CN210598442U - Door lock - Google Patents

Abstract

The utility model discloses a door lock, including panel, handle, the panel is equipped with the mounting hole, the mounting hole is used for installing the handle adapter sleeve, the front end of handle adapter sleeve is equipped with drive disc, the rear end of handle adapter sleeve with the handle rigid coupling, the pore wall middle part of mounting hole is equipped with a antifriction bearing, antifriction bearing's both sides are equipped with a preceding axial support packing ring and a back axial support packing ring respectively, preceding axial support packing ring with it supports to lean on the packing ring to be equipped with the axial between the antifriction bearing, the handle adapter sleeve install in antifriction bearing's inner circle, preceding axial support packing ring's front side support in drive disc's back wall, the axial supports respectively to lean on the both sides of packing ring preceding axial support packing ring with antifriction bearing's outer lane. The rolling bearing replaces a supporting rubber ring, plays a role of radial supporting and is used for supporting the handle connecting sleeve, and the condition that the handle connecting sleeve is loosened or clamped in the rotating process is avoided.

Description

Door lock

Technical Field

The utility model relates to a door lock.

Background

The door lock in the prior art comprises a panel and a handle, wherein the panel is provided with a mounting hole, a supporting rubber ring is fixedly mounted in the mounting hole, the handle is fixedly connected with a handle connecting sleeve, and the handle connecting sleeve is rotatably arranged in the supporting rubber ring in a penetrating manner, so that a friction pair is formed between the inner annular wall of the supporting rubber ring and the outer peripheral surface of the handle connecting sleeve. However, the size of the supporting rubber ring inevitably has errors, and if the inner diameter of the supporting rubber ring is too large, the gap between the inner ring wall of the supporting rubber ring and the outer peripheral surface of the handle connecting sleeve is too large, so that the handle connecting sleeve is easy to loosen. If the inner diameter of the supporting rubber ring is too small, the gap between the inner ring wall of the supporting rubber ring and the outer peripheral surface of the handle connecting sleeve is too small, so that the handle connecting sleeve is easily clamped by the supporting rubber ring, and the swinging of a handle is influenced.

In order to solve the above problems, other door locks in the prior art use two rolling bearings instead of the above supporting rubber ring, that is, two rolling bearings are installed in the installation hole, so that the handle connecting sleeve sequentially passes through the two rolling bearings to rotatably install the handle connecting sleeve in the installation hole, however, the use of two rolling bearings increases the overall cost of the door lock and increases the thickness of the panel of the door lock.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model aims to provide a door lock, which enables a hand connecting sleeve and a mounting hole to realize effective rotatable connection, and has lower cost and smaller thickness of a door lock panel.

The purpose of the utility model is realized by adopting the following technical scheme:

the door lock comprises a panel and a handle, wherein the panel is provided with a mounting hole for mounting a handle connecting sleeve, the front end of the handle connecting sleeve is provided with a driving disc, the rear end of the handle connecting sleeve is fixedly connected with the handle, the middle part of the hole wall of the mounting hole is provided with a rolling bearing, two sides of the rolling bearing are respectively provided with a front axial supporting gasket and a rear axial supporting gasket, an axial abutting gasket is arranged between the front axial supporting gasket and the rolling bearing, the handle connecting sleeve is arranged on an inner ring of the rolling bearing, the front side of the front axial supporting washer is abutted against the rear wall of the driving disc, two sides of the axial abutting washer are respectively abutted against the front axial supporting washer and the outer ring of the rolling bearing, the edge of the opening at the rear end of the mounting hole is provided with an inner flange, and two sides of the rear axial supporting gasket respectively abut against the inner flange of the mounting hole and the handle connecting sleeve.

Specifically, the cross section of the front axial supporting gasket is in an L shape, the front axial supporting gasket comprises a front axial ring and a front radial ring, two sides of the front radial ring are respectively abutted against the rear wall of the driving disc and the axial abutting gasket, and a gap is reserved between the inner wall of the front axial ring and the outer wall of the handle connecting sleeve.

Specifically, the cross section of the rear axial support gasket is in an L shape, the rear axial support gasket comprises a rear axial ring and a rear radial ring, two sides of the rear radial ring are respectively abutted against the inner flange of the mounting hole and the handle connecting sleeve, and a gap is reserved between the inner wall of the rear axial ring and the outer wall of the handle connecting sleeve.

Specifically, the axial supports and leans on the cross-section of packing ring to be right trapezoid, the axial supports and leans on the packing ring to be equipped with and dodges cyclic annular inclined plane, dodge cyclic annular inclined plane with leave the clearance between the inner circle of antifriction bearing, the axial supports and leans on the preceding terminal surface of packing ring to support the back wall of preceding radial ring, the axial supports and leans on the back terminal surface of packing ring to support the outer lane of antifriction bearing.

Specifically, the rolling bearing is a deep groove ball bearing.

Specifically, the front axial support washer and the rear axial support washer are both made of nylon.

Specifically, the front axial support washer and the rear axial support washer are both made of polyoxymethylene.

Specifically, the rear end of the handle connecting sleeve is fixedly connected with the handle through a screw.

Specifically, the cross section profile of the back end of the handle connecting sleeve is square, a square cavity is formed in the handle, the back end of the handle connecting sleeve is matched with the square cavity, and the square cavity is fixedly connected with the back end of the handle connecting sleeve through screws.

Specifically, the outer ring of the rolling bearing abuts against the inner wall of the inner flange, the inner flange is provided with a clearance gap, and the clearance gap is used for avoiding the inner ring of the rolling bearing.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the middle of the hole wall of the mounting hole is provided with a rolling bearing, two sides of the rolling bearing are respectively provided with a front axial supporting gasket and a rear axial supporting gasket, an axial abutting gasket is arranged between the front axial supporting gasket and the rolling bearing, the handle connecting sleeve is mounted on an inner ring of the rolling bearing, the front side of the front axial supporting gasket abuts against the rear wall of the driving disc, two sides of the axial abutting gasket respectively abut against an outer ring of the front axial supporting gasket and an outer ring of the rolling bearing, an inner flange is arranged at the opening edge of the rear end of the mounting hole, and two sides of the rear axial supporting gasket respectively abut against the inner flange of the mounting hole and the handle.

The rolling bearing replaces a supporting rubber ring, plays a role of radial supporting and is used for supporting the handle connecting sleeve, and the condition that the handle connecting sleeve is loosened or clamped in the rotating process is avoided. Preceding axial support packing ring, axial lean on the effect that the packing ring and back axial support packing ring played axial positioning antifriction bearing jointly, make antifriction bearing remain stable in the axial for need not to install two antifriction bearings in the mounting hole, thereby reduce the overall cost of lock, avoid the lock panel thickness too big simultaneously.

Drawings

FIG. 1 is an exploded view of the door lock of the present invention, wherein the door lock is configured to accommodate a "right-opening" style door;

FIG. 2 is another exploded view of the door lock of the present invention, wherein the door lock is configured to accommodate a "right-opening" style door;

FIG. 3 is a vertical sectional view of the door lock of the present invention;

FIG. 4 is a cross sectional view of the door lock of the present invention wherein the locking bar has partially entered the drive notch;

FIG. 5 is another cross sectional view of the door lock of the present invention wherein the locking bar has not entered the drive notch;

FIG. 6 is a perspective view of the handle adapter sleeve;

FIG. 7 is a perspective view of the drive sleeve;

FIG. 8 is a partial view of an interior view of the door lock of the present invention, wherein the door lock is configured to accommodate a "right-opening" style door;

FIG. 9 is a partial view of an interior view of the door lock of the present invention configured to accommodate a "left-hand" style door;

FIG. 10 is a view of the inside of the door in the installed state of the door lock of the present invention, wherein the door is in a "right open" configuration;

FIG. 11 is an inside view of the door with the door lock installed according to the present invention, wherein the door is in a "left open" configuration;

FIG. 12 is an enlarged view of a portion of FIG. 1 at C;

fig. 13 is a partial enlarged view at D in fig. 4.

In the figure: 1. a panel; 11. mounting holes; 111. an inner flange; 112. avoiding a gap; 12. a limiting block; 13. a cover plate; 2. a handle connecting sleeve; 21. fitting the circular hole; 22. a drive disk; 221. a drive lug; 23. a return torsion spring; 231. the end of the torsion spring; 24. a torsional spring shifting block; 25. through the long hole; 3. a handle; 31. a button; 32. a lock lever; 321. a return spring; 322. an abutting portion; 33. mounting a sheet; 34. a screw; 4. a transmission sleeve; 41. a transmission disc; 411. avoiding the long hole; 412. an outer limit flange; 413. an inner limiting flange; 42. a first transmission contour hole; 43. a transmission notch; 44. resetting the bump; 5. a driving strap; 51. a main body portion; 511. a second transmission profile hole; 52. a projection; 6. a transmission rod; 71. a rolling bearing; 72. a front axial support washer; 721. a forward axial ring; 722. a forward radial ring; 73. a rear axial support washer; 731. a rear axial ring; 732. a rear radial ring; 74. axially against the washer; 741. avoiding the annular inclined plane.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

See fig. 1 to 4, the utility model discloses a door lock includes panel 1, handle 3, and panel 1 is equipped with mounting hole 11, and handle adapter sleeve 2 is rotationally installed to mounting hole 11. The rear end of the handle connecting sleeve 2 is fixedly connected with a handle 3 (the direction A in figure 1 is the front). Referring to fig. 6, the front end of the handle connecting sleeve 2 is provided with a matching circular hole 21, the front end of the handle connecting sleeve 2 is provided with a driving disc 22, and the front side wall of the driving disc 22 is provided with two driving protrusions 221.

Referring to fig. 7, the door lock of the present invention includes a transmission sleeve 4, the transmission sleeve 4 rotatably penetrates through the matching circular hole 21, the front end of the transmission sleeve 4 is exposed out of the matching circular hole 21, and the front end of the transmission sleeve 4 is provided with a transmission disc 41. The transmission disc 41 is provided with two avoidance long holes 411, and the avoidance long holes 411 are arc-shaped. Referring to fig. 8, the avoidance long holes 411 are located at the rotation locus of the driving protrusions 221, and each driving protrusion 221 passes through one avoidance long hole 411. The avoidance long hole 411 is used for avoiding the driving protrusion 221 during the reverse rotation of the driving disk 22 (the present embodiment defines the upward swinging direction of the handle 3 as the forward direction, and the reverse direction is the reverse direction of the direction B1 in fig. 1 and 8). Specifically, referring to fig. 6, two driving protrusions 221 are uniformly distributed along the circumferential direction of the driving disk 22, and correspondingly, referring to fig. 7, two avoidance long holes 411 are uniformly distributed along the circumferential direction of the transmission disk 41, the central angle corresponding to the avoidance long holes 411 is 100 ° to 130 °, and in a normal state, the driving protrusions 221 are located in the middle of the avoidance long holes 411 (as shown in fig. 8).

Specifically, see fig. 8, panel 1 is equipped with the inner chamber, and two vertical relative inner walls of inner chamber all are equipped with stopper 12. Handle adapter sleeve 2 cover is equipped with reset torsion spring 23, and two torsional spring end 231 of reset torsion spring 23 all stretch out outwards. With reference to fig. 6, the rear side wall of the handle connecting sleeve 2 is provided with two torsion spring shifting blocks 24, and the two torsion spring shifting blocks 24 are uniformly distributed along the circumferential direction of the handle connecting sleeve 2.

In a normal state (in combination with fig. 1, 8 and 9): the handle 3 is in a horizontal state, and the two torsion spring ends 231 of the restoring torsion spring 23 respectively abut against the respective lower sides of the two limit blocks 12, and correspondingly, the two torsion spring ends 231 of the restoring torsion spring 23 respectively abut against the respective lower sides of the two torsion spring shifting blocks 24. The transmission disc 41 is provided with two reset lugs 44, the two reset lugs 44 are uniformly distributed along the circumferential direction of the transmission disc 41, and the two reset lugs 44 extend backwards. In a normal state, both reset tabs 44 abut against the respective undersides of the two torsion spring ends 231.

Taking fig. 8 as an example, in the process of swinging the handle 3 from the lateral state in the forward direction (direction B1 in fig. 1 and 8) to the obliquely upward direction, the two torsion spring knobs 24 rotate along with it. Since the two torsion spring ends 231 of the reset torsion spring 23 respectively abut against the respective lower sides of the two limit blocks 12, the left torsion spring shifting block 24 in fig. 8 drives the left torsion spring end 231 in fig. 8 to swing toward the direction B1, and the right torsion spring end 231 in fig. 8 is still abutted by the right limit block 12 in fig. 8, so that the reset torsion spring 23 is further elastically deformed. After the handle 3 is loosened, the restoring torsion spring 23 restores under the action of the self elastic restoring force, the tail end 231 of the torsion spring on the left side in fig. 8 restores to abut against the limiting block 12 on the left side in fig. 8, and pushes the torsion spring shifting block 24 on the left side in fig. 8 to drive the handle connecting sleeve 2 and the handle 3 to swing together to the state shown in fig. 8, namely, the state that the handle 3 is transversely arranged. In the process, the end 231 of the torsion spring on the left side in fig. 8 abuts against the reset bump 44 on the left side in fig. 8 to drive the transmission sleeve 4 to reset to the state shown in fig. 8, and thus drive the transmission rod 6 to reset to the state shown in fig. 8.

Because the two torsion spring shifting blocks 24 are uniformly distributed along the circumferential direction of the handle connecting sleeve 2, in the process of swinging the handle 3 from a transverse state to an inclined downward direction (in the opposite direction of the direction B1 in fig. 1 and 8), contrary to the above-mentioned forward swinging situation, the torsion spring shifting block 24 on the right side in fig. 8 drives the torsion spring tail end 231 on the right side in fig. 8 to swing in the opposite direction of the direction B1, and similarly, after the handle 3 is loosened, the restoring torsion spring 23 is restored under the action of the self elastic restoring force to drive the handle 3 to be restored to the transverse state (as shown in fig. 8). That is, the return torsion spring 23 enables the handle 3 to be automatically returned to the lateral state after swinging upward or downward.

As an alternative embodiment (this alternative embodiment is not shown, and fig. 1 and 8 can be referred to), in a normal state: when the handle 3 is in the horizontal state, the two torsion spring ends 231 of the return torsion spring 23 respectively abut against the respective upper sides of the two stoppers 12, and accordingly: the two torsion spring ends 231 of the restoring torsion spring 23 respectively abut against the respective upper sides of the two torsion spring dials 24, and the two torsion spring ends 231 of the restoring torsion spring 23 respectively abut against the respective upper sides of the two restoring protrusions 44. With this arrangement, the handle 3 can be returned to the horizontal position after being tilted.

With reference to fig. 1 to 5 and 8, the door lock of the present invention includes a driving plate 5 and a driving rod 6. The front end of the transmission sleeve 4 is provided with a first transmission contour hole 42 (combined with fig. 7). Referring to fig. 3 and 8, the driving strap 5 includes a main body 51 and a protrusion 52, and the main body 51 is provided with a second driving contour hole 511. The cross-sectional profile of the drive rod 6 is non-circular, in this embodiment the drive rod 6 is square in cross-section. The first drive contour hole 42 and the second drive contour hole 511 each have a contour corresponding to the cross-sectional contour of the drive rod 6. The driving plate 5 is superposed on the front side wall of the driving disc 41, and specifically, referring to fig. 12, the panel 1 is screwed with a cover plate 13, and after the cover plate 13 is installed, the cover plate 13 is abutted against the front side wall of the driving plate 5, so that the driving plate 5 is kept superposed on the front side wall of the driving disc 41. The drive rod 6 passes through the second drive contour 511 and is partially located in the first drive contour 42. The protrusion 52 is located at the rotation track of the driving protrusions 221 and abuts against one of the driving protrusions 221 (refer to fig. 7 and 8).

The exposed end of the drive rod 6 is connected to a lock cylinder (not shown) and rotation of the drive rod 6 locks or unlocks the lock cylinder.

Specifically, referring to fig. 8 and 9, the main body portion 51 of the drive strap 5 has a partial circular shape, the protruding portion 52 of the drive strap 5 has a partial fan shape, and the circular arc of the protruding portion 52 and the circular arc of the main body portion 51 are concentric with each other. The front side wall of the drive disk 41 is provided with an outer limit flange 412 and an inner limit flange 413. The inner stopper flange 413 has an arc shape, and the inner wall contour of the inner stopper flange 413 is fitted to the partial circle of the main body 51. The outer retention flange 412 is annular in shape and the inner wall profile of the outer retention flange 412 conforms to the arc of the projection 52. The inner position-defining flange 413 and the outer position-defining flange 412 together guide the driver blade 5 such that the driver blade 5 can rotate relative to the driver disk 41, and the cover plate 13 abuts against the driver blade 5 (see fig. 12) such that the driver blade 5 is held between the inner position-defining flange 413 and the outer position-defining flange 412.

Specifically, referring to fig. 8 and 9, the central angle of the protrusion 52 is 85 ° to 95 °, and when the protrusion 52 abuts against one of the driving protrusions 221, the second transmission contour hole 511 formed in the main body 51 and the first transmission contour hole 42 formed in the transmission sleeve 4 are aligned with each other.

In this way, also taking fig. 8 as an example, in the process that the handle 3 swings forward (in the direction B1 in fig. 1 and 8) to tilt upward, the driving protrusion 221 located at the lower side in fig. 8 drives the transmission rod 6 and the transmission sleeve 4 to rotate forward together through the transmission piece 5 (the protrusion 52), so as to lock the key cylinder. During the process of swinging the handle 3 in the reverse direction (the direction opposite to the direction B1 in fig. 8), the escape long hole 411 escapes from the driving protrusion 221 during the process of rotating the handle connecting sleeve 2, and the driving protrusion 221 does not contact with the protruding part 52 (the driving protrusion 221 idles), so that the handle 3 cannot drive the driving sleeve 4 and the driving rod 6 to rotate through the driving sheet 5, and therefore, the handle 3 swings in the reverse direction (swings downward) and cannot realize unlocking. To the door of installing the cat eye, lawless persons may break the cat eye earlier, then go deep into the instrument of doing a case toward the room through the cat eye mounting hole to open the lock. To the utility model discloses a lock, the householder is closing the door when locking indoor, only needs to swing horizontal handle 3 to the slope up (follow direction B1 in fig. 8 promptly), can realize locking. After locking, if a lawbreaker breaks open the cat eye, then the lawbreaker enters the case making tool through the cat eye hole, and pulls the handle 3 to swing downward (i.e. in the direction opposite to the direction B1 in fig. 8), as mentioned above, the avoiding long hole 411 avoids the driving protrusion 221 in the process of the handle connecting sleeve 2 rotating in the opposite direction, so that the driving protrusion 221 idles, the handle 3 cannot drive the transmission sleeve 4 and the transmission rod 6 to rotate through the transmission piece 5, and therefore the lawbreaker cannot simply pull the handle 3 through the cat eye hole in the opposite direction (downward) to unlock the lock.

Specifically, the cross section profile of the rear section of the handle connecting sleeve 2 is square, a square cavity is arranged inside the handle 3, the rear section of the handle connecting sleeve 2 is matched with the square cavity, and the square cavity is fixedly connected with the rear end of the handle connecting sleeve 2 through a screw 34.

Referring to fig. 12, the cover plate 13 is provided with a left-open flag and a right-open flag, the front side wall of the driver blade 5 is provided with an indication arrow, and when the driver blade 5 is adjusted to the state that the indication arrow points to the left-open flag (corresponding to the state shown in fig. 9), the protrusion 52 abuts against one of the driving protrusions 221 (the driving protrusion 221 on the upper side in fig. 9), and at this time, the door lock is adapted to the door-loading form of the left-open (as shown in fig. 11). When the driving strap 5 is adjusted to the state that the indication arrow points to the "right-opening" sign (corresponding to the state shown in fig. 8 and 12), the projection 52 abuts against the other driving lug 221 (the driving lug 221 on the lower side in fig. 8), and at this time, the door lock is adapted to the "right-opening" door loading form (shown in fig. 10).

For the lock setting position difference of the different doors of adaptation, can with the utility model discloses a corresponding deformation is made to the lock, specifically is, if need with like the installation lock of the "right side form of opening" that fig. 10 is shown (the left side edge of door plant is the articulated shaft, and the right side at the door plant inner wall is installed to the lock), then handle 3 and driving plate 5 are installed with the form that fig. 1 to 5 and fig. 8 are shown, wherein the "right side of opening" sign of apron 13 is aimed at to the instruction arrow point of driving plate 5. If it is desired to install the door lock in a "left open" type as shown in fig. 11 (the right side edge of the door panel is a hinge shaft, and the door lock is installed on the left side of the inner wall of the door panel), the handle 3 and the driving plate 5 are installed in a type as shown in fig. 9.

The right-opening form is adjusted to the left-opening form, the cover plate 13, the transmission rod 6, the transmission piece 5 and the transmission sleeve 4 are detached in sequence, then the screw 34 is detached, the handle 3 can be detached from the rear end of the handle connecting sleeve 2, then the handle 3 is rotated 180 degrees (from the angle shown in fig. 8 to the angle shown in fig. 9), and is re-installed on the handle connecting sleeve 2, and then the screw 34 is screwed up again, so that the handle connecting sleeve 2 and the handle 3 are fixedly connected again. Further, the driving sleeve 4 is remounted (as shown in fig. 9), the driving plate 5 is placed on the front side surface of the driving disc 41 again, and the indication arrow of the driving plate 5 is aligned with the left-open mark of the cover plate 13, at this time, the driving plate 5 is adjusted until the protruding part 52 abuts against the driving lug 221 (as shown in fig. 9) on the upper side in fig. 9, and the second driving contour hole 511 formed in the main body part 51 and the first driving contour hole 42 formed in the driving sleeve 4 are aligned with each other. Then, the transmission rod 6 passes through the second transmission contour hole 511 and partially enters the first transmission contour hole 42, and finally the cover plate 13 is installed, so that the door lock is adjusted from the right-opening form to the left-opening form.

With reference to fig. 9 and 11, for the door lock of the "left-open" type, the direction in which the handle 3 swings upward is defined as the forward direction (i.e., the direction B2 in fig. 9 and 11), and during the forward swing of the handle 3, the driving protrusion 221 on the upper side in fig. 9 pushes the protrusion 52 to drive the transmission rod 6 and the transmission sleeve 4 to rotate forward together, so as to achieve unlocking. In the case of the "right-open" and "left-open" types, the unlocking directions of the lock cylinder are opposite, i.e., the direction B1 in fig. 10 and the direction B2 in fig. 11, respectively. For the door lock in the form of "left open", in the process of the handle 3 swinging reversely, the avoiding long hole 411 avoids the driving lug 221 in the process of the handle connecting sleeve 2 rotating, and the driving lug 221 does not contact with the protruding part 52 (the driving lug 221 idles), so the driving sleeve 4 and the driving rod 6 cannot be driven to rotate by the driving sheet 5, and therefore, the handle 3 swinging reversely cannot realize unlocking.

The arrangement of the driving protrusion 221, the avoiding slot 411 and the transmission piece 5 enables the handle 3 to effectively transmit when swinging in the forward direction, so that locking is realized, and transmission is disabled when swinging in the reverse direction, so that unlocking cannot be realized. In addition, the arrangement of the driving lug 221, the avoiding long hole 411 and the transmission piece 5 and the connection form of the handle 3 and the handle connecting sleeve 2 enable the door lock to be conveniently adjusted to be in a right-opening or left-opening form so as to adapt to doors with different installation modes.

Specifically, referring to fig. 1 to 5, the handle 3 is slidably provided with a button 31, the handle 3 is slidably provided with a lock lever 32, the lock lever 32 abuts against the button 31, in this embodiment, the handle 3 is provided with an inner cavity, the inner cavity of the handle 3 is fixedly connected with a mounting piece 33, the mounting piece 33 is provided with a through hole, and the button 31 is slidably disposed through the through hole. The front end of the button 31 is provided with a limit flange which cannot pass through the through hole of the mounting piece 33. The locking lever 32 is sleeved with a return spring 321, the rear end of the locking lever 32 is provided with a supporting part 322, the inner cavity of the handle 3 comprises a spring cavity, the front end of the return spring 321 supports against the front wall of the spring cavity, the rear end of the return spring 321 supports against the supporting part 322, and the supporting part 322 and the button 31 support against each other. Referring to fig. 6, the sidewall of the handle connecting sleeve 2 is provided with a through slot 25, and is communicated with the matching round hole 21 through the slot 25. The number of the through long holes 25 is two, and the two through long holes 25 are respectively arranged on two opposite side walls of the rear section of the hand connecting sleeve. Referring to fig. 7, the rear end of the transmission sleeve 4 is provided with two transmission notches 43, and the two transmission notches 43 are uniformly distributed along the circumferential direction of the transmission sleeve 4. The number of the lock levers 32 is two, each of the passage long holes 25 is matched to one lock lever 32, and each of the transmission notches 43 is matched to one lock lever 32. The cross section of the lock rod 32 is square, the size between the two inner walls of the long hole 25 is matched with the lock rod 32, and the size between the two inner walls of the transmission notch 43 is matched with the lock rod 32.

The locking lever 32 can be passed partially through the elongated hole 25 into the transmission notch 43. When the lock lever 32 is partially pushed into the transmission notch 43 by the button 31 (see fig. 4 and 5), and the handle 3 is swung in the opposite direction (i.e., the direction opposite to the direction B1 in fig. 8 or the direction opposite to the direction B2 in fig. 9), the handle 3 rotates the transmission rod 6 in the opposite direction by the lock lever 32, so that the lock is unlocked.

Referring to fig. 1, 4 and 13, a rolling bearing 71 is disposed in the middle of the hole wall of the mounting hole 11, a front axial support washer 72 and a rear axial support washer 73 are disposed on two sides of the rolling bearing 71, and an axial abutting washer 74 is disposed between the front axial support washer 72 and the rolling bearing 71. The handle adapter sleeve 2 is mounted on the inner ring of the rolling bearing 71, the front side of the front axial support washer 72 abuts against the rear wall of the drive disc 22, and the two sides of the axial abutment washer 74 abut against the front axial support washer 72 and the outer ring of the rolling bearing 71, respectively. The rear end opening edge of the mounting hole 11 is provided with an inner flange 111, and both sides of the rear axial support washer 73 abut against the inner flange 111 of the mounting hole 11 and the handle connecting sleeve 2, respectively.

The cross section of the front axial supporting washer 72 is in an "L" shape, the front axial supporting washer 72 includes a front axial ring 721 and a front radial ring 722, two sides of the front radial ring 722 respectively abut against the rear wall of the driving disk 22 and the axial abutting washer 74, and a gap is left between the inner wall of the front axial ring 721 and the outer wall of the handle connecting sleeve 2. The cross section of the axial abutting washer 74 is in a right trapezoid shape, the axial abutting washer 74 is provided with an avoiding annular inclined surface 741, and a gap is reserved between the avoiding annular inclined surface 741 and the inner ring of the rolling bearing 71. The front end face of the axial abutment washer 74 abuts against the rear wall of the front radial ring 722, and the rear end face of the axial abutment washer 74 abuts against the outer ring of the rolling bearing 71. The cross section of the rear axial support washer 73 is in an "L" shape, the rear axial support washer 73 includes a rear axial ring 731 and a rear radial ring 732, and two sides of the rear radial ring 732 respectively abut against the inner flange 111 of the mounting hole 11 and the handle connecting sleeve 2. A gap is left between the inner wall of the rear axial ring 731 and the outer wall of the handle connecting sleeve 2. The outer ring of the rolling bearing 71 abuts against the inner wall of the inner flange 111, the inner flange 111 is provided with a clearance gap 112, and the clearance gap 112 is used for avoiding the inner ring of the rolling bearing 71.

The rolling bearing 71 is a deep groove ball bearing. The front axial support washer 72 and the rear axial support washer 73 are made of wear-resistant plastic, such as nylon or polyoxymethylene.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims (10)

1. Door lock, its characterized in that: comprises a panel and a handle, wherein the panel is provided with a mounting hole which is used for mounting a handle connecting sleeve, the front end of the handle connecting sleeve is provided with a driving disc, the rear end of the handle connecting sleeve is fixedly connected with the handle, the middle part of the hole wall of the mounting hole is provided with a rolling bearing, two sides of the rolling bearing are respectively provided with a front axial supporting gasket and a rear axial supporting gasket, an axial abutting gasket is arranged between the front axial supporting gasket and the rolling bearing, the handle connecting sleeve is arranged on an inner ring of the rolling bearing, the front side of the front axial supporting washer is abutted against the rear wall of the driving disc, two sides of the axial abutting washer are respectively abutted against the front axial supporting washer and the outer ring of the rolling bearing, the edge of the opening at the rear end of the mounting hole is provided with an inner flange, and two sides of the rear axial supporting gasket respectively abut against the inner flange of the mounting hole and the handle connecting sleeve.

2. The door lock according to claim 1, wherein: the cross section of the front axial supporting gasket is L-shaped, the front axial supporting gasket comprises a front axial ring and a front radial ring, two sides of the front radial ring are respectively abutted against the rear wall of the driving disc and the axial abutting gasket, and a gap is reserved between the inner wall of the front axial ring and the outer wall of the handle connecting sleeve.

3. The door lock according to claim 1, wherein: the cross section of the rear axial supporting gasket is L-shaped, the rear axial supporting gasket comprises a rear axial ring and a rear radial ring, two sides of the rear radial ring are respectively abutted against the inner flange of the mounting hole and the handle connecting sleeve, and a gap is reserved between the inner wall of the rear axial ring and the outer wall of the handle connecting sleeve.

4. The door lock according to claim 2, wherein: the cross-section that the axial leaned on the packing ring is right trapezoid, the axial is leaned on the packing ring and is equipped with dodges cyclic annular inclined plane, dodge cyclic annular inclined plane with leave the clearance between antifriction bearing's the inner circle, the axial is leaned on the preceding terminal surface that leans on the packing ring and is leaned on preceding radial ring's back wall, the axial is leaned on the rear end face that leans on the packing ring and is leaned on antifriction bearing's outer lane.

5. The door lock according to claim 1, wherein: the rolling bearing is a deep groove ball bearing.

6. The door lock according to claim 1, wherein: the front axial supporting washer and the rear axial supporting washer are both made of nylon.

7. The door lock according to claim 1, wherein: the front axial supporting washer and the rear axial supporting washer are both made of polyformaldehyde.

8. The door lock according to claim 1, wherein: the rear end of the handle connecting sleeve is fixedly connected with the handle through a screw.

9. The door lock of claim 8, wherein: the cross section profile of the rear section of the handle connecting sleeve is square, a square cavity is arranged inside the handle, the rear section of the handle connecting sleeve is matched with the square cavity, and the square cavity is fixedly connected with the rear end of the handle connecting sleeve through screws.

10. The door lock according to claim 1, wherein: the outer ring of the rolling bearing abuts against the inner wall of the inner flange, the inner flange is provided with a clearance gap, and the clearance gap is used for avoiding the inner ring of the rolling bearing.

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