into the second notch.

10. A lever disconnector according to claim 1, characterized in that: the sealing plate is provided with a fixing column, and the first resetting piece is sleeved on the fixing column.

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