The electric switch


H01H13/18 - adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift

 

(57) Abstract:

The invention relates to electrical engineering, in particular to devices for switching electrical circuits, and can be used as a switch of a signal of braking of the vehicle. The technical result is to simplify installation of the electrical switch. The electric switch comprises a base with contacts and output connectors, an elongated cylindrical body with located therein screw-down stem, resulting in the action of the movable contacts, as well as the setup item in the form of a sleeve with a flange and a mounting device. At the elongated body along its axis and symmetrically arranged two sets of elements in the form of inclined transverse ribs separated by grooves. Each set of elements located on the casing contains two rows of ribs are inclined in different directions. Along the entire length of the body symmetrically arranged projections made in the form of strips of a semi-circular cross-section, located at the same distance from stencils. Sleeve installation parts provided along the entire length of the hole response itemsets in the form of inclined transverse ribs separated by grooves, and the ribs of each is. Just in the bore of the sleeve is made of four spaced pairs of reciprocal set of elements with alternating tilt of edges between pairs of response sets of elements symmetrically formed by three parallel grooves. 6 C.p. f-crystals, 13 ill.

The invention relates to electrical engineering, in particular to devices for switching electrical circuits, and can be used as a switch signal brake the vehicle.

Switch brake is installed, usually on the stationary bracket relative to the vehicle body [1], the drive rod of the switch interacts with the brake pedal. In the absence of effects pedal is in the idle state and utaplivaet spring-loaded output shaft of the switch, breaking the chain brake. In the released position, the pedal moves away from the switch, a rod which under the influence of its own spring comes out, closing the chain brake. Thus, the recessed position of the rod in the switch must be sufficiently definite so that, on the one hand, to provide a reliable disconnection of contacts, and with the other hand to prevent the destruction of the switch, which may occur from udaleniya switch, the slider of which, provided with movable contacts, friction is connected with a driving spring rod. When exposed to stock it continues to move in the hole of the slide and after closure of the movable and stationary contacts. After cessation of exposure to the stock together with the slide returns to its original position.

The design of this switch may be of low term reliable operation, since the frictional connection leads to wear of the friction pair of the slide - rod and spontaneous movement of the slide stem with the subsequent closure of the contacts.

In U.S. patent 4996400 (publ. 26.02.91 g) described self-regulating switch with automatic regulation of the length of the stroke, comprising a housing inside which is located a movable plunger associated with the contact device. The body is equipped with a device which selectively interacts with the plunger and prevents its axial movement relative to the housing upon actuation of the switch. At the end of the plunger has a cap, adjusting the position of which in the axial direction is carried out in a selective interaction of the device with the plunger. This keygen is rather reliable, because of its design there is no means of locking cap relative to the plunger, apart transverse slots, which cap overcomes the before installed in the specified position. If any of impacts on the cap will be more strong, then it can be more deeply impaled on the plunger and, thus, the switch functionally fails.

The prototype was taken UK application 2022320 (publ. 12.12.79,), which describes the electric switch containing base with contacts and output connectors, an elongated cylindrical body with located therein screw-down stem, resulting in the action of the movable contacts, as well as the setup item in the form of a sleeve with a flange and mounting petals. At the elongated body along its axis and symmetrically arranged two sets of elements in the form of transverse ribs separated by grooves. In addition, the casing along its length between sets of elements symmetrically located pair of protrusions. The hole in the bushing installation details provided throughout the length of the two reciprocal sets of elements in the form of transverse ribs separated by grooves. The sleeve opening is formed also excavation to install ledges, obrazovannye to the flange.

Transverse rib elements as in the case of the switch and the hole bushing installation details are made with a slight one-sided inclination.

The switch is attached to the bracket through the installation details entered into the hole of the bracket to lock the flange in its plane, while retaining the petals fix the item, preventing her exit hole of the bracket. Then from the side of the flange in the sleeve bore pressure rod is put forward the case of the switch until it engages in the device, the position of which is controlled, in particular in the brake pedal of the vehicle, which in its extreme release position. When the push rod retracts into the housing until, when the extreme point of the rod will be located in the same plane with the edge switch, and the sets of elements of the body are located near the itemsets sleeves, and rib elements of the body tilted to the side edges of the sleeve have the same slope.

For the final installation of the switch, the housing is rotated in the sleeve installation details in the direction of the entering edges of the shell elements in the grooves response itemsets in the sleeve to the setting of AMI on rails, formed by the grooves of the sleeve is shifted in the direction opposite to the direction of introduction of the body into the sleeve. At the same time under the action of its ejector spring from the housing by a distance equal to the inverse displacement hull, extends the push rod being in contact with the brake pedal of the vehicle.

However, in the condition of mass line production installation of the switch may cause certain difficulties, since the fastening of the housing of the circuit breaker in the plug installation part is turning your body in a certain direction. It has to be considered when designing the car and for training personnel.

The objective of the invention is to simplify installation of the electrical switch.

The specified task is in electrical breaker comprising a base with contacts and output connectors, an elongated cylindrical body with located therein screw-down stem, resulting in the action of the movable contacts, as well as the setup item in the form of a sleeve with a flange and a mounting device and the elongated body along its axis and symmetrically arranged two sets of elements in the form of inclined transverse ribs, a split groove the details provided along the entire length of the hole response itemsets in the form of inclined transverse ribs, separated by grooves, and the edges of the elements of the body are inclined towards the adjacent edges of the sleeve have the same slope, is solved in that each set of elements located on the casing contains two rows of ribs are inclined in different directions, the projections on the housing made in the form of strips of a semi-circular cross-section, located at the same distance from sets of elements in the bore of the sleeve is made of four spaced pairs of reciprocal set of elements with alternating inclination of the ribs, and between pairs of response sets of elements symmetrically formed by three parallel grooves.

The mounting device mounting parts are made preferably in the form of two elastic petals extending from the outer surface of the sleeve and facing the flange.

The installation part is formed mainly of two identical parts connected latches, located on the outer surface of the sleeve.

Average out of every three grooves in the sleeve of the installation parts you may have a semicircular cross-section, and at each groove having a V-shaped cross-section, preferably connected on one side with the ends of the ribs response of the stencil sleeve.

The rows of R are connected by an edge to edge or edge to the groove".

Given the set of features in comparison with the prior art allows to make a conclusion on the conformity of the proposed technical solution the condition of "novelty". At the same time, the set of distinctive features that lead to the solution of the problem, not obvious from the prior art, therefore, the claimed technical solution meets the condition of "inventive step".

The invention is illustrated by the following drawings: Fig.1 shows an electrical switch, side view; Fig.2 shows the installation of electrical switch near the brake pedal; Fig.3 shows the installation item in the axial view of Fig.4 Dan axial view of the housing of the switch from the side of the adjusting rod; Fig.5, 6 shows the mounting of the switch in the installation details: Fig.5 - initial position (introduction chassis switch installation detail), Fig.6 - final position (fixing chassis switch installation parts) of Fig.7 shows half of the installation details; Fig. 8 Dan view installation details from the side of one of the elastic petals; Fig.9 shows the connection of the two halves of the installation details; Fig. 10, 11 different variants of the mutual location of Abra joined on the type of "edge to edge"; in Fig.12 shows the inner surface of the sleeve installation details; Fig.13 shows a variant of the installation of the electrical switch near the brake pedal.

The electric switch comprises a base 1 with the contacts and lead plugs, elongated cylindrical body 2 located therein pressure rod 3, resulting in the action of the movable contacts, and an installation part 4 in the form of a sleeve 5 with the flange 6 and the fastening device. At the elongated body 2 along its axis and symmetrically arranged two sets of elements 7 in the form of inclined transverse ribs 8, separated by grooves 9. Each set of elements 7 located on the casing 2, contains two rows of ribs 8, tilted in different directions. Along the entire length of the housing 2 and symmetrically arranged projections 10, made in the form of strips of a semi-circular cross-section, located at the same distance from sets of elements 7. Sleeve 5 installation parts 4 provided along the entire length of the hole mating sets of elements 11 in the form of inclined transverse ribs 12 that are separated by grooves 13, and the edges 8 of each row of elements 7 of the housing 2 is inclined toward the adjacent ribs 12 elements 11 of the sleeve 5, having the same slope. Just in the bore of the sleeve 5 between pairs of response itemsets 11 symmetrically formed by three parallel grooves 14, 15, 16. The average 15 out of every three grooves 14, 15, 16 in the sleeve 5 installation parts 4 are predominantly semi-circular cross-section, and each extreme groove 14, 16 having a V-shaped cross-section, as a rule, is connected on one side with the ends of the ribs 12 of the response set of elements 11 of the sleeve 5. The mounting device mounting part 4 is made preferably in the form of two elastic petals 17 extending from the outer surface of the sleeve 5 and facing the flange 6. The installation part 4 may be formed from two identical parts (Fig. 7) connected by latches 18 located on the outer surface of the sleeve 5 (Fig.9). The preferred option, when a series of ribs 8 of each set of the elements 7 of the housing 2 are connected among themselves, for example, the type of "edge to edge" (Fig.11) or an edge to the groove" (Fig.10).

The switch is attached to the bracket 19 by means of the installation parts 4, introduced into the hole of the bracket 19 with one or the other side (Fig.2, 13) to the stop flange 6 in its plane, while the elastic petals 17 fixed part 4, preventing her exit hole of the bracket 19. Then in the sleeve bore 5 pressure rod 3 is put forward the case 2 of switch until it engages in the device, the position of which control the push rod 3 retracts into the housing 2 until, when the extreme point of the rod 3 will be located in the same plane with the end face of the housing 2 of the switch. Sets of elements 7 of the housing 2 are located next to the response sets of elements 11 of the sleeve 5, and the edges 8 of each row of elements 7 of the housing 2 is inclined toward the adjacent ribs 12 elements 11 of the sleeve 5, having the same slope (Fig.5). Simultaneously, the protrusions 10 of the body is placed in the middle of the semicircular grooves 15 of the sleeve 5 installation details 4.

For the final installation of the switch, the housing 2 is rotated in the sleeve 5 installation details 4 in any convenient installer direction. When this is set the same number of edges 8 of each element 7 of the housing 2 into the grooves 13 of the response sets of elements 11 in the sleeve 5, in the direction which is rotated until the stop edges 12 elements 11 of the sleeve 5 in the second row of ribs 8, tilted in the other direction (Fig.6). At the same time, the protrusions 10 of the body out of the secondary grooves 15 of the sleeve 5 installation parts 4 and are moved along the inner surface of the sleeve 5 before entering into the respective V-shaped grooves 14 or 16. The housing 2 of the switch, moving the ribs 8 in the guides formed by the grooves 13 of the sleeve 5, is shifted in the direction opposite to the direction of the call, equal to the inverse displacement of the housing 2, extends the push rod 3, while remaining in contact with the pedal 20 brakes of the vehicle. Since the backward movement of the body 2 in this design - the value of enough hard-coded, and the departure of the pressure rod 3 from the housing 2 also definite value, which may be associated steady state of the contact group, for example de-energise to specify free pedal 20 brakes. At the same time, when performing any action pedal 20 brake has no contact with the structural elements of the switch, in addition to the push rod 3.

Literature used:

1. The he, C. A. and other VAZ-2108. -M.: DOSAAF USSR, 1986, S. 174, Fig.84.

1. The electric switch containing base with contacts and output connectors, an elongated cylindrical body with located therein screw-down stem, resulting in the action of the movable contacts, as well as the setup item in the form of a sleeve with a flange and a mounting device and the elongated body along its axis and symmetrically arranged two sets of elements in the form of inclined transverse ribs separated by grooves, and along the entire length of the hull between nabranymi sets of elements in the form of inclined transverse ribs, separated by grooves, and the edges of the elements of the body are inclined towards the adjacent edges of the sleeve have the same slope, characterized in that each set of elements located on the casing contains two rows of ribs are inclined in different directions, the projections on the housing made in the form of strips of a semi-circular cross-section, located at the same distance from sets of elements in the bore of the sleeve is made of four spaced pairs of reciprocal set of elements with alternating inclination of the ribs, and between pairs of response sets of elements symmetrically formed by three parallel grooves.

2. The electric switch under item 1, characterized in that the mounting device mounting parts are made in the form of two elastic petals extending from the outer surface of the sleeve and facing the flange.

3. The electric switch under item 1, characterized in that the mounting part is formed of two identical parts connected latches, located on the outer surface of the sleeve.

4. The electric switch under item 1, characterized in that the average of every three grooves in the hub mounting parts are made of a semi-circular cross-section, and each extreme notch="ptx2">

5. The electric switch under item 1, characterized in that the rows of ribs of each set of elements of the body are connected with each other.

6. The electric switch on p. 5, characterized in that the rows of ribs are connected by an edge to an edge".

7. The electric switch on p. 5, characterized in that the rows of ribs are connected by an edge to the groove".

 

Same patents:

FIELD: electricity.

SUBSTANCE: there is a contact switch with the switching push bar (11), the supporting plate (10) and the switching body (12) for the switching push bar (11) placement. In this switching push bar, the switching body (12) is set removable towards the supporting plate (10). At a minimum one catch mechanism (24) of the supporting plate is prescribed at least on one edge lip (26) of the supporting plate in this contact switch. At the least one switching body catch mechanism (19) is prescribed on the switching body (12) in such a way that the supporting plate (10) can be fixed with the switching body (12) at a minimum at two different levels.

EFFECT: manufacture and usage simplification.

15 cl, 9 dwg

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