CN201268983Y - idle lock - Google Patents

Abstract

The utility model relates to an idle running lock with wide application range and simple structure, which comprises a shell, a key, a lock core, blades, a shifting block and a slide block with a tooth opening at the inner side; a clutch spring is arranged between the sliding block and the lock core, a stop post which can axially slide and blocks the sliding block to move forwards is arranged in the shell, a return spring is arranged between the stop post and the shell to enable the stop post to be subjected to elastic force pointing to the direction of the sliding block, the elastic force of the return spring is greater than that of the clutch spring, at least one part of the projection of the key hole of the lock core along the axial direction from outside to inside is projected in the end face of the stop post, so that the front end of a key at the last stage of inserting the key can push the stop post inwards; the shifting block is provided with a clutch notch matched with the clutch head at the front end of the sliding block; the clutch between the shifting block and the lock cylinder is realized by utilizing the combined action of the key, the stop column, the sliding block, the clutch spring and the reset spring.

Description

idle lock

technical field

The utility model relates to an idle lock, in particular to an idle lock with an idle clutch structure.

Background technique

In the Chinese patent CN101135202A disclosed on March 5, 2008, a kind of "idle lock with blade structure" is disclosed, which includes a front lock core and a rear lock core, and a clutch mechanism is provided on the front and rear lock cores; The locking side column groove on the front lock cylinder is provided with a locking side column and a return spring that can match the groove on the blade, and a gap that can be matched with the blade is provided on the locking side column, and a locking side column on the rear lock cylinder is connected with the locking edge. The column groove is correspondingly provided with a lock pin chute, and a lock pin and a return spring are placed in the lock pin chute, and the elasticity of the lock pin return spring is larger (smaller) than that of the locking side column return spring; At least one of the walls is in contact with the other by an inclined surface, and a step for stopping the rear lock cylinder is provided at the tail of the lock body. The disadvantage of this kind of idle lock is that the scope of application is small - it is only suitable for oblique tongues, not for square tongues and other locks that require external force to be driven by the lock cylinder for unlocking and locking; the reason is that the locking side column or lock pin must be reset by the inclined plane , and the slope is realized when the key drives the lock cylinder to rotate in the opposite direction of unlocking, giving an axial force to the lock pin or the locking side column, so for some locks that must be driven by the key to reset the lock during the locking process , then the idle lock cannot be used, because its locking pin or locking side post has just been reset before the locking process is completed.

Contents of the invention

The purpose of the utility model is to provide an idle lock with a wide application range and a simple structure in order to solve the problem of a small application range in the existing idle locks.

The purpose of this utility model is achieved in the following way: an idle lock, including a shell, a key, a lock core, a blade, a shifting block and a slider with a tooth mouth inside; wherein the lock core and the shifting block are arranged in the shell along the axial direction , the slider is located in the axial guide groove on the surface of the lock cylinder and matches the blade in the lock cylinder, the tooth opening on the inner side is equivalent to the thickness of the blade, and the thickness of the slider is equivalent to the width of the gap on the outer side of the blade. There is a technology; it is characterized in that a clutch spring is set between the slider and the lock cylinder so that the slider is subjected to a forward elastic force, and a stopper column that can slide axially and block the forward movement of the slider is arranged in the housing, the stopper column A return spring is arranged between the housing and the retaining column to receive an elastic force pointing to the direction of the slider, and the elastic force of the return spring is greater than that of the clutch spring, and the projection of the keyhole of the lock cylinder from outside to inside in the axial direction At least a part is projected on the end face of the stop post (that is, the end face of the stop post can be seen inwardly from the key hole), so that the front end of the key inserted into the key can push the stop post inward; There is a clutch notch that matches the clutch head on the front end of the slider. The action of each part during the unlocking process is as follows: gradually insert the key, the key first pushes each blade to the unlocking position, the notch on each blade faces the inner side of the slider to form an axial channel, and continues to insert the key (this process does not change the position of each blade) Position—that is, this process is the virtual stroke of the key), then the front end of the key pushes the stop post inward (overcoming the elastic force of the return spring), and the slider moves inward synchronously with the stop post under the action of the clutch spring until the clutch on the slider The head falls into the clutch notch of the dial, and the slider and the dial are connected to each other. At this time, keep pushing the key inward and turn the key, the lock cylinder drives the slider to rotate, and the slider drives the dial to rotate to realize unlocking; lock , release the hand holding down the key, and under the action of the return spring, the stopper pushes the key out of the above-mentioned virtual stroke, and the stopper also pushes the slider outward to the original position at the same time, and the clutch head on the slider It is separated from the clutch notch of the shift block. After the key is pulled out, the blade resets and enters a disordered state. At this time, if an incorrect key is inserted into the keyhole, even if the blocking column is pushed backward, the blade will be stuck inside the slider. The tooth gap prevents the slider from moving axially, so the clutch head on the slider cannot be connected with the clutch notch of the dial, even if the lock cylinder is rotated, the lock cylinder cannot drive the dial to rotate, so the lock at this time The core just spins idly relative to the housing and cannot unlock.

The idling lock is characterized in that it also includes a lock pin with a longitudinal section of "T" shape, a lock pin hole matching the lock pin is provided on the surface of the lock core, and the bottom of the lock pin hole communicates with the keyhole of the lock core , the position corresponding to the lock pin hole of the lock cylinder is provided with a pressure bead hole in the shell, a pressure bead and a pressure bead spring are placed in the bead pressure hole, and the pressure bead presses the lock core or lock pin, and the key A counterbore is provided at the corresponding position to match the inner end of the lock pin. Its function is that after the key is fully inserted, the inner end of the lock pin falls into the counterbore of the key, and the outer end surface is flat with the outer cylinder of the lock cylinder. After turning the lock cylinder, the outer end of the lock pin is limited by the inner cylinder of the housing, thereby axially moving the key. Positioning and not pulling out can prevent the key from sliding out under the action of the return spring. The advantage is that the key does not need to be pressed hard during the unlocking process. It can only be pulled out after the key is rotated to the reset position of the lock cylinder. Pulling out the key At this time, the inclined surface of the counterbore pushes the lock pin outward so that part of the outer end of the lock pin extends into the bead hole of the shell so that the key can be pulled out. After the key is completely pulled out, the lock pin resets under the action of the bead spring and the bead .

The idling lock is characterized in that a ball is placed at the outer end of the lock pin. After the key is fully inserted, the interface between the ball and the pressure ball is flush with the outer cylinder of the lock cylinder.

The idling lock is characterized in that a clutch column is provided at a position between the dial block and the lock cylinder, and ribs are provided on the outer cylindrical surface of the retaining post to match the dial block and the notch in the clutch column , the clutch notch on the shift block is set in the clutch column. That is to say, the three are connected together by the ribs on the retaining column and the shifting block and the notch in the clutch column, so that the three can rotate synchronously.

The idling lock is characterized in that a collar is provided between the clutch column and the lock core, and a clutch notch is also provided on the collar.

The idling lock is characterized in that a pushing pin is provided at a position between the blocking post and the lock cylinder, the pushing pin is matched with the through hole in the clutch post, and the inner end of the pushing pin is against the blocking post, and the outer end is against the locking pin. described slider.

The idling lock is characterized in that a positioning hole is provided at the position of the housing corresponding to the clutch notch on the shifting block, and a directional pin and a directional spring are placed in the locating hole. Its function is to make the shift block be further positioned in the locked state, so as to prevent the shift block from moving during transportation. And the directional pin that falls in the clutch notch pushs the positioning pin outwards in the process of the clutch head of the slide block inserting the clutch notch, and makes the positioning pin separate from the clutch notch.

The idling lock is characterized in that a pipe is provided between the lock cylinder and the outer shell.

The idling lock is characterized in that there are two sliders arranged on the lock cylinder and symmetrically distributed in the lock cylinder, and the two sliders are connected by an arch bridge, and the clutch head is arranged in the arch bridge. Its advantage is that the keyhole on the lock cylinder can be coaxial with the lock cylinder.

The idling lock is characterized in that the clutch spring is arranged between the arch bridge and the lock cylinder.

Due to the adoption of the technical solution described in the utility model, the coupling between the slider and the shifting block does not use a slope, but directly uses a return spring to cooperate with a stop post to reset, so the lock cylinder can directly transmit the torque regardless of forward rotation or reverse rotation. In the dial block, it can be used for both the oblique tongue and the square tongue. Even if the oblique tongue or the square tongue does not have a return spring, the lock cylinder can drive the dial to reset. It has a wide range of applications, and its structure is simple and practical.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a three-dimensional exploded view of an embodiment of the present invention.

Fig. 2 is a perspective enlarged view of another angle of the blocking post in Fig. 1 .

Fig. 3 is a perspective view of the assembled components in Fig. 1 .

Fig. 4 is a perspective enlarged view of another angle of the slider in Fig. 1 .

Fig. 5 is a perspective enlarged view of another angle of the shifting block in Fig. 1 .

Fig. 6 is a perspective enlarged view of another angle of the lock cylinder in Fig. 1 .

Fig. 7 is a partial perspective view of the shell, shift block, clutch column and collar in Fig. 3 after being cut in half.

Marking in the figure, 1, handle, 103, card slot, 102, blind hole, 11, return spring, 12, retaining column, 121, 122, rib, 101, notch, 203, notch, 202, through hole, 2 , clutch column, 201, clutch notch, 21, collar, 211, clutch notch, 212, through hole, 23, sales pin, 311, clutch head, 32, clutch spring, 31, slider, 312, arch bridge, 301 , guide groove, 42, blade, 303, keyhole, 302, lock pin hole, 3, lock cylinder, 41, blade, 33, lock pin, 5, tube, 501, through hole, 6, shell, 601, gap, 701, shifting head, 7, shifting block, 603, pressing ball hole, 34, ball, 35, pressing ball, 36, pressing ball spring, 24, orientation pin, 25, orientation spring, 602, positioning hole, 8, key, 702, notch, 801, counterbore.

Detailed ways:

See Fig. 1, it is a specific embodiment of the idling lock described in the utility model, can be used for mortise door lock, it comprises shell 6, key 8 (see Fig. 3), lock cylinder 3, respectively by four blades 41 and 42 Two sets of left and right blade groups, shifting block 7 and two sliders 31 with teeth on the inside are formed, wherein the two sliders are connected by an arch bridge 312 and a clutch head 311 protrudes from the middle of the arch bridge 312, and the lock cylinder 3 two The side surfaces are respectively provided with guide grooves 301 to cooperate with the two sliders 31, the clutch spring 32 is arranged between the arch bridge 311 and the lock cylinder, the inner handle 1 is located on the inner side of the door, and the return spring 11 and the two sides A retaining column 12 with ribs 121 and 122, wherein the ribs 121 and 122 are respectively matched with the notches 101 on the inner handle (both sides of the inner handle are provided with notches), and the right end of the retaining column 12 is located outside the blind hole 102 and extends Into the dial block 7 and the clutch column 2, its ribs 122 are respectively matched with the notch 702 (see Figure 5) in the shift block and the notch 203 in the clutch column (see Figure 7 for the specific installation position); the longitudinal section is "T After the "shaped lock pin 33 is matched with the lock pin hole 302 of the lock cylinder, the outer end of the lock pin 33 is put on a ball 34, and a pressure ball hole 603 with a built-in pressure ball 35 and a pressure ball spring 36 is opened at the corresponding position of the shell 6. (The outermost end of the bead-pressing hole 603 is provided with a sealing bead to seal the tail of the bead-pressing spring 36). The left end of the push pin 23 passes through the through hole 212 of the collar 21 and the through hole 202 of the clutch post 2 respectively, and pushes against the right end face of the blocking post 12, and its right end pushes against the left side of the arch bridge 312 of the slide block. The clutch head 311 that the arch bridge left end of slide block stretches out is matched with the clutch notch 211 of collar 21 and the clutch notch 201 of clutch post; Offer the locating hole 602 of built-in directional pin 24 and directional spring 25 on the shell (similarly, in This locating hole outer end is also fixed with the sealing bead that pushes against directional spring 25 afterbody), and directional pin 24 inner ends can stretch into the clutch notch 211 of collar 21 and play directional effect to collar. After each blade and slide block etc. are installed into the lock cylinder, they are inserted into the pipe 5 and then put into the shell.

See Fig. 7, when unlocking, insert the key 8 gradually, the front end of the key 8 pushes the lock pin 33 upwards, and continues to insert the key 8 to push each blade 42 to the unlocking position. To the channel, continue to insert the key (this process does not change the position of each blade—that is, this process is the virtual stroke of the key), then the front end of the key passes through the arch bridge of the slider to push the push pin 23 to the left, and the push pin 23 pushes the stop post 12 to the left. Left top, the slider drives the clutch head 311 into the clutch notch 211 of the collar under the action of the clutch spring 32 and pushes the directional pin 24 out of the clutch notch 211 until the clutch head 311 is inserted into the clutch notch 201 of the clutch column 2, The ball 34 in the pressure ball hole in the shell pushes the lock pin 33 into the counterbore 801 of the key, and at the same time the topmost point of the ball 34 is flat with the outer cylindrical surface of the lock cylinder. When the key is turned, the slider, The collar, the clutch column, and the shifting block rotate together to unlock the lock. Only the lock core needs to be rotated through a small angle, and then the ball 34 is misaligned with the ball-pressing hole, and the outer apex of the ball bears against the inner wall of the pipe 5 in Fig. The head of the lock pin 33 cannot be separated from the counterbore of the key, so that the key cannot move axially; when locking, rotate the lock cylinder to the reset position, then pull the key outward, and the key pushes the lock pin 33 upward to make the ball 34 enter In the bead hole of the shell, the key can be moved backwards. During the extraction process, the key is first moved back to its virtual position, and the stop post 12 pushes the push pin 23 to the right under the action of the reset spring 11, and the push pin 23 pushes the slide block to the right through the arch bridge of the slide block. OK, the clutch head 311 is separated from the clutch post and the clutch notch on the collar until the slider is completely reset, and after the key is continued to be drawn out, the blades are also reset to a disordered state and will enter the tooth openings on the inside of the slider to slide At this time, if a non-original key is used to unlock the lock, because the slider cannot move axially, the clutch head on the slider cannot enter the clutch notch in the clutch column, and the clutch column cannot be connected to the slider. Therefore, the lock cylinder can only idle and cannot be unlocked.

If you control the opening and closing lock inside the door, you only need to hold the inner handle and rotate it, then the inner handle will drive the retaining column, the shifting head and the clutch sleeve to rotate. If the clutch head on the block is used to unlock the door with a key, it is only necessary to fully insert the key, and then the lock cylinder drives the collar to rotate until the clutch head on the slider is facing the clutch notch of the clutch column, and then the clutch head is ready. Slide into the clutch notch of the clutch column to connect the two.

In fact, the sales pin, the clutch column and the collar in Fig. 7 can also be omitted, and the clutch notch is directly opened on the shift block, and the right end of the stop post is lengthened to the right end of the sales pin, then the purpose of the utility model can also be realized. It can be realized by those of ordinary skill on the basis of the technology of the present invention, so it will not be repeated here.

Claims (10)

1, a kind of idle running lock comprises the slide block of shell, key, lock core, blade, shifting block and inboard band tooth mouth, wherein lock core and shifting block vertically front and rear row be listed in the shell; It is characterized in that being provided with between described slide block and the lock core clutch spring, setting can endwisely slip and stop the bumping post that described slide block moves forward in the shell, back-moving spring is set between this bumping post and the shell makes bumping post be subjected to pointing to the elastic force of described slide block direction, and the elastic force of described back-moving spring is greater than the elastic force of described clutch spring, and the keyhole of described lock core is being projected in the end face that a rare part is projected in described bumping post of ecto-entad vertically; Shifting block is provided with the clutch notch that the clutch head with slip front matches.

2, according to the described idle running lock of claim 1, it is characterized in that also comprising that a longitudinal section is "T"-shaped lock pin, be provided with the lockpin hole that matches with this lock pin in plug face, this lockpin hole bottom communicates with the keyhole of lock core, be provided with the pressure hole of bead with the corresponding position of the lockpin hole of lock core in the shell, place to press pearl in this pressure hole of bead and press the pearl spring and press pearl to push down described lock core or lock pin, have counterbore in the corresponding position of described key and lock pin the inner matches.

3, according to the described idle running lock of claim 2, it is characterized in that described lock pin outer end placement ball.

4, according to the described idle running lock of claim 1, it is characterized in that the position between described shifting block and lock core is provided with the clutch post, the notch that described bumping post outer cylinder is provided with in muscle and described shifting block and the clutch post matches, and the clutch notch on the described shifting block is arranged in this clutch post.

5, according to the described idle running lock of claim 4, it is characterized in that the position between described clutch post and lock core is provided with the collar, also be provided with the clutch notch on this collar.

6, according to the described idle running of claim 4 lock, it is characterized in that the position between described bumping post and lock core is provided with distribution, the through hole in this distribution and the described clutch post matches and promotes that the inner props up bumping post, the outer end props up described slide block.

7, according to the described idle running lock of claim 1, it is characterized in that the position of the clutch notch on the corresponding described shifting block of described shell is provided with locating hole, place directed pin and directed spring in this locating hole.

8, according to the described idle running lock of claim 1, it is characterized in that between described lock core and shell, being provided with pipe.

9, according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 described idle running lock, it is characterized in that the described slide block that is arranged on the lock core has two and be distributed in symmetrically in the lock core, with arch bridge connection, described clutch head is arranged in this arch bridge between two slide blocks.

10, according to the described idle running lock of claim 9, it is characterized in that described clutch spring is arranged between this arch bridge and the lock core.

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