CN210223804U - Brake lamp switch - Google Patents

Abstract

The utility model relates to a stop lamp switch, which comprises a body, the inner shell, ejector pin and contact assembly, ejector pin endwise slip sets up in the body can be followed to the inner shell, the ejector pin is connected and is used for driving the inner shell to slide above the inner shell, still be equipped with the piece that resets that is used for the inner shell that resets in the body, contact assembly is including static contact and moving contact, contact assembly is still including the flexure strip, the lower extreme of flexure strip is fixed on the body, the moving contact sets up the upper end of stating the flexure strip, the moving contact contacts with the static contact under the effect of flexure strip, be provided with wear-resisting cover on the flexure strip, be equipped with the kicking block on the inner shell. The utility model provides a stop lamp switch, on the kicking block that sliding contact's frictional force was converted into wear-resisting cover and inner shell about with moving contact and static contact, there was not relative slip when moving contact and static contact break-make state, avoided sliding contact's friction and electric spark's production about both, the long service life of contact, more than 200 ten thousand.

Description

Brake lamp switch

Technical Field

The utility model relates to an automobile brake system technical field especially relates to a stop lamp switch.

Background

The brake lamp switch is generally disposed on a brake pedal of a vehicle, and turns on or off a brake lamp circuit by pressing or releasing the brake pedal to turn on or off the brake lamp, thereby alerting a vehicle behind. In the prior art, the brake lamp switch is switched on and off by the contact of the moving contact and the fixed contact through the up-and-down movement of the moving contact, and in the process of the up-and-down movement of the moving contact and the contact of the fixed contact, a large friction force is generated, the contact is greatly abraded, and electric sparks generated during the friction between the moving contact and the fixed contact can ablate the surface of the contact, so that the service life of the contact is shortened under the double loads of sliding friction and electric spark ablation, and only 100 ten thousand times is needed.

Disclosure of Invention

The utility model aims at: in order to overcome prior art's defect, the utility model provides a stop lamp switch is on the kicking block that sliding contact's frictional force was converted into wear-resisting cover and inner shell about moving contact and static contact (moving contact and static contact part and laminating realization break-make), does not have relative slip when moving contact and static contact on-off state, has avoided sliding contact's friction and electric spark's production about both, and the long service life of contact is more than 200 ten thousand.

The technical scheme of the utility model: a brake lamp switch comprises a body, an inner shell, a push rod and a contact assembly, wherein the inner shell can be arranged in the body in an axial sliding mode along the push rod, the push rod is connected to the upper portion of the inner shell and used for driving the inner shell to slide, a reset piece used for resetting the inner shell is further arranged in the body, the contact assembly comprises a first fixed contact and a first moving contact which are correspondingly arranged, the contact assembly further comprises a first elastic sheet, the lower end of the first elastic sheet is fixed to the body, the first moving contact is arranged at the upper end of the first elastic sheet, the first moving contact is in contact with the first fixed contact under the action of the first elastic sheet, a first wear-resistant sleeve is arranged on the first elastic sheet, a first push block is arranged on the inner shell, and the first push block is abutted against the first wear-resistant sleeve to separate the first fixed contact from the first moving contact.

By adopting the technical scheme, the first wear-resistant sleeve on the first elastic sheet is in sliding contact with or separated from the first ejector block on the inner shell, so that the first moving contact is separated from or contacted with the first static contact, the on-off of the switch is realized, the friction force of the first moving contact and the first static contact in up-and-down sliding contact is converted onto the first ejector block of the first wear-resistant sleeve and the inner shell, the first moving contact and the first static contact do not slide relatively when in an on-off state, the friction of the first moving contact and the first static contact in up-and-down sliding contact and the generation of electric sparks are avoided, the service life of the contact is long, and the contact.

The utility model discloses a further setting: the inner wall of the body is provided with a guide groove, the guide groove extends along the axial direction of the ejector rod, the outer wall of the inner shell is provided with a guide block, the guide block is arranged in the guide groove in a sliding mode, and the bottom wall of the guide groove is provided with a ventilating long groove along the length direction of the guide groove.

By adopting the further arrangement, the guide block slides in the guide groove to form the guide for the inner shell to slide along the axial direction of the ejector rod, and the long ventilation groove is arranged on the bottom wall of the guide groove along the length direction of the guide groove, so that the guide block is not completely attached to the bottom wall of the guide groove, the air resistance of the inner shell in the movement process is reduced, and the service life of the inner shell is prolonged.

The utility model discloses a further setting again: the contact assembly further comprises a second fixed contact, a second moving contact and a second elastic sheet, the second fixed contact and the second moving contact are correspondingly arranged, the lower end of the second elastic sheet is fixed on the body, the second moving contact is arranged at the upper end of the second elastic sheet, the second moving contact is contacted with the second fixed contact under the action of the second elastic sheet, a second wear-resistant sleeve is arranged on the second elastic sheet, a second ejector block is arranged on the inner shell, the second ejector block is abutted against the second wear-resistant sleeve to separate the first fixed contact from the first moving contact, the second wear-resistant sleeve and the first wear-resistant sleeve are arranged side by side, and the first ejector block and the second ejector block are arranged one above the other along the axial direction of the ejector rod.

By adopting the above further arrangement, two groups of correspondingly arranged static contacts and moving contacts are provided for the signal collector to collect, and the switch generates two different on-off signals in the downward or upward process of the inner shell, so that the problems of unstable signal source, easy abrasion and high contact failure rate when only one group of static and moving contacts is provided are avoided.

When a driver does not step on a brake pedal, the first fixed contact and the first moving contact are contacted under the action of the first elastic sheet, the second top block on the inner shell is contacted with the second wear-resistant sleeve on the second elastic sheet to separate the second fixed contact from the second moving contact, the brake lamp circuit is disconnected, and the brake lamp is extinguished; when a driver steps on a brake pedal, the ejector rod drives the inner shell to slide downwards, the second ejector block on the inner shell is separated from the second wear-resistant sleeve on the second elastic sheet, the second fixed contact is contacted with the second moving contact under the action of the second elastic sheet, the first ejector block on the inner shell is contacted with the first wear-resistant sleeve on the first elastic sheet, the first fixed contact is contacted with the first moving contact, the resetting piece is stressed, the brake lamp circuit is communicated at the moment, and the brake lamp is lightened.

The utility model discloses a still further set up: the first fixed contact and the first moving contact are arranged in a strip shape and are perpendicular to each other, and the second fixed contact and the second moving contact are arranged in a strip shape and are perpendicular to each other.

By adopting the above further arrangement, the static contact and the moving contact are arranged in a staggered manner in the sliding direction, so that the contact distance between the two opposite contacts is lengthened, the contact of the two contacts has corresponding tolerance, and the make-up rate is high.

The utility model discloses a still further set up: the novel wear-resistant sleeve is characterized in that a first clamping groove and a second clamping groove are arranged in the body side by side, the lower end of a first elastic sheet is clamped in the first clamping groove, the front end of a first wear-resistant sleeve is fixedly connected with the first elastic sheet, the rear end of the first wear-resistant sleeve is provided with a first protrusion, a first ejecting block is arranged on the front side face of the inner shell, the lower end of a second elastic sheet is clamped in the second clamping groove, the front end of the second wear-resistant sleeve is fixedly connected with the second elastic sheet, the rear end of the second wear-resistant sleeve is provided with a second protrusion, and a second ejecting block is arranged on the front side face of the inner shell.

Adopt above-mentioned further setting again, the assembly structure of first flexure strip and second flexure strip is simple, and all is equipped with the arch on first flexure strip and the second flexure strip, is convenient for contradict with the kicking block and cooperate.

The utility model discloses a still further set up: the outer wall of the ejector rod is sequentially provided with a plurality of helical teeth at intervals along the axial direction of the ejector rod, the inner wall of the inner shell is provided with clamping teeth, and the clamping teeth are clamped on the helical teeth to realize the fixed connection of the ejector rod and the inner shell.

By adopting the above further arrangement, the inner shell and the ejector rod are meshed through the latch and the helical teeth to realize the switch stopping force, the switch stopping force value is 22-60N and is far greater than the matching operating force of the switch and the pedal, and the inner shell moves along with the ejector rod without generating relative displacement in the use process of the switch.

The utility model discloses a still further set up: the body including the base, set up at the mounting bracket of base top and the shell of cover at the mounting bracket periphery, the mounting bracket insert and establish on the base, the shell is connected with the base buckle, the contact subassembly set up on the mounting bracket, the guide way sets up on the shell inner wall.

By adopting the above further arrangement, the body has a simple structure, and is convenient for processing and assembling various parts.

The utility model discloses a still further set up: the base upper end is equipped with plug-in components, the piece that resets be the spring, the pot head is established on the plug-in components under the spring, contradicts on the inner shell spring upper end.

By adopting the above further arrangement, the spring is convenient to install, is not easy to deviate, and has large acting force for resetting the inner shell.

Drawings

FIG. 1 is a block diagram of an embodiment of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a cross-sectional view taken in the direction A-A of FIG. 2, wherein the direction indicated by the arrow a is upward;

fig. 4 is a structural view of the embodiment of the present invention with the outer shell removed, wherein the direction indicated by the arrow b is upward and forward;

fig. 5 is a structural diagram of one side of the first fixed contact and the second fixed contact in the embodiment of the present invention;

fig. 6 is a structural diagram of one side of the first movable contact and the second movable contact according to an embodiment of the present invention;

FIG. 7 is a diagram illustrating the structure of the inner shell according to an embodiment of the present invention;

FIG. 8 is a view of the latch side of the inner shell according to an embodiment of the present invention;

FIG. 9 is a diagram of the housing according to an embodiment of the present invention;

fig. 10 is a structural diagram of a base according to an embodiment of the present invention.

The device comprises a body 1, an inner shell 2, a push rod 3, a contact assembly 4, a reset piece 5, a first fixed contact 41, a first moving contact 42, a first elastic sheet 43, a first wear-resistant sleeve 6, a first ejector block 7, a second fixed contact 81, a second moving contact 82, a second elastic sheet 83, a second wear-resistant sleeve 9, a second ejector block 10, a first clamping groove 11, a second clamping groove 12, a first protrusion 61, a second protrusion 91, a base 13, an installation frame 14, an outer shell 15, an insert 16, a guide groove 17, a guide block 18, a ventilation long groove 19, an oblique tooth 31 and a latch 21.

Detailed Description

The technical solutions in the embodiments will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indications (such as up, down, front, and back … …) in the description of the present invention are only used to explain the relative position relationship between the components, the movement, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a number" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1-10, the utility model discloses a brake light switch, including body 1, inner shell 2, ejector pin 3 and contact assembly 4, inner shell 2 can be along ejector pin 3 axial slip setting in body 1, ejector pin 3 is connected and is used for driving inner shell 2 to slide above inner shell 2, still be equipped with in the body 1 and be used for reseing the reset piece 5 of inner shell 2, contact assembly 4 include first static contact 41 and the first moving contact 42 that sets up correspondingly, contact assembly 4 still include first flexure strip 43, the lower extreme of first flexure strip 43 is fixed on body 1, first moving contact 42 sets up the upper end at first flexure strip 43, first moving contact 42 under the effect of first flexure strip 43 with first static contact 41 contact, first flexure strip 43 on be provided with first wear-resistant cover 6, be equipped with first kicking block 7 on inner shell 2, the first top block 7 is abutted against the first wear-resistant sleeve 6 to separate the first fixed contact 41 from the first movable contact 42; the contact assembly 4 further includes a second fixed contact 81, a second movable contact 82 and a second elastic sheet 83, the second fixed contact 81 and the second movable contact 82 are correspondingly disposed, a lower end of the second elastic sheet 83 is fixed on the body 1, the second movable contact 82 is disposed at an upper end of the second elastic sheet 83, the second movable contact 82 contacts with the second fixed contact 81 under the action of the second elastic sheet 83, a second wear-resistant sleeve 9 is disposed on the second elastic sheet 83, a second ejector block 10 is disposed on the inner shell 2, the second ejector block 10 is abutted against the second wear-resistant sleeve 9 to separate the second fixed contact 81 from the second movable contact 82, the second wear-resistant sleeve 9 is disposed side by side with the first wear-resistant sleeve 6, and the first ejector block 7 and the second ejector block 10 are disposed one above the other along the axial direction of the ejector rod 3; the first fixed contact 41 and the first movable contact 42 are arranged in a strip shape and are perpendicular to each other, and the second fixed contact 81 and the second movable contact 82 are arranged in a strip shape and are perpendicular to each other; a first clamping groove 11 and a second clamping groove 12 are arranged in the body 1 side by side, the lower end of a first elastic sheet 43 is clamped in the first clamping groove 11, the front end of a first wear-resistant sleeve 6 is fixedly connected with the first elastic sheet 43, a first bulge 61 is arranged at the rear end of the first wear-resistant sleeve 6, a first ejector block 7 is arranged on the front side surface of the inner shell 2, the lower end of a second elastic sheet 83 is clamped in the second clamping groove 12, the front end of a second wear-resistant sleeve 9 is fixedly connected with the second elastic sheet 83, a second bulge 91 is arranged at the rear end of the second wear-resistant sleeve 9, and a second ejector block 10 is arranged on the front side surface of the inner shell 2; the body 1 comprises a base 13, a mounting frame 14 arranged above the base 13 and a shell 15 sleeved on the periphery of the mounting frame 14, the mounting frame 14 is inserted on the base 13, the shell 15 is connected with the base 13 in a buckling mode, and the contact assembly 4 is arranged on the mounting frame 14; plug-in components 16 are arranged at the upper end of the base 13, the reset components 5 are springs, the lower end of each spring 5 is sleeved on the plug-in components 16, and the upper end of each spring 5 abuts against the inner shell 2. When a driver does not step on a brake pedal, the first fixed contact 41 and the first movable contact 42 are contacted under the action of the self elasticity of the first elastic sheet 43, the second top block 10 on the inner shell 2 props against the second bulge 91 at the rear end of the second wear-resistant sleeve 9 of the second elastic sheet 83, the upper end of the second elastic sheet 83 is stressed to move forwards, so that the second movable contact 82 is separated from the second fixed contact 81 forwards, the circuit of the brake lamp is disconnected, and the brake lamp is extinguished; when a driver steps on a brake pedal, the ejector rod 3 drives the inner shell 2 to slide downwards, the second ejector block 10 on the inner shell 2 is separated from the second protrusion 91 at the rear end of the second wear-resistant sleeve 9 of the second elastic sheet 83, the second movable contact 82 is contacted with the second fixed contact 81 backwards under the action of the self elasticity of the second elastic sheet 83, the spring 5 is stressed, the first ejector block 7 on the inner shell 2 props against the first protrusion 61 at the rear end of the first wear-resistant sleeve 6 of the first elastic sheet 43, the upper end of the first elastic sheet 43 is stressed to move forwards, so that the first movable contact 42 is separated from the first fixed contact 41 forwards, the brake lamp circuit is communicated at the moment, and the brake lamp is lightened; when a driver releases a brake pedal, the spring 5 drives the inner shell 2 to slide upwards and return to an initial position, the first ejector block 7 on the inner shell 2 is separated from the first protrusion 61 at the rear end of the first wear-resistant sleeve 6, the first movable contact 42 is backwards contacted with the first fixed contact 41 under the action of the self elasticity of the first elastic sheet 43, the second ejector block 10 on the inner shell 2 is abutted against the second protrusion 91 of the second wear-resistant sleeve 9, the upper end of the second elastic sheet 83 is stressed to move forwards, so that the second movable contact 82 is forwards separated from the second fixed contact 81, a brake lamp circuit is disconnected, and the brake lamp is extinguished.

The wear-resistant sleeve of the elastic sheet is in sliding contact or separation with the corresponding top block on the inner shell, so that the moving contact and the static contact which are correspondingly arranged are separated or contacted, the on-off of the switch is realized, the friction force of the up-and-down sliding contact of the moving contact and the static contact is converted onto the top blocks of the wear-resistant sleeve and the inner shell (the moving contact and the static contact are separated and attached to realize the on-off), the moving contact and the static contact do not slide relatively when in the on-off state, the friction of the up-and-down sliding contact of the moving contact and the static contact and the generation of electric; and the static contact and the moving contact are provided with two groups, so that the switch generates two different on-off signals in the downward or upward process of the inner shell, thereby avoiding the problems of unstable signal source, easy abrasion and higher contact failure rate when only one group of the moving contact and the moving contact is arranged.

Specifically, the surfaces of the moving contact and the static contact are plated with gold, so that the switch-on effect of the switch is improved.

The utility model discloses a concrete embodiment, 15 inner walls of shell are provided with guide way 17, guide way 17 along 3 axial extensions of ejector pin, be provided with guide block 18 on the 2 outer walls of inner shell, guide block 18 slides and sets up in guide way 17, guide way 17 diapire on be equipped with ventilative elongated slot 19 along its length direction. The guide block 18 slides in the guide groove 17 to form guide for the inner shell 2 to slide along the axial direction of the ejector rod 3, and the long ventilation groove 19 is formed in the bottom wall of the guide groove 17 along the length direction of the guide groove, so that the guide block 18 is not completely attached to the bottom wall of the guide groove 17, the air resistance of the inner shell 2 in the movement process is reduced, and the service life of the inner shell 2 is prolonged.

The utility model discloses a specific embodiment, 3 outer walls of ejector pin along its axial interval in proper order be provided with a plurality of skewed teeth 31, be provided with latch 21 on the 2 inner walls of inner shell, latch 21 card is established and is realized ejector pin 3 and inner shell 2's fixed connection on skewed teeth 31. The inner shell 2 and the ejector rod 3 are meshed with the helical teeth 31 through the latch 21, switch stopping force is achieved, the switch stopping force value is 22-60N and is far larger than matching operating force of a switch and a pedal, and in the switch using process, the inner shell 3 moves along with the ejector rod 3 and does not generate relative displacement.

Specifically, the inner shell 2 is made of a POM material, has high fatigue resistance, high rigidity, high elastic modulus and high hardness, and has better wear resistance and certain strength for meeting the requirement of stopping force.

Claims (8)

1. A brake lamp switch comprises a body, an inner shell, a push rod and a contact assembly, wherein the inner shell can be arranged in the body in an axial sliding mode along the push rod, the push rod is connected above the inner shell and used for driving the inner shell to slide, a reset piece used for resetting the inner shell is further arranged in the body, the contact assembly comprises a first fixed contact and a first moving contact which are correspondingly arranged, the contact assembly is characterized by further comprising a first elastic sheet, the lower end of the first elastic sheet is fixed on the body, the first moving contact is arranged at the upper end of the first elastic sheet, the first moving contact is in contact with the first fixed contact under the action of the first elastic sheet, a first wear-resistant sleeve is arranged on the first elastic sheet, a first ejecting block is arranged on the inner shell, and the first ejecting block is abutted against the first wear-resistant sleeve to separate the first fixed contact from the first moving contact.

2. The stop lamp switch according to claim 1, wherein the inner wall of the body is provided with a guide groove extending along the axial direction of the push rod, the outer wall of the inner shell is provided with a guide block, the guide block is slidably arranged in the guide groove, and the bottom wall of the guide groove is provided with a ventilation elongated groove along the length direction thereof.

3. The stop lamp switch according to claim 1 or 2, wherein the contact assembly further comprises a second fixed contact, a second movable contact and a second elastic sheet, the second fixed contact and the second movable contact are disposed correspondingly, a lower end of the second elastic sheet is fixed on the body, the second movable contact is disposed at an upper end of the second elastic sheet, the second movable contact is in contact with the second fixed contact under the action of the second elastic sheet, a second wear-resistant sleeve is disposed on the second elastic sheet, a second ejector block is disposed on the inner shell, the second ejector block abuts against the second wear-resistant sleeve to separate the first fixed contact from the first movable contact, the second wear-resistant sleeve and the first wear-resistant sleeve are disposed side by side, and the first ejector block and the second ejector block are disposed one above the other along the axial direction of the ejector rod.

4. The stop lamp switch according to claim 3, wherein the first stationary contact and the first movable contact are disposed in a bar shape and perpendicular to each other, and the second stationary contact and the second movable contact are disposed in a bar shape and perpendicular to each other.

5. The stop lamp switch according to claim 4, wherein the body is provided with a first clamping groove and a second clamping groove side by side, a lower end of the first elastic piece is clamped in the first clamping groove, a front end of the first wear-resistant sleeve is fixedly connected with the first elastic piece, a rear end of the first wear-resistant sleeve is provided with a first protrusion, the first top block is arranged on a front side surface of the inner shell, a lower end of the second elastic piece is clamped in the second clamping groove, a front end of the second wear-resistant sleeve is fixedly connected with the second elastic piece, a rear end of the second wear-resistant sleeve is provided with a second protrusion, and the second top block is arranged on a front side surface of the inner shell.

6. The stop lamp switch according to claim 5, wherein the outer wall of the ejector rod is sequentially provided with a plurality of helical teeth at intervals along the axial direction, the inner wall of the inner shell is provided with a latch, and the latch is clamped on the helical teeth to realize the fixed connection of the ejector rod and the inner shell.

7. The stop lamp switch according to claim 6, wherein the body comprises a base, a mounting frame arranged above the base, and a housing sleeved on the periphery of the mounting frame, the mounting frame is inserted into the base, the housing is connected with the base in a buckling manner, the contact assembly is arranged on the mounting frame, and the guide groove is formed in the inner wall of the housing.

8. The stop lamp switch according to claim 7, wherein the upper end of the base is provided with an insert, the reset member is a spring, the lower end of the spring is sleeved on the insert, and the upper end of the spring abuts against the inner shell.

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