CN213477907U - Door lock - Google Patents

Abstract

The utility model discloses a door lock, including lock body, spring bolt, butt piece, transmission head, driven tooth, drive block, square pole head, initiative tooth, locking surface, back-locking push pedal, back-locking knob, lock core body, tapered end, locking lever, enclosing cover, the tapered end openly is provided with the mounting hole. When the door needs to be opened, the square rod head is driven to rotate through the handle, the driving teeth on the square rod head drive the driven teeth on the transmission head to move, and therefore the transmission head rotates to drive the abutting block to move backwards, and the lock tongue is received into the lock body. When the user needs the counter-lock, rotatory counter-lock knob, the counter-lock knob is an eccentric knob to promote the counter-lock push pedal and remove the locking surface butt that makes its front end face and transmission head, and then the rotation of restriction square pole head plays the counter-lock effect, for prior art, the lock simple structure of this scheme, control is convenient, the lock core atress is even, the bolt is unanimous to the force direction that applies of tapered end and locking lever direction, thereby can not lead to the locking lever because the atress is uneven to produce and buckle.

Description

Door lock

Technical Field

The utility model relates to a tool to lock field, especially a lock.

Background

The lock is one of the important parts of present door, and present lock structure is complicated, and the lock core is installed and is fixed the lock core through the inside bolt of beating of the side of door, leads to the unilateral atress of lock core, leads to the locking lever to deflect for a long time easily when on the door.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple structure, and the more even lock of lock core atress.

The utility model discloses a technical scheme that the solution problem adopted is: a door lock, comprising:

the lock body is internally provided with a mounting cavity;

the lock body is provided with a lock body, the lock body is provided with a lock hole, the lock hole is provided with a lock tongue, the lock tongue is arranged at the end part of the lock body in a telescopic manner, the tail end of the lock tongue extends into the installation cavity, and the tail end of the lock tongue is;

the transmission head is pivoted in the mounting cavity, driven teeth are arranged on the transmission head, and a driving block capable of being abutted against the abutting block is arranged on the transmission head;

the square rod head is pivoted in the mounting cavity, a first mounting hole used for being connected with a handle is formed in the square rod head, a driving tooth meshed with a driven tooth is arranged on the square rod head, a stop surface is arranged on the square rod head, and a first reset device is arranged on the square rod head;

the back locking push plate is arranged in the mounting cavity and can horizontally move along the mounting cavity, the front end face of the back locking push plate can be abutted against the stop face, and a second reset device is arranged on the back locking push plate;

the back locking knob is pivoted in the mounting cavity, the back locking knob is an eccentric knob, a second mounting hole is formed in the middle of the back locking knob, and the surface of the back locking knob is abutted against the surface of the back locking push plate and can drive the back locking push plate to move;

the lock core comprises a lock head and a lock rod arranged at the tail end of the lock head, the lock rod penetrates through the lock body and is inserted into the second mounting hole, a manual back locking handle is arranged at the other end of the lock rod, a lock core body is arranged in the middle of the front face of the lock head, the lock core body is connected with the lock rod, a plurality of first mounting holes used for being connected with a door are uniformly formed in the part, located on the periphery of the lock core body, of the surface of the lock head, and an outer cover used for covering the first mounting holes is arranged on the lock head;

the door cover is provided with a lock groove for clamping the lock tongue, the door cover is used for being installed on a door frame, and a driving device for driving the lock tongue to extend out of the lock body is arranged in the door cover or the lock body.

As a further improvement of the technical scheme, the driven teeth are arranged at the lower end of the transmission head, and the driving block is arranged at the upper end of the transmission head.

As a further improvement of the technical scheme, the middle part of the back locking push plate is provided with a through hole, the bottom end of the transmission head penetrates through the through hole and is pivoted in the mounting cavity, and the driven tooth is positioned above the back locking push plate.

As a further improvement of the above technical solution, a guide groove is provided on one side of the through hole, a reset plate located in the guide groove is provided in the installation cavity, and the second reset device is a reset spring provided between the reset plate and the tail end of the guide groove.

As a further improvement of the above technical solution, the guide groove is disposed at one side of the through hole close to the back locking knob, the top of the guide groove is provided with a cover plate, the rear end of the back locking push plate is provided with a vertical plate connected with the edge of the cover plate, the rear end face of the vertical plate is flush with the rear end face of the back locking push plate, and the vertical plate is abutted against the side wall of the back locking knob.

As a further improvement of the technical scheme, two extension rods are arranged on two sides of the tail end of the lock tongue, the abutting block is arranged at the tail end of each extension rod, and the counter lock push plate and the counter lock knob are arranged between the two extension rods.

As a further improvement of the above technical solution, the square bar head is disposed at the end of the installation cavity, and the first resetting device includes:

the fixed rod is arranged on the rear side of the square rod head;

the clamping plate is arranged on the side wall at the tail end of the mounting cavity;

the torsion spring is arranged on the fixed rod, and the support legs of the torsion spring are clamped on the clamping plate.

As a further improvement of the technical scheme, the driving teeth are arranged on the front side of the square rod head, and the driven teeth are arranged on the rear side of the transmission head.

As a further improvement of the above technical solution, the second mounting hole is a cross hole.

As a further improvement of the above technical solution, the driving device is a magnet which is disposed in the lock groove and can adsorb the lock tongue.

The utility model has the advantages that: during the installation, install the lock body inside the door, the tapered end passes through in the outside inserted lock body of door, then carry out the bolt installation through setting up in the positive a plurality of mounting holes of tapered end, the door closure is installed on the door frame, under the normal condition, the spring bolt is for stretching out the state of lock body, when needs open the door, it is rotatory to drive the square bar head through the handle, the overhead initiative tooth of square bar drives the overhead driven tooth motion of transmission, thereby make the transmission head rotatory, and then make overhead drive block of transmission and butt piece butt and drive butt piece and remove backward, thereby overcome drive arrangement's power, make in the spring bolt income lock body and then reach the purpose of opening the door. When the user released the handle, first resetting means drove the square pole head and resets to drive the transmission head and reset, make the butt piece not receiving the restriction of drive block, and then make the spring bolt reeve the lock body under drive arrangement's effect. When the user needs the back lock, rotatory back lock knob, the back lock knob is an eccentric knob, thereby make the back lock knob promote the back lock push pedal and remove at rotatory in-process, and then make the preceding terminal surface of back lock push pedal and the overhead locking surface butt of transmission, thereby the rotation of restriction side pole head, make the handle can't drive the side pole head and rotate therefore play the back lock effect, when relieving the back lock, rotatory back lock knob makes the back lock knob reset, thereby the back lock push pedal resets under second resetting means's effect no longer restricts the rotation of side pole head. Compared with the prior art, the door lock of this scheme simple structure, control is convenient, and the lock core atress is even, thereby the bolt is from the positive fixed lock core of going into on the door of revolving of tapered end, and the bolt is for the power behind the orientation door to the power of applying force of tapered end, and the direction of force is unanimous with the locking lever direction to can not lead to the locking lever because the atress is uneven to produce and buckle.

Drawings

The invention will be further explained with reference to the drawings and the detailed description.

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

fig. 2 is a schematic view of the internal structure of the lock body according to the preferred embodiment of the present invention;

FIG. 3 is a schematic structural view of a square head according to a preferred embodiment of the present invention;

FIG. 4 is a schematic structural view of a back locking push plate according to a preferred embodiment of the present invention;

fig. 5 is a schematic structural diagram of a lock cylinder in a preferred embodiment of the present invention;

fig. 6 is an exploded schematic view of the lock cylinder according to the preferred embodiment of the present invention.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 6, a door lock includes:

the lock body 10 is provided with a mounting cavity 11;

the lock bolt 20 is telescopically arranged at the end part of the lock body 10, the tail end of the lock bolt 20 extends into the installation cavity 11, and the tail end of the lock bolt 20 is provided with a butting block 22;

the transmission head 40 is pivoted in the installation cavity 11, driven teeth 41 are arranged on the transmission head 40, and a driving block 42 capable of being abutted against the abutting block 22 is arranged on the transmission head 40;

the square rod head 30 is pivoted in the mounting cavity 11, a first mounting hole 34 used for being connected with a handle is formed in the square rod head 30, a driving tooth 31 meshed with a driven tooth 41 is formed in the square rod head 30, a stop surface 33 is formed in the square rod head 30, and a first resetting device is arranged on the square rod head 30;

the back locking push plate 50 is arranged in the installation cavity 11 and can horizontally move along the installation cavity 11, the front end surface of the back locking push plate 50 can be abutted against the stop surface 33, and a second reset device is arranged on the back locking push plate 50;

the counter locking knob 60 is pivoted in the installation cavity 11, the counter locking knob 60 is an eccentric knob, a second installation hole 61 is formed in the middle of the counter locking knob 60, and the surface of the counter locking knob 60 is abutted against the surface of the counter locking push plate 50 and can drive the counter locking push plate 50 to move;

the lock core 80 comprises a lock head 81 and a lock rod 83 arranged at the tail end of the lock head 81, the lock rod 83 penetrates through the lock body 10 and is inserted into the second mounting hole 61, the other end of the lock rod 83 is provided with a manual reverse locking handle 90, the middle of the front surface of the lock head 81 is provided with a lock core body 82, the lock core body 82 is connected with the lock rod 83, a plurality of first mounting holes 34 used for being connected with a door are uniformly formed in the part, located on the periphery of the lock core body 82, of the surface of the lock head 81, and an outer cover 84 used for covering the first mounting holes 34 is arranged on the lock head 81;

the door cover 70 is provided with a locking groove 71 for the locking bolt 20 to be clamped, the door cover 70 is used for being installed on a door frame, and a driving device for driving the locking bolt 20 to extend out of the lock body 10 is arranged in the door cover 70 or the lock body 10.

During the installation, install lock body 10 inside the door, tapered end 81 inserts in the lock body 10 through the door outside, then carry out the bolt installation through setting up in the positive a plurality of mounting holes 34 of tapered end 81, door closure 70 installs on the door frame, under the normal condition, spring bolt 20 is for stretching out the state of lock body 10, when needing to open the door, it is rotatory to drive square pole head 30 through the handle, drive tooth 31 drives the driven tooth 41 motion on the transmission head 40 on the square pole head 30, thereby make transmission head 40 rotatory, and then make the drive block 42 on the transmission head 40 and butt piece 22 butt and drive butt piece 22 rearward movement, thereby overcome drive arrangement's power, make spring bolt 20 income lock body 10 in and then reach the mesh of opening the door. When the user releases the handle, the first resetting device drives the square rod head 30 to reset, so as to drive the transmission head 40 to reset, so that the abutting block 22 is not limited by the driving block 42, and the lock bolt 20 is enabled to extend out of the lock body 10 again under the action of the driving device. When the user needs the back locking, rotatory back locking knob 60, back locking knob 60 is an eccentric knob, thereby make back locking knob 60 promote the removal of back locking push pedal 50 at rotatory in-process, and then make the preceding terminal surface of back locking push pedal 50 and the locking face 33 butt on the drive head 40, thereby limit the rotation of square pole head 30, make the handle can't drive square pole head 30 and rotate and consequently play the back locking effect, when relieving the back locking, rotatory back locking knob 60 makes back locking knob 60 reset, thereby the back locking push pedal 50 resets under the effect of second resetting means no longer limits the rotation of square pole head 30. Compared with the prior art, the door lock of this scheme simple structure, control is convenient, and lock core 80 atress is even, thereby the bolt openly revolves into fixed lock core 80 on the door from tapered end 81, the bolt is for the power towards the door back to the force of tapered end 81 application of force, and the direction of force is unanimous with locking lever 83 direction, thereby can not lead to locking lever 83 because the atress is uneven to produce and buckle, can close first mounting hole 34 through enclosing cover 84 lid, thereby make the outward appearance of lock core 80 neatly simple more.

Further improved and optimized structure, the driven teeth 41 are preferably arranged at the lower end of the transmission head 40, and the driving block 42 is arranged at the upper end of the transmission head 40.

Considering that the smaller the size of the lock body 10 is, the better, the middle of the counter lock push plate 50 is preferably provided with a through hole 51, the bottom end of the driving head 40 is pivoted in the installation cavity 11 through the through hole 51, and the driven tooth 41 is located above the counter lock push plate 50, so that the counter lock push plate 50 and the partial structure of the driving head 40 are overlapped in the plane direction, and the size of the lock body 10 is reduced.

Further, in consideration of limiting the moving direction of the back lock push plate 50, it is preferable that a guide groove 52 is formed at one side of the through hole 51, a return plate 13 is disposed in the guide groove 52 in the mounting chamber 11, and the second return means is a return spring disposed between the return plate 13 and the end of the guide groove 52. Through the cooperation relation that resets board 13 and be located guide way 52 to effectual removal direction and the distance to the back lock push pedal 50 have played the restriction effect, and set up reset spring in resetting board 13 and guide way 52, thereby also make the structure in the lock body 10 obtain the reduction, and then can produce with littleer size, second resetting means also can be for other embodiments such as elastic rubber post.

Further improvement is carried out, in view of preventing the reset spring from jumping out to cause reset failure, and enabling the counter lock knob 60 to better push the counter lock push plate 50, preferably, the guide groove 52 is arranged on one side of the through hole 51 close to the counter lock knob 60, the top of the guide groove 52 is provided with a cover plate 53, the rear end of the counter lock push plate 50 is provided with a vertical plate connected with the edge of the cover plate 53, the rear end face of the vertical plate is flush with the rear end face of the counter lock push plate 50, and the vertical plate is abutted against the side wall of the counter lock knob 60. Through the cover plate 53, the spring can be prevented from jumping out, and through the vertical plate, the contact area and the height of the back lock push plate 50 and the back lock knob 60 are increased, so that the back lock knob 60 pushes the back lock push plate 50 to move more stably.

The structure is further optimized, preferably, two extension rods 21 are arranged on two sides of the tail end of the locking bolt 20, the abutting block 22 is arranged at the tail end of the extension rod 21, and the counter lock push plate 50 and the counter lock knob 60 are arranged between the two extension rods 21.

Further, it is improved to optimize a first resetting device, preferably, the square rod head 30 is disposed at the end of the installation cavity 11, and the first resetting device includes:

a fixing lever 32, the fixing lever 32 being provided at a rear side of the square head 30;

the clamping plate 12 is arranged on the side wall at the tail end of the mounting cavity 11;

the torsion spring is arranged on the fixing rod 32, and the support legs of the torsion spring are clamped on the clamping plate 12.

First resetting means also can be for being provided with an annular in square pole head 30 middle part, the annular endotheca is equipped with a torsional spring, and the torsional spring has two stabilizer blades, and a stabilizer blade is fixed with square pole head 30, and another stabilizer blade is fixed in on the installation cavity 11 inner wall. The first resetting device may be any one of the existing resetting methods, which is not described herein.

Further, since the rotation angles of the transmission head 40 and the square pole head 30 do not exceed 180 degrees in the present embodiment, it is preferable that the driving tooth 31 is disposed at the front side of the square pole head 30 and the driven tooth 41 is disposed at the rear side of the transmission head 40 in order to save cost and production time. The driving teeth 31 and the driven teeth 41 are not provided with a complete ring body, but are provided with half, so that the processing time can be shortened, and the time cost and the labor cost can be reduced.

Further, according to the improvement, different people have different requirements on the installation direction of the lock cylinder 80, and some people prefer that the lock holes on the lock cylinder body 82 are vertical, and some people prefer that the lock holes on the lock cylinder body 82 are horizontally arranged, so that the second installation hole 61 is preferably a cross-shaped hole.

Further improve, drive arrangement can be the driving spring who sets up in spring bolt 20 rear to drive spring bolt 20 pops out, but can increase the structure of lock body 10 like this, and can increase the length of lock body 10, so it is preferred drive arrangement is for setting up in locked groove 71 and adsorbable spring bolt 20's magnet, under normal condition, when the door is not closed and not back-locking, spring bolt 20 has great degree of freedom, can withdraw lock body 10 or stretch out the optional position between the lock body 10 completely, when the door is closed the back, magnet adsorbs spring bolt 20, thereby drive spring bolt 20 and stretch out and get into locked groove 71 in, thereby play the effect of locking the door.

The above is only the preferred embodiment of the present invention, not limiting the patent scope of the present invention, all of which are under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct or indirect application is included in other related technical fields in the patent protection scope of the present invention.

Claims (10)

1. A door lock, comprising:

the lock comprises a lock body (10), wherein a mounting cavity (11) is arranged in the lock body (10);

the lock bolt (20) is arranged at the end part of the lock body (10) in a telescopic mode, the tail end of the lock bolt (20) extends into the installation cavity (11), and the tail end of the lock bolt (20) is provided with a butting block (22);

the transmission head (40) is pivoted in the installation cavity (11), a driven tooth (41) is arranged on the transmission head (40), and a driving block (42) capable of being abutted against the abutting block (22) is arranged on the transmission head (40);

the square rod head (30) is pivoted in the mounting cavity (11), a first mounting hole (34) used for being connected with a handle is formed in the square rod head (30), a driving tooth (31) meshed with a driven tooth (41) is formed in the square rod head (30), a stop surface (33) is formed in the square rod head (30), and a first reset device is arranged on the square rod head (30);

the locking device comprises a back locking push plate (50), wherein the back locking push plate (50) is arranged in the installation cavity (11) and can horizontally move along the installation cavity (11), the front end surface of the back locking push plate (50) can be abutted against a stop surface (33), and a second reset device is arranged on the back locking push plate (50);

the anti-locking knob (60) is pivoted in the mounting cavity (11), the anti-locking knob (60) is an eccentric knob, a second mounting hole (61) is formed in the middle of the anti-locking knob (60), and the surface of the anti-locking knob (60) is abutted to the surface of the anti-locking push plate (50) and can drive the anti-locking push plate (50) to move;

the lock core (80) comprises a lock head (81) and a lock rod (83) arranged at the tail end of the lock head (81), the lock rod (83) penetrates through the lock body (10) and is inserted into the second mounting hole (61), a manual reverse locking handle (90) is arranged at the other end of the lock rod (83), a lock core body (82) is arranged in the middle of the front face of the lock head (81), the lock core body (82) is connected with the lock rod (83), a plurality of first mounting holes (34) used for being connected with a door are uniformly formed in the part, located on the periphery of the lock core body (82), of the surface of the lock head (81), and an outer cover (84) covering the first mounting holes (34) is arranged on the lock head (81);

the door comprises a door cover (70), wherein a lock groove (71) for clamping the lock bolt (20) is formed in the door cover (70), the door cover (70) is used for being installed on a door frame, and a driving device for driving the lock bolt (20) to extend out of the lock body (10) is arranged in the door cover (70) or the lock body (10).

2. A door lock according to claim 1, wherein:

the driven teeth (41) are arranged at the lower end of the transmission head (40), and the driving block (42) is arranged at the upper end of the transmission head (40).

3. A door lock according to claim 2, wherein:

the middle part of the back locking push plate (50) is provided with a through hole (51), the bottom end of the transmission head (40) penetrates through the through hole (51) and is pivoted in the mounting cavity (11), and the driven tooth (41) is positioned above the back locking push plate (50).

4. A door lock according to claim 3, wherein:

one side of the through hole (51) is provided with a guide groove (52), a reset plate (13) positioned in the guide groove (52) is arranged in the installation cavity (11), and the second reset device is a reset spring arranged between the reset plate (13) and the tail end of the guide groove (52).

5. A door lock according to claim 4, wherein:

the guide groove (52) is arranged on one side, close to the back locking knob (60), of the through hole (51), a cover plate (53) is arranged at the top of the guide groove (52), a vertical plate connected with the edge of the cover plate (53) is arranged at the rear end of the back locking push plate (50), the rear end face of the vertical plate is flush with the rear end face of the back locking push plate (50), and the vertical plate is abutted to the side wall of the back locking knob (60).

6. A door lock according to claim 1 or 2 or 3 or 4 or 5, wherein:

two extension rods (21) are arranged on two sides of the tail end of the lock tongue (20), the abutting block (22) is arranged at the tail end of each extension rod (21), and the counter lock push plate (50) and the counter lock knob (60) are arranged between the two extension rods (21).

7. A door lock according to claim 1 or 2 or 3 or 4 or 5, wherein:

square pole head (30) set up in the end of installation cavity (11), first resetting means includes:

a fixing rod (32), the fixing rod (32) being provided on the rear side of the square head (30);

the clamping plate (12), the clamping plate (12) is arranged on the side wall of the tail end of the mounting cavity (11);

the torsion spring is arranged on the fixing rod (32), and the support legs of the torsion spring are clamped on the clamping plate (12).

8. A door lock according to claim 1 or 2 or 3 or 4 or 5, wherein:

the driving tooth (31) is arranged on the front side of the square rod head (30), and the driven tooth (41) is arranged on the rear side of the transmission head (40).

9. A door lock according to claim 1 or 2 or 3 or 4 or 5, wherein:

the second mounting hole (61) is a cross hole.

10. A door lock according to claim 1 or 2 or 3 or 4 or 5, wherein:

the driving device is a magnet which is arranged in the lock groove (71) and can adsorb the lock tongue (20).

Images