CN216212946U

CN216212946U - Elevator travel switch

Info

Publication number: CN216212946U
Application number: CN202122572188.5U
Authority: CN
Inventors: 许生清
Original assignee: Hangzhou Beifeige Electric Technology Co ltd
Current assignee: Zhejiang Xike Automatic Control Technology Co.,Ltd.
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-04-05
Anticipated expiration: 2031-10-25

Abstract

The utility model discloses an elevator travel switch, which comprises a shell and a pull rod, the sliding rod and the contact piece are arranged in the shell, a mounting cavity is arranged in the shell, sliding holes are formed in the upper wall surface of the mounting cavity, opposite convex blocks are arranged on the inner walls of two sides of the mounting cavity, a sliding groove is formed in a gap between the convex blocks, a fixing block is arranged in the mounting cavity, a cross-shaped through hole is formed in the fixing block, the sliding rod penetrates through a vertical hole and the sliding groove in the cross-shaped through hole, a propping structure used for propping the sliding rod tightly to fix the position of the sliding rod is arranged between the sliding rod and the inner walls of two sides of a transverse hole in the cross-shaped through hole, the lower end of a drawing rod penetrates through the sliding hole to be fixedly connected with the upper end of the sliding rod, the upper end of the drawing rod is exposed outside the shell, the contact piece is located below the convex block and is fixedly connected with the lower end of the sliding rod, an L-shaped copper sheet is arranged on the convex blocks, a wiring terminal is arranged on two sides of the surface of the contact piece opposite to the L-shaped copper sheet, and a stationary contact capable of contacting with the movable contact is arranged on the L-shaped copper sheet. The utility model has compact structure, convenient use and good reliability and stability.

Description

Elevator travel switch

Technical Field

The utility model relates to a travel switch, in particular to an elevator travel switch.

Background

A travel switch and a position switch are also called limit switches, and are common small-current master control electric appliances. The contact of the mechanical motion part is operated by the collision to realize the connection or disconnection of the control circuit, thereby achieving a certain control purpose. Generally, such switches are used to limit the position or stroke of the movement of the machine, so that the moving machine can automatically stop, move in reverse, shift or automatically move back and forth according to a certain position or stroke.

At present, a row of control switches of an upper travel switch and a lower travel switch are respectively arranged at the uppermost end and the lowermost end of an elevator shaft, when a car exceeds the position 50mm of a leveling floor, the car bumps a bow to enable the upper travel switch or the lower travel switch to act, a power supply is cut off, and therefore the elevator stops running and plays a role in protection.

However, the existing travel switch for the elevator has the defects of complex structure, poor reliability and stability and inconvenient use.

SUMMERY OF THE UTILITY MODEL

The utility model provides an elevator travel switch with compact structure, convenient use and good reliability and stability, which aims to solve the problems of complex structure, poor reliability and stability and inconvenient use of the existing travel switch for the elevator.

In order to achieve the purpose, the utility model adopts the following technical scheme: an elevator travel switch comprises a shell, a pull rod, sliding rods and contact pieces, wherein a mounting cavity is arranged in the shell, a sliding hole is formed in the upper wall surface of the mounting cavity, opposite convex blocks are arranged on the inner walls of two sides of the mounting cavity, a sliding chute is formed by gaps among the convex blocks, a fixed block is arranged at a position above the convex blocks in the mounting cavity, a cross-shaped through hole is formed in the fixed block, the sliding rods penetrate through vertical holes and the sliding chutes in the cross-shaped through hole, a propping structure used for propping against the sliding rods to fix the positions of the sliding rods is arranged between the sliding rods and the inner walls of two sides of a transverse hole in the cross-shaped through hole, the lower end of the pull rod penetrates through the sliding holes to be fixedly connected with the upper end of the sliding rods, the upper end of the pull rod is exposed outside the shell, the contact pieces are arranged below the convex blocks and fixedly connected with the lower ends of the sliding rods, an L-shaped copper piece is arranged on the convex blocks, a connecting terminal is arranged on each L-shaped copper piece, and movable contacts are arranged on two sides of the surface opposite to the L-shaped copper piece, the L-shaped copper sheet is provided with a fixed contact which can be contacted with the movable contact. According to the utility model, the sliding rod can slide along the sliding groove, when the pull rod is pulled to enable the sliding rod to move upwards to the stroke end point, the sliding rod is fixed at the lower position under the abutting action of the abutting structure, at the moment, the movable contact is in contact with the static contact, and the travel switch is in an open state; when the drawing rod is impacted, the sliding rod moves downwards, the movable contact is separated from the fixed contact, and the travel switch is in a disconnected state, so that the use is very convenient; the lug makes the electric wire that links to each other with binding post can separate, avoids mutual contact and causes the short circuit, improves reliability and the security of using.

Preferably, the abutting structure comprises a pair of abutting swinging pieces and abutting springs, insertion parts are arranged at two ends of the abutting swinging pieces, spring cavities are arranged at two sides of the sliding rod, the abutting springs are arranged in the spring cavities, the inner ends of the abutting springs are abutted against the cavity bottoms of the spring cavities, spring glands are arranged at the outer ends of the abutting springs, longitudinal V-shaped limiting grooves are formed in the inner walls of two sides of a transverse hole in the cross-shaped through hole, V-shaped limiting notches are formed in the spring glands, insertion holes are formed in the inner walls of two sides of the transverse hole in the cross-shaped through hole and the spring glands, the abutting swinging pieces are located in the transverse hole in the cross-shaped through hole, two ends of each abutting swinging piece are located in the longitudinal V-shaped limiting grooves and the V-shaped limiting notches respectively, and the insertion parts at two ends of the abutting swinging pieces are in insertion fit with the insertion holes in the inner walls of two sides of the transverse hole in the cross-shaped through hole and the insertion holes in the spring glands respectively. The abutting swinging piece can swing up and down along with the up-and-down movement of the sliding rod; when the sliding rod is static, the spring gland compresses the compression spring under the action of abutting against the swinging piece, and the compression spring can abut against the sliding rod to prevent the sliding rod from displacing; when the sliding rod moves, the compression spring can be compressed by the extrusion of the sliding rod, so that the sliding of the sliding rod is facilitated; the longitudinal V-shaped limiting groove and the V-shaped limiting notch limit the swing angle of the abutting swing piece; the abutting structure is novel and ingenious in structure and good in durability, the sliding rod can move up and down, the position of the sliding rod can be fixed at any time, the use is very convenient, and the stability is good.

Preferably, the bottom surface of the sliding rod is provided with a limiting block, and the bottom of the sliding groove is provided with a limiting step which can block and interfere with the limiting block. The limiting block is matched with the limiting step to limit the downward sliding stroke of the sliding rod, and the abutting swinging piece is prevented from being separated from the spring gland (the insertion part is withdrawn from the insertion hole) due to the overlarge moving distance of the sliding rod.

Preferably, a spring mounting hole is formed in the position, close to the lower end, of the sliding rod, a compression spring is arranged in the spring mounting hole, the contact piece transversely penetrates through the spring mounting hole, limiting notches matched with the sliding rod in a sliding mode are formed in the upper side face and the lower side face of the contact piece, and the contact piece is tightly abutted to the sliding rod through the compression spring. When the movable contact is in contact with the fixed contact, the compression spring can be tightly propped against the contact piece, so that the movable contact can be always kept in contact with the fixed contact, and the use reliability is improved.

Preferably, a housing cover is arranged on the housing. The shell cover plays a dustproof and waterproof role.

Preferably, a sealing gasket is arranged between the shell cover and the shell.

Preferably, the lower wall surface of the mounting cavity is provided with an outlet hole.

Preferably, the upper end of the slide rod blocks interference with a housing around the slide hole. The upper end of the sliding rod is blocked and interfered with the shell around the sliding hole to limit the upward movement stroke of the sliding rod and prevent the abutting swinging piece from being separated from the spring gland (the inserting part is withdrawn from the inserting hole) due to the overlarge movement distance of the sliding rod.

Preferably, the outer side of the sliding hole is provided with a rubber sleeve, and the pulling rod penetrates through the rubber sleeve. The rubber sleeve plays a role in sealing and prevents dust and water from entering the installation cavity.

Therefore, the utility model has the following beneficial effects:

(1) the sliding rod can move up and down through the abutting structure, and the position of the sliding rod can be fixed at any time, so that the sliding rod is very convenient to use and good in stability;

(2) the lug makes the electric wire that links to each other with binding post can separate, avoids mutual contact and causes the short circuit, improves reliability and the security of using.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is a front view of an internal structure of the present invention.

Fig. 4 is a front view of the housing of the present invention.

Fig. 5 is a top view of fig. 4.

Fig. 6 is a bottom view of fig. 4.

FIG. 7 is a schematic connection diagram of the sliding rod, the abutting structure and the contact piece.

Fig. 8 is an enlarged view at a in fig. 7.

Fig. 9 is a right side view of fig. 7.

Fig. 10 is a front view of the fixing block.

Fig. 11 is a bottom view of fig. 10.

Fig. 12 is a front view of the resisting swing piece.

Fig. 13 is a front view of the contact patch.

In the figure: the device comprises a shell 1, a drawing rod 2, a sliding rod 3, a contact piece 4, a mounting cavity 5, a sliding hole 6, a bump 7, a sliding groove 8, a fixing block 9, a cross-shaped through hole 10, an L-shaped copper sheet 11, a wiring terminal 12, a movable contact 13, a fixed contact 14, a tight swinging piece 15, a tight spring 16, an inserting part 17, a spring cavity 18, a spring gland 19, a longitudinal V-shaped limiting groove 20, a V-shaped limiting notch 21, an inserting hole 22, a limiting block 23, a limiting step 24, a spring mounting hole 25, a compression spring 26, a limiting notch 27, a shell cover 28, a sealing gasket 29, a wire outlet 30 and a rubber sleeve 31.

Detailed Description

The utility model is further described with reference to the following figures and detailed description.

As shown in fig. 1, 2 and 3, the elevator travel switch comprises a housing 1, a pull rod 2, a sliding rod 3 and a contact piece 4, wherein a mounting cavity 5 is arranged in the housing, a housing cover 28 is arranged on the housing, a sealing gasket 29 is arranged between the housing cover and the housing, a sliding hole 6 (shown in fig. 5) is formed on the upper wall surface of the mounting cavity, a wire outlet 30 (shown in fig. 6) is formed on the lower wall surface of the mounting cavity, a rubber sleeve 31 is fixed on the outer side of the sliding hole, opposite lugs 7 are arranged on the inner walls on two sides of the mounting cavity, a sliding groove 8 is formed by a gap between the lugs, a fixed block 9 is arranged at a position above the lugs in the mounting cavity, a cross through hole 10 (shown in fig. 11) is formed in the fixed block, the sliding rod passes through a vertical hole and the sliding groove in the cross through hole, a limiting block 23 (shown in fig. 9) is formed by protruding the bottom surface of the sliding groove, a limiting step 24 (shown in fig. 4) capable of blocking interference with the limiting block is arranged at the bottom surface of the sliding groove, a tight-resisting structure for resisting the slide bar tightly to fix the position of the slide bar is arranged between the slide bar and the inner walls of the two sides of the cross hole in the cross through hole, the tight-resisting structure comprises a pair of tight-resisting swinging sheets 15 and tight-resisting springs 16 (shown in figures 7 and 8), the two ends of the tight-resisting swinging sheets are provided with inserting parts 17 (shown in figure 12), the two sides of the slide bar are provided with spring cavities 18, the tight-resisting springs are arranged in the spring cavities, the inner ends of the tight-resisting springs are abutted against the bottom of the spring cavities, the outer ends of the tight-resisting springs are provided with spring glands 19, the inner walls of the two sides of the cross hole in the cross through hole are provided with longitudinal V-shaped limiting grooves 20 (shown in figure 10), the spring glands are provided with V-shaped limiting notches 21, the inner walls of the two sides of the cross hole in the cross through hole and the spring glands are provided with inserting holes 22, the tight-resisting swinging sheets are arranged in the cross hole in the cross through hole, and the two ends of each tight-resisting swinging sheet are respectively arranged in the longitudinal V-shaped limiting notches, and the plug-in parts at the two ends of the abutting swinging piece are respectively in plug-in fit with the plug holes on the inner walls at the two sides of the transverse hole in the cross-shaped through hole and the plug holes on the spring gland, the lower end of the drawing rod passes through the sliding hole and is fixedly connected with the upper end of the sliding rod after passing through the rubber sleeve, the upper end of the sliding rod is blocked and interfered with the shell around the sliding hole, the upper end of the drawing rod is exposed out of the shell, the position of the sliding rod close to the lower end is internally provided with a spring mounting hole 25, a compression spring 26 is arranged in the spring mounting hole, the contact piece traverses the spring mounting hole and is provided with limiting notches 27 (shown in figure 13) matched with the sliding rod in a sliding way on the upper side and the lower side of the contact piece, the contact piece abuts against the sliding rod through the compression spring, the convex block is provided with an L-shaped copper sheet 11, the L-shaped copper sheet is provided with a wiring terminal 12, the two sides of the surface of the contact piece opposite to the L-shaped copper sheet are provided with movable contacts 13, and the static contacts 14 capable of contacting with the movable contacts.

The use principle of the utility model is as follows: the drawing rod is pulled upwards to enable the movable contact to be in contact with the fixed contact, the sliding rod is fixed under the action of the abutting structure, and the travel switch is opened (a circuit is connected); when the pull rod is impacted, the slide rod moves downwards, the movable contact is separated from the fixed contact, and the travel switch is in a disconnected state (circuit is disconnected).

The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the utility model as set forth in the claims.

Claims

1. An elevator travel switch is characterized by comprising a shell (1), a drawing rod (2), sliding rods (3) and contact pieces (4), wherein a mounting cavity (5) is arranged in the shell, a sliding hole (6) is formed in the upper wall surface of the mounting cavity, opposite convex blocks (7) are arranged on the inner walls of two sides of the mounting cavity, a sliding groove (8) is formed in a gap between the convex blocks, a fixing block (9) is arranged at a position above the convex blocks in the mounting cavity, a cross-shaped through hole (10) is formed in the fixing block, the sliding rods penetrate through vertical holes and the sliding grooves in the cross-shaped through hole, a tightening structure used for tightening the sliding rods to fix the positions of the sliding rods is arranged between the sliding rods and the inner walls of two sides of a transverse hole in the cross-shaped through hole, the lower end of the drawing rod penetrates through the sliding hole to be fixedly connected with the upper end of the sliding rods, the upper end of the drawing rod is exposed out of the shell, and the contact pieces are positioned below the convex blocks and fixedly connected with the lower end of the sliding rods, the convex block is provided with an L-shaped copper sheet (11), the L-shaped copper sheet is provided with a wiring terminal (12), two sides of the surface of the contact sheet opposite to the L-shaped copper sheet are provided with movable contacts (13), and the L-shaped copper sheet is provided with a fixed contact (14) which can be in contact with the movable contacts.

2. The elevator travel switch according to claim 1, wherein the abutting structure comprises a pair of abutting swinging pieces (15) and an abutting spring (16), the abutting swinging pieces are provided with inserting parts (17) at two ends thereof, the sliding rod is provided with spring cavities (18) at two sides thereof, the abutting spring is arranged in the spring cavity, the inner end of the abutting spring abuts against the cavity bottom of the spring cavity, the outer end of the abutting spring is provided with a spring gland (19), the inner walls of two sides of the transverse hole in the cross-shaped through hole are provided with longitudinal V-shaped limiting grooves (20), the spring gland is provided with V-shaped limiting notches (21), the inner walls of two sides of the transverse hole in the cross-shaped through hole and the spring gland are provided with insertion holes (22), the abutting swinging pieces are positioned in the transverse hole in the cross-shaped through hole, and two ends of each abutting swinging piece are respectively positioned in the longitudinal V-shaped limiting grooves and the V-shaped limiting notches, and the insertion parts tightly abutting against the two ends of the swinging piece are respectively in insertion fit with the insertion holes on the inner walls of the two sides of the transverse hole in the cross-shaped through hole and the insertion holes on the spring gland.

3. The elevator travel switch according to claim 1, wherein a limit block (23) is disposed on a bottom surface of the sliding rod, and a limit step (24) capable of blocking and interfering with the limit block is disposed on a bottom of the sliding groove.

4. The elevator travel switch according to claim 1, wherein a spring mounting hole (25) is formed in the position of the sliding rod close to the lower end, a compression spring (26) is arranged in the spring mounting hole, the contact piece traverses the spring mounting hole, and limit notches (27) matched with the sliding rod in a sliding manner are formed in the upper side surface and the lower side surface of the contact piece, and the contact piece is abutted against the sliding rod through the compression spring.

5. An elevator travel switch according to claim 1, characterized in that the housing is provided with a cover (28).

6. Elevator travel switch according to claim 5, characterized in that a sealing gasket (29) is provided between the housing cover and the housing.

7. An elevator travel switch according to claim 1, characterized in that the lower wall surface of the mounting chamber is provided with an outlet hole (30).

8. The elevator travel switch of claim 1, wherein the upper end of the sliding bar interferes with a housing around the sliding hole in a blocking manner.

9. An elevator travel switch according to claim 1, characterized in that the outside of the slide hole is provided with a rubber sleeve (31), through which the pull rod passes.