CN201460470U - Improved lock adopting idle lock cylinders with outer milling tooth blades - Google Patents

Abstract

The utility model discloses an improved lock adopting an externally milled tooth blade idle lock core, comprising a front lock core and a rear lock core arranged in a lock body; a locking side column with a tooth opening is arranged on the front lock core to cooperate with a blade ball with a notch; a lock hole is arranged in the middle of the blade ball, and a protrusion that can cooperate with a boss with a tooth flower on a key is arranged on the edge of the lock hole; a lock pin is arranged on the rear lock core, and a step for stopping the rear lock core is arranged at the rear end of the lock body; a sleeve is fixed on the front lock core and sleeved on the rear lock core, and an elastic positioning bead is arranged between the sleeve and the rear lock core; the tail of the lock pin is conical; and a conical groove that cooperates with the tail of the lock pin is arranged on the step at the rear end of the lock body. The utility model cancels the lock pin reset spring in the prior art, so it can completely solve the problem that the lock cannot be used normally due to the loss of elasticity of the lock pin reset spring, improve the reliability of the lock, and extend the service life.

Description

Improved lock adopting external milling blade idling lock cylinder

technical field

The utility model belongs to mechanical locks, and relates to an improved lock adopting an idle-rotating lock cylinder with outer milling tooth blades.

Background technique

There is a class of locks in mechanical locks that use idling lock cylinders. The lock cylinders of these locks are composed of front and rear lock cylinders. The clutch between the front lock cylinder and the rear lock cylinder is usually realized by a clutch structure. Chinese patent applications 200710035819.1 and 200810031196.5 disclose clutch structures related to idling lock cylinders. Include the lock pin and the lock pin back-moving spring that are located in the rear lock core in these clutch structures, the clutch of front and back lock core is exactly to enter or withdraw from the front lock core by lock pin and realize. This clutch structure has found some shortcomings during the use process. Due to the frequent unlocking and closing for a long time, the lock pin return spring will have metal fatigue and its elasticity will be weakened. In addition, the dirt formed by the wear debris and dust of the parts will further weaken its elasticity. As a result, the lock pin cannot be reset when unblanking, and the lock is always in an idling state, so the lock cannot be opened, which affects the reliability of the lock.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide an improved lock cylinder adopting outer milling tooth blade idling lock core with better reliability.

The technical solution adopted to realize the purpose of this utility model is: an improved lock adopting an idler lock core with outer milling blades, including a lock body, a front lock core and a rear lock core arranged in the lock body; A group of blade pins consisting of two blade pins, a blade pin reset spring is arranged between the two blade pins; a gap is provided on one side of each blade pin, and a rectangular keyhole is provided in the middle. There is a protruding part that can cooperate with the boss with tooth flower on the key; the locking side column on the front lock cylinder is provided with a locking side column that can move axially in cooperation with the blade pins, and the locking side column is set on the locking side column. There are tooth openings to cooperate with the blade pins, and the gaps on the blade pins are matched with the locking side columns; a sleeve is set on the front lock cylinder, and a locking side column is provided between the locking side column and the end wall of the locking side column groove. Return spring; the lock pin is placed in the lock pin chute of the rear lock core, and the tail of the lock body is provided with a step for stopping the rear lock core; the sleeve is fixed on the front lock core and is sleeved on the rear lock core, The cylinder and the rear lock cylinder are in clearance fit, and elastic positioning beads are arranged between the sleeve and the rear lock cylinder; the tail of the lock pin is tapered; the tail step of the lock body is provided with a cone that matches the tail of the lock pin shaped groove.

The utility model is called an improved lock that adopts the idling lock core of the outer milling tooth blade because the blade pins are matched with the outer milling teeth of the key.

The utility model changes the tail of the lock pin in the lock core of the prior art into a conical shape to cooperate with the tapered groove on the step at the tail of the lock body, and cancels the lock pin return spring, so it can completely solve the problem of the loss of elasticity of the lock pin return spring. The problem that causes the lock to not be used normally improves the reliability of the lock and prolongs the service life.

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

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a view along the line A-A of Fig. 1 .

FIG. 3 is a top view of FIG. 1 .

FIG. 4 is a schematic diagram of different usage states of FIG. 1 .

FIG. 5 is a top view of FIG. 4 .

Detailed ways

See Fig. 1 to Fig. 3, the improved lock adopting external milling tooth blade idling lock core, including lock body 2, front lock core 1 and rear lock core 11 in lock body 2, front lock core 1 is provided with several along the axis Two blade pins 7 are a group of vane pins, a blade return spring 16 is provided between the two blade pins 7; a gap 19 is provided on one side of each vane pin 7, and a rectangular lock hole 18 is provided in the middle. On the side of the lock hole 18, there is a protruding part 21 that can cooperate with the boss (external milling teeth) 20 with teeth on the key 17; The matching locking side column 5 that can move axially, the locking side column 5 is provided with a tooth mouth 6 to cooperate with the blade pin 7, and the gap 19 on the blade pin 7 cooperates with the locking side column 5; on the front and rear lock cores A sleeve 3 is sleeved, and a locking side column axial return spring 4 is arranged between the locking side column 5 and the end wall of the locking side column groove; The tail 22 of the pin 8 is tapered; the tail of the lock body is provided with a step 13 that stops the rear lock cylinder 11, and the step 13 is provided with a tapered groove 9 that matches the tail 22 of the lock pin; the sleeve 3 is fixed on the front On the lock cylinder 1, the sleeve 3 and the rear lock cylinder 11 are in clearance fit, and the rear lock cylinder 11 is provided with an elastic positioning ball composed of a steel ball 14 and a spring 15, and the sleeve 3 is provided with a hole to cooperate with the steel ball 14; A lock ruler 12 is provided on the rear lock cylinder 11 .

The working principle of the present utility model: see Fig. 1 to Fig. 3 when unlocking, insert key 17, the boss (external milling tooth) 20 with teeth pattern on key 17 cooperates with the protrusion 21 on the keyhole 18 of blade marble 7, Make the blade pins 7 in each blade pin group in the tooth opening 6 of the locking side column 5 move inward, and the notches 19 on one side of them are aligned to be in the state of matching with the locking side column 5, and the locking side column 5 can move axially , and then turn the front lock cylinder 1 according to the arrow, the rear lock cylinder is driven to rotate relative to the lock body 2 through the sleeve 3 fixed on the front lock cylinder 1, and the slope of the tapered groove 9 on the step 13 at the tail of the lock body acts on the rear The tapered tail portion 22 of the lock pin 8 in the lock core forces the lock pin 8 to overcome the elastic force of the axial return spring 4 of the lock side column and enter the lock side column groove of the front lock core 1, and the front and rear lock cores are connected into one body to realize Unlock; see Figure 4 and Figure 5 when locking, and turn the front and rear lock cylinders according to the arrows. When the lock pin 8 in the rear lock cylinder is aligned with the tapered groove on the step at the end of the lock body, the locking side column is in its axial direction. Under the action of back-moving spring, lock pin 8 is pushed back in the rear lock core to coincide with the tapered groove on the lock body afterbody step, the front and rear lock cores are separated, key 17 is extracted, and locking side post 5 returns to realize locking.

If a non-matching key or tool is used to unlock the lock, the locking side column 5 will not cooperate with the gap 19 on the blade pin 7, and cannot move axially under the stop position of the blade pin 7, even if the rear lock cylinder 11 rotates relative to the lock body 2, Under the blocking of the locking side column 5, the tapered groove 9 on the step 13 at the end of the lock body cannot force the lock pin 8 to enter the front lock cylinder 1. The sleeve 3 on 1 is connected to the rear lock core 11 by elastic positioning beads. Once the rotational torque is greater than the resistance of the elastic positioning beads to the sleeve 3, the front lock core 1 will idle with the sleeve 3 relative to the rear lock core 11. Unable to unlock.

Claims (1)

1. the lock of the outer mill teeth lamina idle-run lock core of improved employing comprises lock body, is located at preceding lock core and rear lock core in the lock body; Before lock core upper edge axis be provided with some to be one group blade marble group by two blade marbles, to be provided with the blade marble back-moving spring between two blade marbles; One side of each blade marble is provided with breach, and the centre is provided with rectangular lockhole, on the limit of lockhole, be provided with can with the protuberance that matches with the boss of tartar on the key; Before be provided with in the locking side column groove on the lock core match with blade marble can axially-movable locking side column, locking side column is provided with the tooth mouth and cooperates with blade marble, the breach on the blade marble cooperates with locking side column; On preceding lock core, be with sleeve, between the end wall of locking side column and locking side column groove, be provided with the axial back-moving spring of locking side column; Be placed with lock pin in the lock pin chute of rear lock core, the lock body afterbody is provided with the step with the rear lock core stop bit; It is characterized in that described sleeve be fixed on before on the lock core and be enclosed within on the rear lock core, sleeve and rear lock core matched in clearance are provided with the elasticity positioning bead between sleeve and rear lock core; The afterbody of described lock pin is taper; Described lock body afterbody step is provided with the cone tank that matches with the lock pin afterbody.

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