CN208122533U - A clutch mechanism of a door lock motor gearbox - Google Patents

Abstract

The utility model discloses a clutch mechanism of door lock motor gearbox, establish including main shaft and cover pivot in the main shaft, pivot and main shaft cooperate through lug and recess in the axial, the one end of main shaft be equipped with the knob that the pivot is connected, the cover is equipped with in the pivot is located the knob with spring between the main shaft, lug and recess adopt the toper to cooperate. The utility model discloses in the clutching mechanism with current lock motor gearbox, pivot and main shaft adopt the lug and the recess of rectangle to cooperate, change into to adopt the toper to cooperate, have reduced the planar area of contact of support around lug and the recess, make the lug fall into in the recess more easily. After the projection and the groove of the rotating shaft and the main shaft are separated manually through the knob for emergency unlocking, the projection of the rotating shaft and the main shaft can fall into the groove to realize automatic engagement of the clutch mechanism as long as the motor works, and the problem that the unlocking can not be realized due to manual engagement in the prior art is solved.

Description

A clutch mechanism of a door lock motor gearbox

technical field

The utility model belongs to locks, in particular to a clutch mechanism of a door lock motor gearbox.

Background technique

There is a problem that the clutch structure of the motor gearbox on the market cannot be automatically engaged. As shown in Figure 1 and Figure 2, the motor gearbox 1 is installed on the panel 5, and the main shaft 7 is a part of the motor gearbox 1. , the rotating shaft 2 passes through the main shaft 7, the rectangular protrusion 201 on the rotating shaft 2 matches the rectangular groove 701 in the main shaft 7, the hole 203 of the rotating shaft 2 cooperates with the locking lever 6, and the other end of the rotating shaft 2 is equipped with a spring 4 And knob 3, motor gearbox 1 drives main shaft 7 to rotate when working, and main shaft 7 drives rotating shaft 2 to rotate, and rotating shaft 2 drives locking lever (locking lever 6 is installed on the lock head to drive lock body) 6 rotations to complete unlocking and locking. When the motor system fails and cannot work, it needs to be unlocked manually. When unlocking in an emergency, the knob 3 needs to be pressed so that the projection 201 on the rotating shaft 2 breaks away from the groove 701 in the main shaft 7, and then the rotating knob 3 drives the rotating shaft 2 to drive the lock bar 6 to rotate to complete unlocking and locking. After emergency unlocking, since the end face 202 of the projection 201 on the rotating shaft 2 is a plane, it contacts with the supporting plane 702 around the groove 701 in the main shaft 7, and the projection 201 on the rotating shaft 2 does not return to the groove 701 in the main shaft 7 and cannot To realize the automatic engagement of the clutch structure, since the motor gearbox 1 drives the main shaft 7 to rotate at a high speed, even if the spring 4 is provided, the protrusion 201 on the rotating shaft 2 cannot return to the groove 701 in the main shaft 7, so the main shaft 7 cannot be driven The rotating shaft 2 rotates, and the rotating shaft 2 cannot drive the locking lever 6 to rotate to complete unlocking and locking. After emergency unlocking of this kind of lock, the knob 3 must be manually rotated to drive the rotating shaft 2 to reset, so that the protrusion 201 on the rotating shaft 2 cooperates with the groove 701 on the main shaft 7 to complete the engagement of the clutch structure, so as to ensure normal unlocking and locking , so it is very troublesome. Sometimes when you forget to turn the knob 3 in place when you go out, there will be serious problems, and the door cannot be opened (do not press the knob 3 during emergency unlocking to let the bump 201 on the shaft 2 and the concave in the main shaft 7 When the groove 701 breaks away from the concave-convex fit, rotating the knob 3 will drive the entire motor gearbox 1 to work, which is difficult to rotate).

Contents of the invention

The purpose of the utility model is to provide a clutch mechanism of a door lock motor gearbox with a simple structure that can be automatically engaged for the deficiencies in the prior art.

Realize the technical scheme that the utility model object adopts as follows:

The clutch mechanism of the door lock motor gearbox provided by the utility model includes a main shaft and a rotating shaft sleeved in the main shaft. There is a knob connected with the rotating shaft, and a spring between the knob and the main shaft is sheathed on the rotating shaft, and the protrusion and the groove are matched in a tapered shape.

Beneficial effect

In the utility model, in the clutch mechanism of the existing door lock motor gearbox, the rotating shaft and the main shaft adopt rectangular bumps and grooves to match, instead of using tapered ones, the contact area between the bumps and the supporting plane around the groove is reduced. , making it easier for the bump to fall into the groove. When the protrusion and groove of the shaft and the main shaft are separated manually through the knob for emergency unlocking, as long as the motor is working, the protrusions of the shaft and the main shaft will fall into the groove to realize the automatic engagement of the clutch mechanism, which overcomes the possibility of manual engagement in the prior art A problem that caused the lock to not be unlocked.

Further illustrate the technical scheme of the utility model below in conjunction with accompanying drawing.

Description of drawings

Figure 1 is a schematic diagram of the installation of an existing motor gearbox.

Fig. 2 is an exploded view of the existing motor gearbox.

Fig. 3 is an exploded view of the utility model.

Detailed ways

Example 1

See Fig. 1, Fig. 3, the clutch mechanism of the door lock motor gearbox provided by the utility model includes the main shaft 7 connected with the motor gearbox 1 and the rotating shaft 2 connected with the lock bar 6, and the rotating shaft 2 is sleeved on the main shaft 7 Inside, the rotating shaft 2 is provided with tapered bumps 201 with slopes 204 on both sides, and the main shaft 7 is provided with tapered grooves 701 with slopes 703 on both side walls matching the bumps 201 of the rotating shaft 2 , the rotating shaft 2 and the main shaft 7 cooperate in the axial direction through the protrusion 201 and the groove 701. One end of the main shaft 7 is provided with a knob 3 connected to the rotating shaft 2, and the rotating shaft 2 is sleeved with a 3 and the spring 4 between the main shaft 7.

The motor gearbox 1 drives the main shaft 7 to rotate during work, the main shaft 7 drives the rotating shaft 2 to rotate, and the rotating shaft 2 drives the locking bar 6 to rotate to complete unlocking and locking. When the motor system fails to work, you can manually press the knob 3 to make the protrusion 201 on the shaft 2 break away from the groove 701 in the main shaft 7, so that the clutch mechanism is separated, and then rotate the knob 3 to drive the lock lever through the shaft 2 6 rotations to complete unlocking and locking. After the emergency unlocking, since the protrusion 201 on the rotating shaft 2 and the groove 701 on the main shaft 7 are matched by a cone, when the motor gearbox 1 works next time, the main shaft 7 is driven to rotate at a high speed, under the action of the spring 4, the rotating shaft The projection 201 on the 2 can also fall into the 701 groove 701 in the main shaft 7 to complete the unlocking and locking.

Claims (1)

1. a kind of clutch of door-lock motor gearbox, including main shaft and the shaft being set in the main shaft, the shaft It is matched with main shaft axially through convex block and groove, one end of the main shaft is equipped with the knob connecting with the shaft, described The spring being arranged in shaft between the knob and the main shaft, it is characterized in that the convex block and groove use taper phase Cooperation.