TWI675957B - Dust cover and lock with dust cover - Google Patents

Abstract

The invention relates to a dust cover of a lock and a lock with a dust cover; the dust cover includes a cover, a connecting portion and a fixing ring, and one side of the cover protrudes to form a fitting ring wall to pass through the key hole of the lock; The two ends of the connecting portion are respectively connected to the dust cover and the fixing ring; the outer wall of the lock has a mounting ring groove and a door plate abutting portion, and the mounting ring groove is located between the opening of the key hole of the lock and the door plate abutting portion, and the lock passes through the door plate The abutting part is tightly installed on the door panel, and the dust cover is sleeved in the mounting ring groove of the lock with a fixing ring. The fixing ring does not contact and abut against the door plate and can rotate freely; thereby, the rotatable dust cover is installed on the door. It is more convenient to use; it is easy to replace the dust cover when it is broken; the appearance of the dust cover can be thinned, and the distance between the lock and the door panel is shorter, which is more beautiful.

Description

Dust cover and lock with dust cover

The invention relates to a dust cover of a lock, in particular to a dust cover of a plum lock.

Existing locks must have a keyhole in the lock head, so that foreign objects such as dust and rain can easily enter the lock through the keyhole, causing the lock to operate irregularly and affecting the life of the lock; especially the hollow plum lock in the existing locks due to the keyhole The area is larger than that of ordinary locks, so it is particularly vulnerable to the intrusion of foreign objects. To solve this problem, at present, there have been merchants designing dust covers that are connected to the lock and can close the keyhole to prevent foreign objects from invading. Specifically, There are two types of dust cover:

First, the metal dust cover 91 (as shown in FIGS. 9 and 10): The fixing ring 911 of the metal dust cover 91 is sandwiched between the door panel 92 and the lock 93 of the lock, and the cover 912 of the metal dust cover 91 is pivotally fixed. The ring 911 and the torsion spring 913 drive the cover 912 to rotate toward the lock head 93 of the lock to ensure that the cover 912 can be closed to cover the keyhole. However, the metal dust cover 91 needs to hold the cover 912 with one hand when in use To keep it open, the other hand can perform the unlocking action, and the user cannot perform the unlocking action with one hand, which is very inconvenient in use.

Second, the rubber dust cover 95 (as shown in FIG. 11): The rubber dust cover 95 is also sandwiched between the door panel and the lock head 93 of the lock with a fixing ring 951, and the cover 952 and the fixing ring 951 are connected to the strip shape respectively. The two ends of the connecting portion 953; because the rubber material is weak, the thickness of the fixing ring 951 must be made thick to maintain sufficient strength. Therefore, after the rubber dust cover 95 is installed, the lock will be affected by the thickness of the fixing ring 951. Make the lock head 93 prominently protrude from the door panel, and affect the appearance of the product. In addition, the lock must be firmly fixed on the door panel, and the lock is clamped by the fixing ring 951 of the rubber dust cover 95 and the nut to fix the door panel. The retaining ring 951 will abut against the door panel, and this will prevent the rubber dust cover 95 from rotating relative to the lock. Therefore, the rubber dust cover 95 must be rotated to the correct angle during installation to prevent the cover 952 of the rubber dust cover 95 from When the lock 93 is not covered, it may interfere with the door frame and affect the opening and closing of the door panel, making the rubber dust cover 95 inconvenient in installation and use. In addition, if the rubber dust cover 95 is broken and needs to be replaced, the lock 93 must be removed from the door panel. It can be replaced only when it is removed, and maintenance is very troublesome.

Therefore, the dust cover and the lock with the dust cover of the prior art need to be improved.

In view of the aforementioned shortcomings and shortcomings of the prior art, the present invention provides a dust cover and a lock with a dust cover to facilitate use and maintenance.

In order to achieve the above-mentioned object of the invention, the technical means adopted in the present invention is to design a dust cover, which includes: a cover plate, which is a flat plate; a fitting ring wall, which protrudes to form a side surface of the cover plate, and uses A threaded portion is fitted into a keyhole; a connecting portion is a bendable strip; one end of the connecting portion is connected to the cover plate; a first bending groove is recessed on one side of the connecting portion, The first bending groove extends to opposite sides of the connecting portion; a fixing ring is connected to the other end of the connecting portion.

In order to achieve the above-mentioned object of the present invention, the present invention further provides a lock with a dust cover, which includes: a lock including a lock, one end of which is recessed with a key hole formed therein; A mounting ring groove is provided; a door plate abutting portion protrudes from the outer wall surface of the lock, and the mounting ring groove is located between the opening of the key hole and the door plate abutting portion; A dust cover as described above, the fixing ring of the dust cover is rotatably sleeved in the mounting ring groove of the lock head, and the fitting ring wall of the dust cover is selectively inserted into the key hole.

The invention has the advantage that the lock head of the lock is provided with a mounting ring groove and a door plate abutting portion, and the lock head is tightly installed on the door plate through the door plate abutting portion, and the plastic dust cover is sleeved with a fixed ring In the mounting ring groove of the lock head, the fixing ring will not contact and abut against the door panel, so it can rotate freely in the mounting ring groove. The invention has the following advantages:

First, because the lock with a dust cover of the present invention is tightly abutted against the door plate through a door plate abutment portion provided on the lock head, the fixing ring of the dust cover does not abut the door plate, thereby making the fixing ring of the dust cover easy to contact the lock head. It is also easy to fit into the groove of the mounting ring of the lock when it is separated. Therefore, it is not necessary to remove the lock when replacing the damaged dust cover, thereby saving time. Second, the dust cover can rotate relative to the lock head, which is convenient in installation and use.

Third, compared with the conventional dust cover made of rubber material, the strength is weaker, so the thickness of the fixing ring must be made thicker. The fixing ring of the dust cover of the present invention is made of plastic material and has a stronger structural strength. The thickness can be thin, so the lock used to set the fixing ring can be made shorter together, so the distance that the lock protrudes from the door panel is relatively short and looks more beautiful.

Fourth, the cover of the dust cover of the prior art is used to cover the outer wall surface of the lock to achieve the function of closing the keyhole. Therefore, the lock needs to have a certain length before the cover can cover the cover firmly. However, the cover of the dustproof cover of the present invention is directly inserted and fixed in the key hole of the lock through the fitting ring wall, so the length of the lock does not affect the combination of the cover, so the length of the lock can be adjusted. It is made shorter, which shortens the distance that the lock head protrudes from the door panel, and it looks more beautiful. In addition, the overall thickness of the cover is thinner, and the area of the cover can be reduced to only slightly larger than the opening area of the keyhole. Achieve cost savings.

Further, in the dust-proof cover, the cover body further includes a holding protrusion protruding from a side of the cover opposite to the fitting ring wall.

Further, in the dust-proof cover, the holding protrusion is formed on a peripheral edge of the cover plate, and the holding protrusion and the connecting portion are respectively located on opposite sides of the cover plate.

Further, in the dust cover, a plurality of separation grooves are recessed on the top side of the fitting ring wall, the separation grooves extend from the top side of the fitting ring wall toward the cover plate, and the separation grooves Surround interval setting.

Further, in the dust cover, the fitting ring wall includes: a fitting portion connected to the cover plate; and a guide portion protrudingly formed on a side of the fitting portion opposite to the cover plate, The thickness of the guide portion is gradually reduced in a direction away from the cover plate.

Further, in the dustproof cover, a direction in which the fitting annular wall protrudes from the cover is defined as a cover direction, and the first bending groove is provided on a side of the connecting portion facing the cover direction.

Further, in the dust cover, the first folding bay of the connecting portion A second bending groove is further recessed on the bottom surface of the bending groove.

Further, in the lock with a dust cover, the abutting portion of the door plate forms a side wall surface of the mounting ring groove.

Further, the lock with a dust cover, wherein the lock is a plum lock.

10‧‧‧ Cover

11‧‧‧ Cover

12‧‧‧ mosaic ring wall

121‧‧‧ Fitting section

122‧‧‧Guide

123‧‧‧Separation tank

20‧‧‧ Connection Department

21‧‧‧Second bending groove

22‧‧‧The first bending groove

30‧‧‧ holding bump

40‧‧‧ retaining ring

50‧‧‧Lock

501‧‧‧ panel section

502‧‧‧Installation section

51‧‧‧keyhole

52‧‧‧Door abutting section

53‧‧‧Mounting ring groove

60‧‧‧nut

L1‧‧‧Building direction

50A‧‧‧Lock

51A‧‧‧Keyhole

A‧‧‧Door panel

91‧‧‧metal dust cover

911‧‧‧Fixing ring

912‧‧‧cover

913‧‧‧torsion spring

92‧‧‧Door panel

93‧‧‧Lock

95‧‧‧ rubber dust cover

951‧‧‧Fixing ring

952‧‧‧ cover

953‧‧‧Connection Department

FIG. 1 is a perspective view of a dust cover of the present invention.

FIG. 2 is a schematic side view of a dust cover of the present invention.

FIG. 3 is a schematic front view of a dust cover of the present invention.

FIG. 4 is a schematic rear view of the dust cover of the present invention.

FIG. 5 is a perspective view of a first embodiment of a lock with a dust cover according to the present invention.

FIG. 6 is an exploded view of a first embodiment of a lock with a dust cover according to the present invention.

FIG. 7 is an exploded view of a second embodiment of the lock with a dust cover of the present invention.

8 is a schematic cross-sectional view of a first embodiment of a lock with a dust cover according to the present invention.

9 and 10 are schematic diagrams of the use of a lock with a metal dust cover in the prior art.

11 is a perspective view of a conventional rubber dust cover sleeved on a lock.

In the following, the technical means adopted by the present invention to achieve the intended purpose of the present invention will be further explained in conjunction with the drawings and preferred embodiments of the present invention.

Please refer to FIGS. 1 to 4. The dust cover of the present invention includes a cover body 10, a connecting portion 20, a holding bump 30 and a fixing ring 40. The material of the dust cover is plastic, and in this embodiment, The dust cover is made of high-strength engineering plastic to reduce volume and extend life, but it is not limited to this.

The aforementioned cover body 10 includes a cover plate 11 and a fitting ring wall 12. The fitting ring wall 12 protrudes to form a side surface of the cover plate 11. The direction in which the fitting ring wall 12 protrudes from the cover plate 11 is defined as a cover. Direction L1 (as shown in FIG. 2); in this embodiment, the fitting ring wall 12 includes a fitting portion 121 and a guide portion 122. The fitting portion 121 is connected to the cover plate 11, and the guide portion 122 is formed protruding from The side of the fitting portion 121 opposite to the cover plate 11, and the thickness of the guide portion 122 is gradually reduced in a direction away from the cover plate 11. As a result, the fitting ring wall 12 can be guided by the sharp tip of the guide portion 122 and It is easy to insert into the keyhole opening of the lock, and then use the thick fitting portion 121 to enable the cover body 10 to be stably inserted into the keyhole, but not limited to this. The thickness can also be uniform; in this embodiment, a plurality of separation grooves 123 are recessed on the top side of the fitting ring wall 12, and the separation grooves 123 are from the top side of the fitting ring wall 12 (the outer end of the guide portion 122). It extends toward the cover plate 11 and the separation groove 123 is arranged around the space. The separation groove 123 can make the fitting ring wall 12 easier to deform, and then the fitting ring wall 12 can be more easily penetrated into the key hole.

The aforementioned connecting portion 20 is a bendable strip. One end of the connecting portion 20 is connected to the peripheral edge of the cover plate 11. One side of the connecting portion 20 is recessed with a first bending groove 22, and the first bending groove 22 extends to the connection. In this embodiment, a second bending groove 21 is further recessed on one side of the connecting portion 20, and the first bending groove 22 and the second bending groove 21 are both provided on the connecting portion 20. One side facing the capping direction L1, and the second bending groove 21 is formed on the bottom surface of the first bending groove 22, but the installation positions of the first bending groove 22 and the second bending groove 21 are not limited thereto. Only when the cover body 10 is pushed toward the capping direction L1, the connecting portion 20 can be easily bent and deformed. For example, the first bending groove 22 and the second bending groove 21 can be respectively provided on the connecting portion 20 and the cover. Opposite sides of the direction L1.

The aforementioned holding bumps 30 are protruded and formed on a side of the cover plate 11 opposite to the fitting ring wall 12. In this embodiment, the holding bumps 30 are protruded and formed on the peripheral edge of the cover plate 11, and the holding bumps 30 and The connecting portions 20 are located on opposite sides of the cover plate 11 respectively, so that the user can pull out the fitting ring wall 12 of the cover 10 from the key hole of the lock by grasping the holding protrusion 30, but the holding protrusion 30 The position is not limited to this. For example, the holding bumps 30 may be protrudingly formed at the center of one side of the cover 11 opposite to the fitted ring wall 12. Even the dust cover may not have the holding bumps 30. Instead, the cover 10 is separated from the lock by other methods such as the shape of the cover 11.

The aforementioned fixing ring 40 is connected to an end of the connecting portion 20 opposite to the cover 10. The dust cover can be sleeved on the lock through the fixing ring 40 to avoid the dust cover from being completely separated from the lock and easy to be lost.

Please refer to FIG. 5, FIG. 6 and FIG. 8. The first embodiment of the lock with a dust cover of the present invention includes a lock head 50, a nut 60 and a dust cover as described above; the lock is installed on a door panel A on.

One end of the aforementioned lock head 50 is concavely formed with a key hole 51. In this embodiment, the lock head 50 is a cylindrical plum lock, and specifically, the lock head 50 is a hollow plum lock, because of the hollow plum lock The cross-sectional area of the opening of the keyhole 51 of the lock 50 is larger than the cross-sectional area of the keyhole 51 of a normal plum lock. Therefore, it is more necessary to use a dust cover to prevent foreign objects such as dust from entering the lock 50 through the keyhole 51. The form of the head 50 is not limited to the plum lock and the hollow plum lock. The present invention is also applicable to other types of locks. The outer wall surface of the lock 50 has a door panel abutting portion 52 protruding. In this embodiment, the door panel abuts The portion 52 surrounds the axis of the cylindrical lock 50, but is not limited to this. The door plate abutting portion 52 may also be a plurality of bumps, etc., as long as it can be used to abut the door plate. The lock 50 A mounting ring groove 53 is recessed around the outer wall surface, and the mounting ring groove 53 is located between the opening of the key hole 51 and the door panel abutting portion 52. In this embodiment, the mounting ring groove 53 is adjacent to the door panel abutting portion 52, and The door plate abutting portion 52 forms a side wall surface of the installation ring groove 53, thereby shortening the overall length of the lock 50, but is not limited thereto. The door plate abutting portion 52 and the installation ring groove 53 may be spaced apart. In the embodiment, the lock head 50 includes a panel section 501 and a mounting section 502, the opening of the key hole 51, the mounting ring groove 53 and the door panel abutment portion 52 are located on the panel section 501, and the outer wall surface of the mounting section 502 has external threads; When the lock is installed on the door panel A, the installation section 502 of the lock head 50 penetrates the door panel, and the nut 60 is screwed to the installation section 502, thereby One side of the nut 60 and the door plate abutting portion 52 of the lock head 50 are respectively pressed against the two opposite sides of the door plate A to securely install the lock on the door plate A, but the way of installing the lock on the door plate A is not This is a limitation, as long as the door panel abutting portion 52 of the lock head 50 can abut against one side of the door panel A; in addition, the shape of the door panel abutting portion 52 does not surround the axis of the columnar lock head 50 The circle is limited, as long as the lock head 50 can firmly and firmly abut a side surface of the door panel A through the door panel abutting portion 52.

The aforementioned dust cover is the same as the dust cover of the present invention described in FIG. 1 to FIG. 3, so it will not be repeated; the fixing ring 40 of the dust cover is rotatably sleeved in the mounting ring groove 53 of the lock 50. The fitting ring wall 12 selectively passes through the fitting key hole 51.

Please refer to FIG. 8, when the present invention is installed on the door panel A, the fixing ring 40 of the dust cover is inserted into the mounting ring groove 53 of the lock head 50 in a deformed manner, and the lock head 50 and the dust cover are combined, and then The lock head 50 is fixed to the door panel A with the nut 60 to complete the installation of the dust cover and the lock; after the dust cover and the lock are installed, the cover 10 of the dust cover can be usually covered with a key hole 51 for closing the lock to avoid dust When foreign objects enter the lock head 50; when the dust cover is damaged due to aging or careless use, the damaged dust cover can be removed and a new dust cover can be reinstalled.

Please refer to FIG. 7. The second embodiment of the lock with dust cover of the invention is substantially the same as the first embodiment, except that the lock 50A is a non-hollow plum lock, and a cylinder is formed in the center of the keyhole 51A. However, the cover body 10 of the dust cover can still cover the key hole 51A of the closed lock.

In summary, in the present invention, the fitting ring wall is provided on the cover body of the dust cover, and the cover body can pass through the key ring of the fitting ring wall to fit the lock head to reduce the thickness and area of the dust cover; In the lock of the invention, the door plate abutment portion is tightly pressed against the door plate, whereby the fixing ring of the dust cover can freely rotate in the installation ring groove of the lock and become installed, used, and maintained.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as above with the preferred embodiments, they are not intended to limit the present invention. Generally, a person skilled in the art can use the disclosed technical content to make minor changes or modifications to equivalent embodiments without departing from the technical solution of the present invention. Anyone who does not depart from the technical solution of the present invention according to the present invention Technical essence of the invention Any simple modifications, equivalent changes, and modifications made to the above embodiments still fall within the scope of the technical solution of the present invention.

Claims (10)

A dust cover is made of plastic. The dust cover includes: a cover body including: a cover plate, which is a flat plate; a fitting ring wall, which protrudes to form a side surface of the cover plate, and is used for wearing It is fitted in a keyhole; a connecting part is a bendable strip; one end of the connecting part is connected to the cover plate; a first bending groove is recessed on one side of the connecting part, and the first A bending groove extends to opposite sides of the connecting portion; a fixing ring is connected to the other end of the connecting portion. The dust-proof cover according to claim 1, wherein the cover body further includes a holding protrusion protruding from a side of the cover plate opposite to the fitting ring wall. The dust-proof cover according to claim 2, wherein the holding protrusion is formed on a peripheral edge of the cover plate, and the holding protrusion and the connecting portion are respectively located on opposite sides of the cover plate. The dust cover according to any one of claims 1 to 3, wherein a plurality of separation grooves are recessed on the top side of the fitting ring wall, and the separation grooves extend from the top side of the fitting ring wall toward the cover plate. , And the separation grooves are arranged around the interval. The dust cover according to any one of claims 1 to 3, wherein the fitting ring wall includes: a fitting portion connected to the cover plate; and a guide portion protrudingly formed on the fitting portion opposite to the fitting portion. On one side of the cover plate, the thickness of the guide portion gradually decreases in a direction away from the cover plate. The dust-proof cover according to any one of claims 1 to 3, wherein a direction in which the fitting ring wall protrudes from the cover is defined as a cover direction, and the first bending groove is provided at the connecting portion toward the cover. Set one side of the direction. The dust-proof cover according to any one of claims 1 to 3, wherein a bottom surface of the first bending groove of the connecting portion is further recessed with a second bending groove. A lock with a dust cover includes: a lock including a lock head, one end of which is recessed with a key hole; an outer wall surface of the lock head is recessed with a mounting ring groove; and the outside of the lock head A wall plate abutment portion protrudes from the wall surface, and the mounting ring groove is located between the opening of the keyhole and the door plate abutment portion; a dust cover as described in any one of claims 1 to 7, the fixing of the dust cover A ring is rotatably sleeved in the mounting ring groove of the lock head, and the fitting ring wall of the dust cover is selectively passed through the key hole. The lock with a dust cover according to claim 8, wherein the abutting portion of the door plate forms a side wall surface of the mounting ring groove. The lock with a dust cover according to claim 8 or 9, wherein the lock is a plum lock.