CN205001406U - Hand clutch - Google Patents

Abstract

The utility model particularly relates to a hand clutch. It is connected with the tail shaft of the motor, including: a paired driven bevel gear and a driving bevel gear, a rotatable hollow shaft, a gear sleeve, a reset member, a push rod, a pin shaft, and a rotating handle. The driven bevel gear Connected with the tail shaft, the active bevel gear is slid on the hollow shaft through the gear sleeve, the reset member is installed on one end of the gear sleeve, the hollow shaft is provided with a strip-shaped hole penetrating the outer wall, and the pin shaft is vertical It is slidably installed in the bar-shaped hole and connected with the gear sleeve at the end. The push rod used to push the pin shaft is partially accommodated in the hollow shaft. The end enters the sleeve part in the hollow shaft, and the handle part drives the hollow shaft to rotate. Compared with the prior art, the utility model has the following advantages: 1. The space occupied by the clutch is saved. 2. The setting of related accessories is reduced, and the structure is simplified skillfully.

Description

a hand clutch

technical field

The utility model belongs to the technical field of clutches, in particular to a hand clutch.

Background technique

At present, in electric equipment such as barrier gates and electric door operators, clutches are generally required to realize the integration of automatic and manual. After the clutch is disengaged, the brake lever or the door body can be pushed by hand to avoid the situation that the equipment cannot be used in case of power failure or failure.

The utility model patent with the application number CN201320772958.3 discloses a barrier gate clutch device, which includes a driving wheel driven by a motor and a driven wheel fixedly connected to the brake lever. The driving wheel and the driven wheel are arranged concentrically close to each other; There is a stepped hole on the moving wheel, and a clutch pin is slid in the large hole of the stepped hole. The tail end of the clutch pin is connected to the driven end of a clutch wire, and the clutch wire is passed outward from the small hole of the stepped hole. The clutch line is also sleeved with a spring placed in the stepped hole, and the driving wheel is provided with at least one positioning socket matching the head end of the clutch pin; the driving end of the clutch line is fixedly arranged on a pulling device. The barrier gate clutch device of the utility model has the advantage of being able to manually lift and lower the pole even when the power is cut off or malfunctions. However, the above-mentioned barrier gate clutch device still has the disadvantages of relatively complicated structure and large space occupation.

Contents of the invention

The purpose of the utility model is to provide a simple and compact hand clutch.

In order to achieve the above object, the utility model adopts the following technical scheme: a hand clutch connected to the tail shaft of the motor, which is characterized in that it includes: a paired driven bevel gear and a driving bevel gear, a rotatable hollow shaft, Gear sleeve, reset piece, ejector rod, pin shaft, and rotating handle, the driven bevel gear is connected with the tail shaft, the driving bevel gear is slid on the hollow shaft through the gear sleeve, and the reset piece is installed on the gear sleeve One end of the hollow shaft is provided with a bar-shaped hole through the outer wall, the pin shaft is vertically slidably installed in the bar-shaped hole and connected with the gear sleeve at the end, and the ejector rod for pushing the pin shaft is partially accommodated in the Inside the hollow shaft, the rotating handle has a sleeve part that fits with the tail end of the hollow shaft so as to push the tail end of the ejector rod into the hollow shaft, and a handle part that drives the hollow shaft to rotate.

Further, a bracket is also included, and the hollow shaft is rotatably mounted on the bracket.

Preferably, the reset member is sleeved on the hollow shaft and abutted between the gear sleeve and the bracket.

Preferably, two pin holes are arranged symmetrically on the gear sleeve, and the two pin holes are closely connected with the two ends of the pin shaft respectively.

Preferably, the head end of the ejector rod is provided with a pin groove through which the pin shaft passes.

Preferably, the pin shaft is an elastic cylindrical pin.

Compared with the prior art, the utility model has the following advantages:

1. The power of the output motor is reversed through two matching bevel gears, which makes the layout of other parts more compact and saves the space occupied by the clutch.

2. The rotating handle has a sleeve part matched with the tail end of the hollow shaft to push the ejector rod, and has a handle part to drive the active bevel gear to rotate, so that it integrates multiple functions of pushing, positioning and shaking the active bevel gear, reducing the related The arrangement of accessories cleverly realizes the simplification of the structure.

Description of drawings

Fig. 1 is the external structure schematic diagram of the hand clutch of the present utility model;

Fig. 2 is the internal schematic diagram of the hand clutch of the present utility model in the initial state;

Fig. 3 is the internal schematic view of the hand clutch of the present utility model in use;

Fig. 4 is the structural representation of the support of the utility model;

Fig. 5 is the structural representation of hollow shaft of the present utility model;

Fig. 6 is a structural schematic diagram of the rotary handle of the present invention.

detailed description

Below in conjunction with accompanying drawing 1-6 the utility model is described in further detail:

As shown in Figures 1, 2 and 3, the hand clutch includes a housing 11, a bracket 15, a driven bevel gear 12, a driving bevel gear 13, a hollow shaft 22, a pin shaft 23, a gear sleeve 24, a reset member 25, and a push rod 26 And turn handle 27.

The shell 11 is cylindrical, with an open bottom and is fixed on the bracket 15 by a circle of screws on the edge, and several cooling holes are opened on the top. An opening is provided on the side wall of the housing 11 to allow the tail end of the hollow shaft 22 to pass through laterally. As shown in FIG. 4 , the bottom end of the bracket 15 is a circular structure with a through slot 153 in the center, allowing the tail shaft 3 of the motor 1 to pass through vertically. The top end of the bracket 15 has two symmetrical connecting ears 151 , the top of the connecting ears 151 is provided with a mounting through hole 152 , and a sliding sleeve is arranged in the mounting through hole 152 .

As shown in FIGS. 2 and 3 , the driven bevel gear 12 is detachably connected to the tail shaft 3 through a key, thereby being fixedly mounted on the tail shaft 3 . The driving bevel gear 13 is vertically arranged relative to the driven bevel gear 12, and can selectively engage or disengage with the driven bevel gear 12 by moving laterally.

As shown in FIG. 5 , the hollow shaft 22 is divided into a head section 223 and a tail section 224 . The two ends of the head section 223 are respectively installed in two sliding sleeves so as to be able to rotate relative to the bracket 15 . There are retaining rings on both sides of the sliding sleeve to prevent the hollow shaft 22 from moving laterally. The head section 223 is symmetrically provided with two strip-shaped holes 221 penetrating the outer wall. The tail section 224 protrudes from the bracket 15 and the housing 11 , and its outer surface is configured as the first mating surface 222 mated with the rotating handle 27 .

The gear sleeve 24 is slidingly sleeved on the hollow shaft 22, and two pin holes penetrating the outer wall are symmetrically arranged on one end thereof. The driving bevel gear 13 is fixed on the other end of the gear sleeve 24 . The reset member 25 is a compression spring, which is sheathed on the outside of the hollow shaft 22 . One end of the reset member 25 abuts against the inner side of the connecting ear 151 , and the other end abuts against one end of the gear sleeve 24 , and when it is reset, it will exert a driving force on the gear sleeve 24 and the driving bevel gear 13 .

The push rod 26 is partially housed inside the hollow shaft 22 , and its tail end protrudes from the hollow shaft 22 to a certain length. The head end of the push rod 26 has a pin slot extending vertically through it. Bearing pin 23 is elastic cylindrical pin, and it passes pin groove and bar-shaped hole 221, is tightly fitted with pin hole at the end and is connected. Pushed by the push rod 26 or the reset member 25 , the pin shaft 23 will slide between two ends along the bar-shaped hole 221 .

As shown in FIG. 6 , the rotating handle 27 includes a sleeve portion 271 and a handle portion 272 . The inner surface of the sleeve portion 271 is configured as a second matching surface 273 matching the first matching surface, so as to match the rotating handle 27 and the hollow shaft 22 together. During the mating process, the tail end of the ejector rod 26 will be pushed into the interior of the hollow shaft 22 by the inner end surface of the sleeve part 271, the ejector rod 26 pushes the pin shaft 23, and the pin shaft 23 drives the gear sleeve 24 to push the driving bevel gear 13 to move , so that the driving bevel gear 13 meshes with the driven bevel gear 12 .

The handle portion 272 is integrally formed with the sleeve portion 271 . After the sleeve part 271 is mated with the hollow shaft 22 , the handle part 272 drives the hollow shaft 22 to rotate, and drives the driving bevel gear 13 to rotate through the pin shaft 23 and the gear sleeve 24 .

working principle:

When there is no power failure or failure, the rotating handle 27 is not assembled on the hollow shaft 22; the tail end of the push rod 26 stretches out a certain length from the hollow shaft 22, the pin shaft 23 is located at one end of the strip hole 221, and the reset member 25 is in a natural position. state, the driving bevel gear 13 and the driven bevel gear 12 are in a disengaged state, and the rotating shaft of the motor 1 outputs the electric driving force generated by the internal stator-rotor structure.

When a power failure or electrical failure occurs, the rotating handle 27 is connected to the hollow shaft 22, and the tail end of the push rod 26 is pushed into the hollow shaft 22, so that the pin shaft 23 slides to the other end of the strip hole 221, and the gear sleeve 24 The reset member 25 is compressed, and the driving bevel gear 13 moves to mesh with the driven bevel gear 12 . After matching, the handle part 272 drives the driving bevel gear 13 to rotate, and then drives the driven bevel gear 12 and the tail shaft 3 to rotate, so that the motor 1 outputs manual driving force.

After energization or fault repair, the rotating handle 27 is unloaded from the hollow shaft 22, and the tail end of the ejector rod 26 loses the pushing effect of the rotating handle 27, and under the reset action of the reset member 25, the hollow shaft 22 is withdrawn again, and the driving bevel gear 13 returns initial position, thereby disengaging from the driven bevel gear 12.

The above are only preferred embodiments of the utility model, and are not intended to limit the utility model in any form. The sleeve portion 271 and the hollow shaft 22 can also adopt other mating methods such as internal and external thread fit, elastic snap fit, etc. that are both firm and easy to disassemble. Push rod 26 also can not be provided with pin groove, and its head end abuts against pin shaft 23, can play the effect of pushing pin shaft 23 equally.

Claims (6)

1. A hand clutch connected to the tail shaft of the motor, characterized in that it includes: a paired driven bevel gear and a driving bevel gear, a rotatable hollow shaft, a gear sleeve, a reset member, a push rod, and a pin , and turning the handle, the driven bevel gear is connected with the tail shaft, the driving bevel gear is slid on the hollow shaft through the gear sleeve, the reset member is installed on one end of the gear sleeve, and the hollow shaft is provided with a through The bar-shaped hole on the outer wall, the pin shaft is vertically slidably installed in the bar-shaped hole and the end is connected with the gear sleeve, the ejector rod used to push the pin shaft is partially accommodated in the hollow shaft, and the rotating handle has a connection with the hollow shaft The tail end is matched so as to push the tail end of the ejector rod into the sleeve part in the hollow shaft, and the handle part drives the hollow shaft to rotate. 2. The hand clutch according to claim 1, further comprising: a bracket, the hollow shaft is rotatably mounted on the bracket. 3. The hand clutch according to claim 2, characterized in that: the reset member is sleeved on the hollow shaft and abuts between the gear sleeve and the bracket. 4. The hand clutch according to claim 1, characterized in that: two pin holes are symmetrically arranged on the gear sleeve, and the two pin holes are closely connected with two ends of the pin shaft respectively. 5. The hand clutch according to claim 4, characterized in that: the head end of the ejector rod is provided with a pin groove through which the pin shaft passes. 6. The hand clutch according to claim 4 or 5, characterized in that: the pin shaft is an elastic cylindrical pin.