CN215168923U - Lock body - Google Patents

Abstract

The utility model relates to a lock body technical field especially relates to a lock body. In order to conveniently unlock the backstop function of the latch bolt of the door lock, the utility model provides a lock body, wherein, the latch bolt and the anti-inserting bolt are arranged in the lock frame, and the anti-inserting bolt is provided with a limit groove; the stopping mechanism is arranged on the stopping positioning column, and the connecting end of the stopping mechanism is positioned between the stopping limiting column and the anti-insertion tongue and is inserted into the limiting groove; in the unlocking mechanism, an unlocking plate and an unlocking torsion spring are arranged on an unlocking positioning column, and the unlocking torsion spring is connected with the unlocking plate; the positioning end of the unlocking transmission part is arranged on the transmission positioning column, and the unlocking end of the unlocking transmission part extends to the unlocking plate; the unlocking wheel is arranged on the handle square rod and is connected with the unlocking transmission part; the unlocking mechanism pushes the retaining mechanism to rotate around the retaining positioning column, so that the retaining mechanism loosens the latch bolt. The utility model discloses the lock body utilizes the unlocking mechanism who unlocks board, unblock torsional spring, unblock driving medium, transmission torsional spring and unlocking wheel constitute to accomplish the unblock function of oblique tongue, simple structure, and is more light and handy.

Description

Lock body

Technical Field

The utility model relates to a lock technical field especially relates to a lock body.

Background

At present, most of common door locks in the market do not have the latch bolt backstop function, and although few door locks have the latch bolt backstop function, at least 7 parts are needed for completing unlocking of the latch bolt backstop function, so that the door lock is complex in structure and heavy.

SUMMERY OF THE UTILITY MODEL

In order to conveniently unlock the stop function of the latch bolt of the door lock, the utility model provides a lock body, which comprises a lock frame, a latch bolt, an anti-insertion bolt, a stop mechanism and an unlocking mechanism, wherein a stop positioning column, a stop limiting column and an unlocking positioning column are arranged on the bottom plate of the lock frame;

the oblique tongue and the anti-insertion tongue are arranged in the lock frame, the oblique tongue is positioned between the anti-withdrawal positioning column and the anti-withdrawal limiting column, and a limiting groove is formed in the limiting surface, facing the bottom plate, of the anti-insertion tongue;

the retaining mechanism is arranged on the retaining positioning column, and the connecting end of the retaining mechanism is positioned between the retaining limiting column and the insertion-preventing tongue and is inserted into the limiting groove; when the anti-insertion tongue retracts into the lock frame, the anti-insertion tongue releases the retaining mechanism, and the retaining mechanism supports against the inclined tongue to enable the inclined tongue to be in a retaining state; when the anti-inserting tongue extends out of the lock frame, the anti-inserting tongue drives the retaining mechanism to rotate and enables the retaining mechanism to loosen the inclined tongue;

the unlocking mechanism comprises an unlocking plate, an unlocking torsion spring, an unlocking transmission part, a transmission torsion spring and an unlocking wheel, the unlocking plate and the unlocking torsion spring are mounted on the unlocking positioning column, and the unlocking torsion spring is connected with the unlocking plate; the positioning end of the unlocking transmission part is arranged on the transmission positioning column on the bottom plate, and the unlocking end of the unlocking transmission part extends to the unlocking plate; the unlocking wheel is arranged on the handle square rod and is connected with the unlocking transmission piece; work as when the latch bolt is in the stopping state, the unblock end of unblock driving medium supports the unlocking plate rotates handle square bar drives the unblock wheel rotates, the unblock wheel drives the unblock driving medium rotates and makes the unblock end of unblock driving medium loosens the unlocking plate, the unlocking plate is in wind under the promotion of unblock torsional spring the unblock reference column rotates and makes the unlocking plate promotes stopping mechanism winds the stopping reference column rotates, and makes stopping mechanism loosens the latch bolt.

The utility model discloses in the lock body, when stopping mechanism supported the latch bolt and made the latch bolt be in the stopping state, the accessible handle square bar was stirred the unlocking wheel and is made the unlocking wheel drive the resistance rotation that the unblock driving medium overcame the transmission torsional spring to make the unblock driving medium loosen the unlocking plate, make the unlocking plate rotate and promote the stopping mechanism and rotate around the stopping reference column around the unblock reference column under the promotion of unblock torsional spring, and then make the stopping mechanism loosen the latch bolt, accomplish the unblock of latch bolt. Therefore, the utility model discloses the lock body only needs to utilize the release mechanism who comprises unlocking plate, unblock torsional spring, unblock driving medium, transmission torsional spring and unblock wheel to accomplish the unblock function of oblique tongue, and not only the unblock is simple and convenient, and release mechanism's simple structure, can make the lock body more light and handy, can reduce the cost of manufacture of lock body simultaneously.

Preferably, the unblock driving medium includes unblock driving plate, V type connecting block and position sleeve, V type connecting block is fixed unblock driving plate is last and the opening dorsad the unblock wheel, the position sleeve is fixed unblock driving plate is last and the cover is put on the transmission reference column. Like this, unblock driving medium accessible V type connecting block and unblock wheel cooperation to accessible makes the unblock driving plate rotate around the transmission reference column around applying force to V type connecting block when making the unblock wheel rotate under the drive of handle square stick, accomplishes the unblock function, equipment convenience simple to use. Furthermore, the unlocking wheel comprises a wheel sleeve, two clamping feet are arranged on the outer wall of the wheel sleeve, and the two clamping feet are oppositely arranged to form a V-shaped clamping groove for clamping the V-shaped connecting block. Therefore, when the unlocking mechanism is assembled, the V-shaped connecting block in the unlocking transmission part can be inserted into the V-shaped clamping groove on the unlocking wheel, and the assembly is simple and convenient.

Preferably, the retaining mechanism comprises a transmission plate and a retaining torsion spring, and the transmission plate is mounted on the retaining positioning column on the bottom plate and can rotate around the retaining positioning column; the stopping torsional spring cover is put on the stopping reference column and with the driving plate is connected, works as prevent inserting the tongue indentation in the lock frame, the stopping torsional spring promotes the driving plate rotates and makes the stopping end of driving plate supports the oblique tongue makes the oblique tongue is in the stopping state. Like this, the stopping mechanism comprises driving plate and stopping torsional spring, simple structure, and when the latch bolt is in the unblock state, as long as loosen the handle, can drive the unblock wheel through the handle square bar and reset to make the unblock driving medium reset in order to support the unlocking plate under the drive of unblock torsional spring, and then make the unlocking plate loosen the driving plate in the stopping mechanism so that the driving plate supports the latch bolt under the promotion of stopping torsional spring, makes the latch bolt be in the stopping state. Furthermore, the transmission plate is provided with a retaining block, and the retaining block is fixed at the retaining end of the transmission plate and close to the latch bolt. Like this, set up the stopping piece at the stopping end of driving plate, when the stopping end of driving plate is supporting the latch bolt, usable stopping piece locking latch bolt improves the utility model discloses the stability of the stopping function of latch bolt in the lock. Further preferably, the twisting and pushing end of the retaining torsion spring is abutted against the retaining block. Therefore, in the using process, the twisting and pushing end of the retaining torsion spring can be utilized to abut against the retaining block, so that the twisting and pushing end of the retaining torsion spring is conveniently connected with the retaining end of the transmission plate and pushes the rotating plate to rotate around the retaining positioning column. Still further preferably, a positioning ring is disposed at a positioning end of the anti-back torsion spring, and the positioning ring is sleeved on a torsion spring positioning column which is located on the bottom plate and close to the anti-back positioning column. Like this, in the assembling process, usable cover establishes the holding ring on the torsional spring reference column and holds fixedly with the location of stopping the torsional spring, avoids the location end of stopping the torsional spring to take place to shift or misplace in equipment or use, and influences the utility model discloses the realization of the stopping function of the oblique tongue of lock body influences even the utility model discloses the use of lock body.

Preferably, the oblique tongue comprises an oblique tongue, an oblique tongue guide rod and an oblique tongue spring, the oblique tongue is inserted into the oblique tongue hole, and the tail end of the oblique tongue is connected with the oblique tongue guide rod; the oblique tongue guide rod is erected on the oblique tongue limiting plate on the bottom plate, the free end of the oblique tongue guide rod penetrates through a guide limiting groove on the oblique tongue limiting plate, and a limiting clamping plate is arranged on the free end of the oblique tongue guide rod; the oblique tongue spring is sleeved on the oblique tongue guide rod and clamped between the oblique tongue and the oblique tongue limiting plate. Therefore, in the using process, when the lock is unlocked, the inclined tongue can retract into the lock frame under the pulling of the inclined tongue guide rod; when locking, the oblique tongue piece can be pushed by the oblique tongue spring to extend out of the lock frame. Therefore, the oblique tongue in the lock body of the utility model consists of the oblique tongue head, the oblique tongue guide rod and the oblique tongue spring, has simple structure, and in the use process, the oblique tongue retracts into the lock frame under the pulling of the oblique tongue guide rod or stretches out of the outside of the lock frame under the pushing of the oblique tongue spring, thereby being convenient to control. In addition, in the lock body of the utility model, the oblique tongue guide rod passes through the guide limiting groove on the oblique tongue limiting plate, and the guide limiting groove can be used for guiding and limiting the movement direction of the oblique tongue guide rod, so as to avoid the problem of dislocation of the oblique tongue in the movement process; set up spacing cardboard on keeping away from the free end of oblique tongue at oblique tongue guide arm, can avoid oblique tongue guide arm to promote oblique tongue when stretching out the lock frame outside from the slippage on the oblique tongue limiting plate at oblique tongue spring, influence the utility model discloses the use of lock body.

Preferably, the anti-insertion tongue is provided with a reset hole towards the tail end of the anti-insertion tongue limiting plate, the anti-insertion tongue limiting plate is provided with a connection limiting column towards the limiting surface of the anti-insertion tongue, the connection limiting column is sleeved with an anti-insertion tongue reset spring, and the reset end of the anti-insertion tongue reset spring is inserted into the reset hole. Therefore, the anti-insertion tongue can be connected with the connection limiting column on the anti-insertion tongue limiting plate through the anti-insertion tongue return spring, the assembly is simple and convenient, the anti-insertion tongue can be pushed to extend out of the lock frame by directly utilizing the tension action of the anti-insertion tongue return spring after being retracted into the lock frame, and the use is simple and convenient. Furthermore, the top and the bottom of the tail end of the anti-insertion tongue are provided with guide blocks, and the guide blocks are inserted into guide sliding grooves in the bottom plate and the top plate of the lock frame. Like this, prevent inserting the tongue and contract back and the in-process that stretches out, usable guide block leads with the bottom plate of lock frame and the cooperation of the direction spout on the roof, avoids preventing inserting the tongue and returning back and stretch out the time direction of motion deviation, influence the utility model discloses the use of lock body.

Drawings

Fig. 1 is a schematic structural view of the lock body of the present invention;

fig. 2 is a schematic top view of the latch bolt in the lock body of the present invention in a non-return state;

fig. 3 is a schematic top view of the latch bolt in the lock body according to the present invention in an unlocked state.

Detailed Description

The lock body of the present invention will be described in detail with reference to fig. 1 to 3.

As shown in fig. 1-3, the lock body of the present invention comprises a lock frame 1, a latch bolt, an anti-insertion bolt 3, a retaining mechanism and an unlocking mechanism. The bottom plate 11 of the lock frame 1 is provided with a retaining positioning column 111, a retaining limiting column 112 and an unlocking positioning column 113. Preferably, the lock surface 12 of the lock frame 1 is provided with an oblique tongue hole and an anti-insertion tongue hole, the bottom plate 11 of the lock frame 1 is provided with an oblique tongue limiting plate 114 and an anti-insertion tongue limiting plate 115, the oblique tongue limiting plate 114 is opposite to the oblique tongue hole, and the anti-insertion tongue limiting plate 115 is opposite to the anti-insertion tongue hole. Like this, when equipment or use the utility model discloses during the lock body, usable oblique tongue limiting plate 114 carries on spacingly to the mounted position, the motion range and the direction of motion of oblique tongue, utilizes to prevent inserting tongue limiting plate 115 and carries on spacingly to the mounted position, the motion range and the direction of motion of preventing inserting tongue 3, convenient equipment to can avoid the oblique tongue and prevent that the tongue appears out of bounds or the direction skew, facilitate the use in the use. Preferably, the latch tongue limiting plate 114 and the anti-latch tongue limiting plate 115 are inserted on the base plate 11. Such oblique tongue limiting plate 114 and prevent inserting tongue limiting plate 115 simple manufacture and equipment convenience to can reduce the utility model discloses the manufacturing cost of lock body.

The latch bolt is installed in the lock frame 1 and is located between the backstop positioning column 111 and the transmission limiting column 113. Preferably, the oblique tongue comprises an oblique tongue 21, an oblique tongue guide rod 22 and an oblique tongue spring 23, the oblique tongue 21 is inserted into the oblique tongue hole, and the tail end of the oblique tongue head 21 is connected with the oblique tongue guide rod 22; the latch bolt guide rod 22 is erected on the latch bolt limiting plate 114 on the bottom plate 11, the free end of the latch bolt guide rod 22 penetrates through a guide limiting groove 1141 on the latch bolt limiting plate 114, and a limiting clamping plate 221 is arranged on the free end of the latch bolt guide rod 22; the oblique tongue spring 23 is sleeved on the oblique tongue guide rod 22 and clamped between the oblique tongue 21 and the oblique tongue limiting plate 14. Thus, in the using process, when the lock is unlocked, the latch bolt head 21 can retract into the lock frame 1 under the pulling of the latch bolt guide rod 22; when locking, the oblique tongue 21 can be pushed by the oblique tongue spring 23 to extend out of the lock frame 1. Therefore, the oblique tongue in the lock body of the utility model consists of the oblique tongue head 21, the oblique tongue guide rod 22 and the oblique tongue spring 23, the structure is simple, and in the use process, the oblique tongue 21 retracts into the lock frame 1 under the pulling of the oblique tongue guide rod 22 or stretches out of the lock frame 1 under the pushing of the oblique tongue spring 23, and the control is convenient. In addition, in the lock body of the utility model, the latch bolt guide rod 22 passes through the guide limit groove 1141 on the latch bolt limit plate 114, and the guide limit groove 1141 can be used for guiding and limiting the movement direction of the latch bolt guide rod 22, so as to avoid the problem of dislocation of the latch bolt in the movement process; set up spacing cardboard 221 on oblique tongue guide arm 22 keeps away from the free end of oblique tongue 21, can avoid oblique tongue guide arm 22 to promote oblique tongue 21 at oblique tongue spring 23 and stretch out the slippage on the oblique tongue limiting plate 114 when locking frame 1 is outside, influence the utility model discloses the use of lock body.

The anti-insertion tongue 3 is arranged in the lock frame 1, and a limit groove 31 is arranged on the limit surface of the anti-insertion tongue 3 facing the bottom plate 11. Preferably, the anti-insertion tongue 3 is provided with a reset hole 32 towards the tail end of the anti-insertion tongue limiting plate 115, a connection limiting column 1151 is provided on the limiting surface of the anti-insertion tongue limiting plate 115 towards the anti-insertion tongue 3, the anti-insertion tongue reset spring 6 is sleeved on the connection limiting column 1151, and the reset end of the anti-insertion tongue reset spring 6 is inserted into the reset hole 32. Therefore, the anti-insertion tongue 3 can be connected with the connection limiting column 1151 on the anti-insertion tongue limiting plate 115 through the anti-insertion tongue return spring 6, the assembly is simple and convenient, and after the anti-insertion tongue 3 retracts into the lock frame 1, the tension action of the anti-insertion tongue return spring 6 can be directly utilized to push the anti-insertion tongue 3 to enable the anti-insertion tongue 3 to extend out of the lock frame 1, and the use is simple and convenient. Preferably, the guide blocks 33 are provided at the top and bottom of the tail end of the anti-insertion tongue 3, and the guide blocks 33 are inserted into the guide sliding grooves 116 on the bottom plate 11 and the top plate (not shown in the figure) of the lock frame 1. Like this, prevent that insertion tongue 3 contracts and the in-process that stretches out, usable guide block 33 leads with the cooperation of the bottom plate 11 of lock frame 1 and the direction spout 116 on the roof, avoids preventing that insertion tongue 3 moves the direction and the deviation appears when retracting and stretching out, influences the utility model discloses the use of lock body.

The retaining mechanism is arranged on the retaining positioning column 111, and the connecting end of the retaining mechanism is positioned between the retaining limiting column 112 and the anti-insertion tongue 3 and is inserted into the limiting groove 31; when the anti-insertion tongue 3 retracts into the lock frame 1, the anti-insertion tongue 3 releases the retaining mechanism, and the retaining mechanism supports against the inclined tongue 21 of the inclined tongue to enable the inclined tongue to be in a retaining state; when the anti-inserting tongue 3 extends out of the lock frame 1, the anti-inserting tongue 3 drives the retaining mechanism to rotate and enables the retaining mechanism to loosen the inclined tongue head 21 of the inclined tongue so as to enable the inclined tongue to be in an unlocking state. Preferably, the retaining mechanism comprises a transmission plate 41 and a retaining torsion spring 42, the transmission plate 41 is mounted on the retaining positioning column 111 on the bottom plate 11 and can rotate around the retaining positioning column 111; the retaining torsion spring 42 is sleeved on the retaining positioning column 111 and connected with the transmission plate 41, when the anti-insertion tongue 3 retracts into the lock frame 1, the retaining torsion spring 42 pushes the transmission plate 41 to rotate and enables the retaining end of the transmission plate 41 to abut against the latch bolt head 21 of the latch bolt, so that the latch bolt is in a retaining state. Thus, the retaining mechanism is composed of the transmission plate 41 and the retaining torsion spring 42, the structure is simple, and when the latch bolt is in the unlocking state, the transmission plate 41 in the retaining mechanism can be loosened through the unlocking mechanism so that the transmission plate 41 is propped against the latch bolt head 21 in the latch bolt under the pushing of the retaining torsion spring 42, and the latch bolt is in the retaining state. Preferably, the driving plate 41 is provided with a retaining block 411, and the retaining block 411 is fixed at the retaining end of the driving plate 41 and close to the oblique tongue 21 of the oblique tongue. Like this, set up stopping block 411 at the stopping end of driving plate 41, when the stopping end of driving plate 41 is supporting oblique tongue 21 of oblique tongue, usable stopping block 411 locks oblique tongue 21 of oblique tongue, improves the utility model discloses the stability of the stopping function of oblique tongue in the lock body. Preferably, the torsion end of the anti-backing torsion spring 42 abuts against the anti-backing block 411. Thus, in the using process, the twisting end of the retaining torsion spring 42 can be used to abut against the retaining block 411, so that the twisting end of the retaining torsion spring 42 is conveniently connected with the retaining end of the transmission plate 41 and pushes the rotating plate 41 to rotate around the retaining positioning column 111. Preferably, the positioning end of the anti-backup torsion spring 42 is provided with a positioning ring 421, and the positioning ring 421 is sleeved on the torsion spring positioning column 117 located on the bottom plate 11 and close to the anti-backup positioning column 111. Like this, in the assembling process, usable cover establishes the holding ring 421 on torsional spring reference column 117 and holds the location of stopping torsional spring 42 fixedly, avoids the location end of stopping torsional spring 42 to take place to shift or misplace in equipment or use, and influences the utility model discloses the realization of the stopping function of the oblique tongue of lock body influences even the utility model discloses the use of lock body.

The unlocking mechanism comprises an unlocking plate 51, an unlocking torsion spring 52, an unlocking transmission piece 53, a transmission torsion spring 54 and an unlocking wheel 55, wherein the unlocking plate 51 and the unlocking torsion spring 52 are arranged on the unlocking positioning column 113, and the unlocking torsion spring 52 is connected with the unlocking plate 51; the positioning end of the unlocking transmission piece 53 is arranged on the transmission positioning column 118 on the bottom plate 11, and the unlocking end of the unlocking transmission piece 53 extends to the unlocking plate 51; the unlocking wheel 55 is mounted on a handle bar (not shown) and connected to the unlocking transmission member 53; when the latch bolt is in the stop state, the unlocking end of the unlocking transmission piece 53 abuts against the unlocking plate 51, the handle square bar is rotated to drive the unlocking wheel 55 to rotate, the unlocking wheel 55 drives the unlocking transmission piece 53 to rotate, so that the unlocking end of the unlocking transmission piece 53 releases the unlocking plate 51, the unlocking plate 51 rotates around the transmission positioning column 118 under the pushing of the unlocking torsion spring 52, so that the unlocking plate 51 pushes the transmission plate 41 in the stop mechanism to rotate around the stop positioning column 111, and the transmission plate 41 in the stop mechanism releases the latch bolt 21 in the latch bolt. Preferably, the unlocking plate 51 is provided with a torsion spring catch 511, and the torsion spring catch 511 is located at one end of the unlocking plate 51 away from the backstop end of the backstop mechanism. Thus, during assembly, the rebounding end of the unlocking torsion spring 52 can be inserted into the buckling groove on the torsion spring buckle 511, so that the unlocking torsion spring 52 is utilized to push the unlocking plate 51 to rotate around the unlocking positioning column 113 in the unlocking process, the unlocking plate 51 pushes the transmission mechanism to rotate around the stopping positioning column 111 to drive the transmission mechanism to loosen the latch bolt head 21 in the latch bolt, and unlocking is completed. Preferably, the unlocking transmission member 53 includes an unlocking transmission plate 531, a V-shaped connection block 532 and a positioning sleeve 533, the V-shaped connection block 532 is fixed on the unlocking transmission plate 531 and has an opening facing away from the unlocking wheel 55, and the positioning sleeve 533 is fixed on the unlocking transmission plate 531 and is sleeved on the transmission positioning column 118. Thus, the unlocking transmission piece 53 can be matched with the unlocking wheel 55 through the V-shaped connecting block 532, so that the unlocking wheel 55 can rotate under the driving of the handle square rod by applying force to the V-shaped connecting block 532 to enable the unlocking transmission plate 531 to rotate around the transmission positioning column 118, the unlocking function is completed, and the assembly and the use are simple and convenient; in addition, transmission torsional spring 54 can overlap and put on locating sleeve 533, and the location end of transmission torsional spring 54 supports on the inside wall of lock frame 1, and the return end of transmission torsional spring 54 supports and leans on V type connecting block 532 to transmission torsional spring 54 promotes the unblock driving medium 53 to reset after the unblock is accomplished, and then makes the utility model discloses oblique tongue of lock body resumes the stopping state from the unblock state. Preferably, the unlocking wheel 55 comprises a wheel sleeve 551, two clamping feet 552 are arranged on the outer wall of the wheel sleeve 551, and the two clamping feet 552 are oppositely arranged to form a V-shaped clamping groove 553 for clamping the V-shaped connecting block 532. Thus, when the unlocking mechanism is assembled, the V-shaped connecting block 532 in the unlocking transmission member 53 can be inserted into the V-shaped clamping groove 553 on the unlocking wheel 55, and the assembly is simple and convenient.

The utility model discloses the lock body utilizes stopping mechanism to realize the stopping function of oblique tongue in the use, utilizes unlocking mechanism to realize the unblock function of oblique tongue. The utility model discloses oblique tongue in the lock body is from stopping state to the change in-process of unblock state, stopping mechanism, release mechanism, oblique tongue and prevent inserting the concrete linkage process between the tongue as follows:

as shown in fig. 2, after the handle is released, the unlocking transmission member 53 is in the locking position under the pushing of the transmission torsion spring 54, the unlocking end of the unlocking plate 53 extends to the unlocking end of the unlocking plate 51 to abut against one end of the unlocking plate 51 close to the stopping end of the transmission plate 41, the unlocking plate 51 overcomes the resistance of the unlocking torsion spring 52 and rotates around the unlocking positioning column 113 to release the transmission plate 41, the transmission plate 41 overcomes the resistance of the insertion-preventing tongue return spring 4 abutting against the insertion-preventing tongue 3 under the pushing of the stopping torsion spring 42 and rotates around the stopping positioning column 111 to enable the stopping end of the transmission plate 41 to abut against the oblique tongue 21 of the oblique tongue, and thus the oblique tongue is in the stopping state.

As shown in fig. 3, when the handle square bar is driven to rotate by the handle, the handle square bar drives the unlocking wheel 55 to rotate, the unlocking wheel 55 pushes the unlocking transmission member 53 to rotate around the transmission positioning column 118 against the resistance of the transmission torsion spring 54, so that the unlocking transmission member 53 releases the unlocking plate 51, the unlocking plate 51 rotates around the unlocking positioning column 113 and abuts against the transmission plate 41 under the pushing of the unlocking torsion spring 52, the transmission plate 41 is pushed to rotate against the resistance of the anti-backing torsion spring 42, the anti-backing end of the transmission plate 41 is released and is away from the oblique tongue 21 of the oblique tongue, and the unlocking of the oblique tongue is completed.

To sum up, the utility model discloses in the lock body, when stopping mechanism supports the latch bolt and makes the latch bolt be in the stopping state, the accessible handle square bar stirs the unlocking wheel and makes the unlocking wheel drive the resistance that the unblock driving medium overcame the transmission torsional spring and rotate to make the unblock driving medium loosen the unlocking plate, make the unlocking plate rotate and promote the stopping mechanism and rotate around the stopping reference column around the unblock reference column under the promotion of unblock torsional spring, and then make the stopping mechanism loosen the latch bolt, accomplish the unblock of latch bolt. Therefore, the utility model discloses the lock body only needs to utilize the release mechanism who comprises unlocking plate, unblock torsional spring, unblock driving medium, transmission torsional spring and unblock wheel to accomplish the unblock function of oblique tongue, and not only the unblock is simple and convenient, and release mechanism's simple structure, can make the lock body more light and handy, can reduce the cost of manufacture of lock body simultaneously.

Claims (10)

1. A lock body is characterized by comprising a lock frame, a latch bolt, an insertion-preventing bolt, a backstop mechanism and an unlocking mechanism, wherein a backstop positioning column, a backstop limiting column and an unlocking positioning column are arranged on a bottom plate of the lock frame;

the oblique tongue and the anti-insertion tongue are arranged in the lock frame, the oblique tongue is positioned between the anti-withdrawal positioning column and the anti-withdrawal limiting column, and a limiting groove is formed in the limiting surface, facing the bottom plate, of the anti-insertion tongue;

the retaining mechanism is arranged on the retaining positioning column, and the connecting end of the retaining mechanism is positioned between the retaining limiting column and the insertion-preventing tongue and is inserted into the limiting groove; when the anti-insertion tongue retracts into the lock frame, the anti-insertion tongue releases the retaining mechanism, and the retaining mechanism supports against the inclined tongue to enable the inclined tongue to be in a retaining state; when the anti-inserting tongue extends out of the lock frame, the anti-inserting tongue drives the retaining mechanism to rotate and enables the retaining mechanism to loosen the inclined tongue;

the unlocking mechanism comprises an unlocking plate, an unlocking torsion spring, an unlocking transmission part, a transmission torsion spring and an unlocking wheel, the unlocking plate and the unlocking torsion spring are mounted on the unlocking positioning column, and the unlocking torsion spring is connected with the unlocking plate; the positioning end of the unlocking transmission part is arranged on the transmission positioning column on the bottom plate, and the unlocking end of the unlocking transmission part extends to the unlocking plate; the unlocking wheel is arranged on the handle square rod and is connected with the unlocking transmission piece; work as when the latch bolt is in the stopping state, the unblock end of unblock driving medium supports the unlocking plate rotates handle square bar drives the unblock wheel rotates, the unblock wheel drives the unblock driving medium rotates and makes the unblock end of unblock driving medium loosens the unlocking plate, the unlocking plate is in wind under the promotion of unblock torsional spring the unblock reference column rotates and makes the unlocking plate promotes stopping mechanism winds the stopping reference column rotates, and makes stopping mechanism loosens the latch bolt.

2. The lock of claim 1, wherein said unlocking actuator comprises an unlocking actuator plate, a V-shaped connecting block and a positioning sleeve, said V-shaped connecting block is fixed on said unlocking actuator plate and has an opening facing away from said unlocking wheel, said positioning sleeve is fixed on said unlocking actuator plate and is sleeved on said driving positioning post.

3. The lock body of claim 2, wherein the unlocking wheel comprises a wheel sleeve, two clamping legs are arranged on the outer wall of the wheel sleeve, and the two clamping legs are oppositely arranged to form a V-shaped clamping groove for clamping the V-shaped connecting block.

4. A lock body according to any one of claims 1-3, wherein said anti-back mechanism comprises a driving plate and an anti-back torsion spring, said driving plate is mounted on the anti-back positioning post on said bottom plate and can rotate around said anti-back positioning post; the stopping torsional spring cover is put on the stopping reference column and with the driving plate is connected, works as prevent inserting the tongue indentation in the lock frame, the stopping torsional spring promotes the driving plate rotates and makes the stopping end of driving plate supports the oblique tongue makes the oblique tongue is in the stopping state.

5. A lock according to claim 4, wherein the strike plate is provided with a backstop block secured to the backstop end of the strike plate adjacent the latch bolt.

6. A lock according to claim 5, characterized in that the torsion end of the anti-backup torsion spring abuts against the anti-backup block.

7. A lock body according to claim 4, wherein the retaining end of the retaining torsion spring is provided with a retaining ring, and the retaining ring is sleeved on the torsion spring positioning post located on the bottom plate and close to the retaining positioning post.

8. The lock body according to any one of claims 1-3, wherein the oblique tongue comprises an oblique tongue, an oblique tongue guide rod and an oblique tongue spring, the oblique tongue is inserted into the oblique tongue hole, and the tail end of the oblique tongue is connected with the oblique tongue guide rod; the oblique tongue guide rod is erected on the oblique tongue limiting plate on the bottom plate, the free end of the oblique tongue guide rod penetrates through a guide limiting groove on the oblique tongue limiting plate, and a limiting clamping plate is arranged on the free end of the oblique tongue guide rod; the oblique tongue spring is sleeved on the oblique tongue guide rod and clamped between the oblique tongue and the oblique tongue limiting plate.

9. The lock body according to any one of claims 1 to 3, wherein a reset hole is formed at the tail end of the anti-insertion tongue facing the anti-insertion tongue limiting plate, a connection limiting column is arranged on the limiting surface of the anti-insertion tongue limiting plate facing the anti-insertion tongue, an anti-insertion tongue reset spring is sleeved on the connection limiting column, and the reset end of the anti-insertion tongue reset spring is inserted into the reset hole.

10. A lock according to claim 9, wherein the anti-insertion tongue is provided at the top and bottom of the tail end thereof with guide blocks which are inserted into guide slide grooves formed in the bottom and top plates of the lock frame.

Images