CN104425908B

CN104425908B - Switch

Info

Publication number: CN104425908B
Application number: CN201410437108.7A
Authority: CN
Inventors: R.格特勒; F.尼斯; G.施马克
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 2013-08-29
Filing date: 2014-08-29
Publication date: 2017-04-12
Anticipated expiration: 2034-08-29
Also published as: CN104425908A

Abstract

The invention provides a switch which comprises an electrode housing (1) of an insulator and a switch contact. The switch components are mutually adhered to each other when the switch is in a closed state. The switch also comprises a clamp unit (3) with a frame (3a). The clamp unit is connected with the fixed contact components and is provided with a frame opening (3b). The frame opening (3b) can be inserted with connection cables through the first port (5) at the wall of the electrode housing (1). A clamp nut (6) is also provided which can extend in the horizontal insertion direction (4) to the frame opening (3b). a second port (8) is provided which allows an insertion tool to be placed so as to penetrate to the electrode housing (1). In order to meet the air travel and electricity travel in large diameter cable, it is suggested that the second port (8) be sealed by the sealing components (7) which are mounted in the side direction guiding groove (9) and can move horizontally to the clamp nut (6).

Description

Switch

Technical field

The present invention relates to a kind of switch, pole housing of the switch with electric insulation；Switch contact, the switch contact connects Tactile element mutually reclines in switch closure；The clamping unit of the form with frame, the clamping unit and fixed contact element Part connects and with frame opening, the first port insertion connection electricity in the frame opening from the wall that outside can pass through pole housing Cable；Pinching screw, the pinching screw is extended in frame opening and by means of connection cable clamping transverse to direction of insertion Mode be fixed on inframe；With the second port in the wall of pole housing, instrument can be inserted by second port.

Background technology

The switch of the form with load disconnecting switch is known.The switch all has electricity in multipolar configuration per pole The pole housing of insulation, be disposed with switch contact in the pole housing, and the form with contact block of the switch contact connects Tactile element mutually reclines in switch closure, and wherein each movable contact block is pressed against fixed contact block.Generally, contact block Being arranged in can surround on the double-arm lever that rotation axiss are pivoted.Common switch shaft is moved towards with being horizontally through pole housing, with simultaneously Can disconnect and close all switch contacts.To connect connection cable, commonly used clamping unit, the clamping unit is formed as frame Shape and it is connected with fixed contact block.Frame has frame opening, and connection cable is can be inserted in the frame opening.For this purpose, in pole shell Corresponding port is provided in the wall of body.Pinching screw is moved towards transverse to direction of insertion, and the pinching screw is extended in frame opening. By the rotation that pinching screw is made by means of screwdriver, connection cable can be clamped and be fixed on inframe.For this purpose, screwdriver is inserted into By the port in the wall of pole housing.

Due to limited structure space, using frame be clipped in cable size it is big when cause to be unsatisfactory for the air stroke that specifies and climb The problem of electric stroke (Kriechstrecke).

The content of the invention

The technical problem to be solved is to overcome this shortcoming.

Solution is given in the following way, i.e. (the second) closing that port be able to can be moved transverse to pinching screw Element is closed, and the closure elements here is bonded in the guiding groove for laterally moving towards in the direction of movement.

If closure elements can be loaded with elastic force in the closing direction, close and ensure in a straightforward manner.

Technically in simple form of implementation, elastic force is formed by spring.

Suitably, spring is fixed on closure elements with one end.

The particularly simple construction of spring is that spring has meander-shaped.

In simplest situation, zigzag spring and closure elements are formed by single plastic components.

Description of the drawings

Present aspect is hereinafter described in detail according to embodiment, and each figure is：

Fig. 1 shows the partial sectional view of the pole housing of load disconnecting switch, with the closing unit in its closed position Part, and

Fig. 2 shows the pole housing according to Fig. 1, with closure elements in an open position.

Specific embodiment

Fig. 1 shows the pole housing 1 of load disconnecting switch, is hereinafter referred to as switch.Pole housing 1 is by being electrically insulated Material is formed and formed by two plastic half-shells 1a, 1b.There are two switch contacts in housing, the switch contact has The contact element of the form of contact block mutually reclines in switch closure.Two contact blocks are fixedly arranged, and two contact blocks Movingly arrange.Movable contact block is in can be surrounded and the rotation axiss pivot of the rotation axis coincident of switch shaft 2 On the free end of double-arm lever.The rotation of switch shaft 2 causes movable contact block to abut in fixed contact block according to direction of rotation Above or from fixed contact block separate (all parts in addition to the switch shaft block 2a of pole housing 1 and switch shaft 2 are all not shown).

Each multipole switch includes multiple this pole boxes 1, and the pole box 1 is mutually reclined with its large area side, its breaker in middle The switch shaft block 2a of axle 2 is coupled to each other so that define the switch shaft 2 of insertion.

To connect connection cable (not shown), using the clamping unit 3 with frame 3a respectively.In the direction of arrow 4, connection Each end of cable can be plugged in frame opening 3b.Insertion (first) port 5 respectively by being present in pole housing 1 (see Fig. 1 right sides) is carried out.Pinching screw 6 is moved towards transverse to direction of insertion 4, for pinching screw 6, only visible screw in FIG Head 6a.Pinching screw 6 is extend in frame opening 3b with its shank of screw.

Closure elements 7 with plastic cladding element form are in FIG head of screw 6a tops and enclose (second) and lead to Mouthfuls 8, it is visible on the right side cut open such as in pole housing 1.Closure elements 7 are in its closed position.The closure elements 7 are parallel It is directed and longitudinally movable being laterally guided in groove 9 in the direction of arrow 4, this is schematically illustrated by double-head arrow 10.In envelope Close and indentation spring 11 is secured on element 7, be shown in Figure 1 for the state in unclamping.Closure elements 7 and the here of spring 11 Formed by the plastic components of one.Connection track 3c is connected frame 3a (by front plastic half-shell 1a screenings with fixed contact block respectively Gear).

Fig. 2 shows the pole housing 1 with the closure elements 7 opened according to Fig. 1, and the closure elements 7 are relative to Fig. 1 It is moved rightwards (for example moved before being inserted in port 8 slightly by screwdriver).Zigzag spring 11 it is compacted and Therefore it is tensioned.By the space 12 being formed on closure elements 7, screwdriver can be easily introduced into and clamp the connection of insertion Cable.If screwdriver is removed from port 8 and space 12, spring 11 make closure elements 7 automatically and be moved to the left and therefore Port 8 is closed.

Claims

1. a kind of switch, carries

The pole housing (1) of electric insulation,

Switch contact, the contact element of the switch contact mutually reclines in switch closure,

The clamping unit (3) of the form with frame (3a), the clamping unit (3) is connected and with frame with fixed contact element Opening (3b), the first port (5) the insertion connection electricity in the frame opening (3b) from the wall that outside can pass through pole housing (1) Cable,

Pinching screw (6), the pinching screw (6) is extended in frame opening (3b) and by means of even transverse to direction of insertion (4) Connect cable to be fixed in the way of it can clamp in frame (3a), and

The second port (8) in the wall of pole housing (1), instrument can be inserted by second port,

Characterized in that,

Second port (8) can be laterally guided closure elements in groove (9), can moving transverse to pinching screw (6) by being bonded on (7) close.

2. switch according to claim 1, it is characterised in that closure elements (7) are applied in the closing direction with elasticity Power.

3. switch according to claim 2, it is characterised in that elastic force is formed by spring (11).

4. switch according to claim 3, it is characterised in that spring (11) is fixed on closure elements (7) with one end.

5. switch according to claim 4, it is characterised in that spring (11) is with meander-shaped.

6. switch according to claim 5, it is characterised in that spring (11) and closure elements (7) are by a plastic components Formed.