CN210316837U

CN210316837U - Protective structure of door lock handle drive shaft

Info

Publication number: CN210316837U
Application number: CN201920629863.3U
Authority: CN
Inventors: 徐建阳
Original assignee: Wonly Security And Protection Technology Co ltd
Current assignee: Wonly Security And Protection Technology Co ltd
Priority date: 2019-05-05
Filing date: 2019-05-05
Publication date: 2020-04-14
Anticipated expiration: 2029-05-05

Abstract

The utility model provides a protective structure of a handle driving shaft, which comprises a driving shaft connected with a door lock driving link, wherein the outer end of the driving shaft is connected with an outer door handle through a clutch; an outer decorative plate arranged at the outer side of the door leaf, covering the clutch at the outer side of the door leaf and having a through hole for passing through the driving shaft; the concave cavity inner lining plate is fixed on the outer decorative plate and is arranged between the outer side of the door leaf and the clutch and close to the clutch, and a lining plate hole for the driving shaft to pass through is formed in the lining plate; and a sheath rotatably sleeved on the driving shaft, wherein the sheath is a hollow sleeve and is positioned between the lining plate and the door leaf through a positioning device associated with the lining plate. The utility model discloses a protective structure of lock handle drive shaft owing to utilize the definite position location sheath of welt, avoids slotting in the drive shaft at constant head tank/location jump ring structure, and the fluting department stress concentration that causes leads to the problem of the easy damage of drive shaft, has simplified the protective structure of lock handle drive shaft simultaneously.

Description

Protective structure of door lock handle drive shaft

Technical Field

The utility model relates to a tool to lock technical field, concretely relates to protective structure of door lock handle drive shaft.

Background

The square shaft of the existing door lock is a column structure with a square whole body, is arranged in a square hole of the door lock, and is a transmission device between a front handle and a rear handle of the door lock and a lock body. In most current prior art, the door outer handle has a connection mode with the square shaft, when the door lock is opened without the key, the door outer handle and the door lock do not have a transmission connection relationship, namely, the handle can rotate relative to the square shaft, and after the door lock is opened by the key, the handle is in transmission connection with the square shaft to drive the square shaft to rotate. The connection mode is usually realized by a clutch arranged between an outer door handle and a square shaft, the existing square shaft has no protection structure for the part extending out of an outer panel, when a thief steals in a room, an illegal opener can pull the outer door handle outwards hard, the connection structure arranged on the inner side of the outer panel is utilized to drive the outer panel, a gap of 1-3 mm can be formed between the outer panel of the outdoor part of the lock and a door panel, and the illegal opener thief can utilize a specially-made powerful pliers with teeth to extend into the gap to clamp the square shaft so as to lock the door. Therefore, a protection structure is required to be arranged on the square shaft to prevent the square shaft from being driven by the pliers to rotate.

In the prior art, chinese patent publication No. CN203584007U discloses a bidirectional positioning idle-run security door lock structure, which utilizes an idle-run sleeve to protect a hollow screw for fixing an outer panel of a lock chamber, and in order to determine that the idle-run sleeve is always located at a position to be protected on the hollow screw, the idle-run sleeve is sleeved on the hollow screw through a mutually matched clamp spring groove and a clamp spring, and the clamp spring groove and the clamp spring jointly form a positioning device of the idle-run sleeve. When the idle sleeve is clamped by the pliers, the idle sleeve can rotate along with the pliers but cannot drive the protected panel hollow screw, so that the outer panel is prevented from being detached due to the rotation of the hollow screw, and the internal structure of the door lock is prevented from being exposed. This prior art is provided on the hollow screw, the fixed component for fixing the front and rear panels of the door lock. The normal state of the force is a static stretching state. However, for the square shaft which is frequently in a torsion rotation state, if a positioning mode that the clamp spring is matched with the clamp groove is adopted, the clamp spring groove is arranged on the square shaft, the surface defect of the material can be artificially increased, and the stress structure of the square shaft is changed. Because the square shaft is always subjected to torsion generated by rotation of the handle in use, the defect can be deepened gradually along with the rotation of the square shaft, and finally the square shaft is easy to deform or even break due to fatigue, so that the service life of the door lock is influenced, and a square shaft protection structure which does not damage the surface stress of the square shaft is needed.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in overcoming current idle running security door lock structure and need causing the defect of weak structure by the processing of protection piece to a protection structure by the protection piece is protected under the prerequisite of not protecting the piece in the protection that is provided one kind.

The utility model discloses a protective structure of door lock handle drive shaft, include

The driving shaft penetrates through the through hole in the door leaf to be connected with the door lock in a driving mode, and the outer end of the driving shaft is connected with the door outer handle through a clutch;

the outer decorative plate is arranged on the outer side of the door leaf, covers the clutch on the outer side of the door leaf and is provided with a through hole for penetrating the driving shaft;

the lining plate is provided with a lining plate hole for the driving shaft to pass through; the clutch is fixed in the outer decorative plate and arranged between the outer side of the door leaf and the clutch and close to the clutch;

also comprises

The sheath is a hollow sleeve which is rotatably sleeved on the driving shaft and is positioned between the lining plate and the door leaf through a positioning device which is associated with the lining plate.

The positioning device is a bulge which is fixed on the sheath, protrudes outwards from the sheath in the radial direction and has the maximum radial dimension larger than the radial dimension of the liner hole; the projections are held in place by the clamping arrangement acting with the liner.

The projection is sandwiched between the clutch and the backing plate.

The projection is integrally formed with the sheath.

The protruding part is of a flange plate structure.

The technical effects of the utility model reside in that:

the utility model discloses a protective structure of lock handle drive shaft, through positioner with the welt is related, utilizes the definite position of welt comes to the sheath location has avoided constant head tank/location jump ring structure to need slot on this the application of force part that opens the door of drive shaft, leads to the application of force in-process to locate stress concentration at the slot for the easy problem of damaging of drive shaft.

The positioning device adopts a structure of the radial protruding part to be matched with the lining plate in a clamping way, so that the matching structure of the positioning device and the lining plate is simpler, and the positioning is firm. And the structure of sandwiching the projection between the clutch and the backing plate is further simplified.

The protruding part and the sheath are integrally formed and combined into a part, so that the production of the part is simplified, and the installation of the protection structure of the driving shaft of the door lock handle is also simplified.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of the appearance of a door lock equipped with a protective structure for a handle drive shaft according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic view of a protective structure of a door lock handle driving shaft according to a first embodiment of the present invention.

Description of reference numerals:

1-driving shaft, 2-door outer handle, 3-outer decorative plate, 4-clutch, 5-sheath, 6-lining plate and 7-lining plate hole.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

Referring to fig. 1 and 2, fig. 1 is a schematic view of the appearance of the door lock with the protective structure of the handle driving shaft, and fig. 2 is a sectional view of the door lock with the protective structure of the handle driving shaft. The utility model discloses a protective structure of handle drive shaft, include

The driving shaft is a square shaft which normally drives a bolt of the door lock to move, the outer end of the square shaft is connected with the door outer handle 2 through the clutch 4, sequentially passes through a through hole in the outer decorative plate 3, the hollow sleeve-shaped sheath 5, the lining plate hole 7 in the lining plate 6 and a through hole in the door leaf, and is in driving connection with the door lock. The outer decoration plate 3 is provided with a front plate and a side wall extending out from the front plate towards the door leaf panel, a through hole for penetrating through the square shaft is formed in the front plate, the outer decoration plate 3 is arranged on the outer side of the door leaf, and the clutch 4 is covered on the outer side of the door leaf by utilizing a cavity formed by the front plate and the side wall. The lining plate 6 is fixed in the concave cavity of the outer decorative plate 3, the space between the outer side of the door leaf and the clutch 4 is arranged close to the clutch 4, and a lining plate hole 7 for the square shaft to pass through is formed in the lining plate 6.

In this embodiment, the sheath 5 is rotatably sleeved on the square shaft, and one end of the sheath 5 is provided with an integrally formed flange plate as a protruding part of the positioning device. The sheath 5 passes through the liner hole 7 on the liner 6, and the outer diameter of the flange plate is larger than the inner diameter of the liner hole 7 so that the flange plate is sandwiched by the liner 6 and the clutch 4. The sheath 5 simultaneously projects through the lining hole 7 into the opening in the door leaf.

When a thief extends into the toothed pliers from a gap between the outer side of the door leaf and the lining plate 6, the sheath 5 can be clamped to drive the sheath 5 to rotate, the sheath 5 is sleeved on the square shaft, the square shaft is not driven to rotate during rotation, the toothed pliers cannot drive the square shaft to rotate, and therefore the purpose of opening the door lock by rotating the square shaft 1 cannot be achieved by the thief.

In the above embodiment, the protrusion of the positioning device may be replaced by a plurality of claws fixed to one end of the sheath 5. The claws are evenly distributed along the outer circumference of the jacket 5 and extend radially outward, and the claws are sandwiched between the clutch 4 and the backing plate 6.

In the former embodiment, two adjacent lugs are provided on two different sides of the backing plate 6 to clamp on the backing plate hole 7, and then are positioned only by means of the backing plate 6.

In the above embodiment, the protruding portion of the positioning device may be replaced by an inner diameter snap spring having an outer diameter larger than that of the liner hole 7, and the snap spring is fixedly mounted on the sheath 5 through a snap groove formed at one end of the hollow sleeve of the sheath 5. One embodiment is a circlip, which is clamped between the backing plate 6 and the clutch 4. In another embodiment, the number of the clamp springs is two, and the two clamp springs are respectively arranged on two sides of the lining plate 6 to clamp the lining plate 6.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A protective structure for a door lock handle drive shaft includes

The driving shaft (1) penetrates through a through hole in the door leaf to be in driving connection with the door lock, and the outer end of the driving shaft (1) is connected with the door outer handle (2) through a clutch (4);

the outer decorative plate (3) is arranged on the outer side of the door leaf, covers the clutch (4) on the outer side of the door leaf and is provided with a through hole for penetrating the driving shaft (1);

the lining plate (6) is provided with a lining plate hole (7) for the driving shaft (1) to pass through; is fixed in the outer decorative plate (3) and is arranged between the outer side of the door leaf and the clutch (4) and close to the clutch (4);

it is characterized by also comprising

A sheath (5) which is a hollow sleeve rotatably sleeved on the driving shaft (1) and is positioned between the lining plate (6) and the door leaf through a positioning device associated with the lining plate (6).

2. A door lock handle drive shaft shielding structure according to claim 1, wherein said positioning means is a projection fixed to said sheath (5), projecting radially outwards from said sheath (5) and having a maximum radial dimension greater than the radial dimension of said liner hole (7); the projections (61) are held in place by the action of a clamping arrangement with the backing plate (6).

3. A door lock handle drive shaft shielding structure according to claim 2, wherein said projection is clamped between said clutch (4) and said backing plate (6).

4. A door lock handle drive shaft shielding structure according to claim 2 or 3, wherein said projection is formed integrally with said sheath (5).

5. A door lock handle drive spindle shield arrangement according to claim 2, wherein said projection is a flanged disc arrangement.