A telescopic limit device

Abstract

The present invention proposes a telescopic limit device, which includes at least one telescopic limit structure, and the telescopic limit structure includes a base, a support part and a cam, the support part and the cam are respectively movably connected to the base, and the support part can be raised to protrude from the telescopic limit device or lowered and retracted in the telescopic limit device by rotating the cam; the telescopic limit device proposed in the present invention can dynamically adjust the height of the telescopic limit device protruding from the support part, can eliminate the gap between the telescopic limit device and the external door, so that the limit device can be vertically installed in the external door, thereby forming a flush, stable and firm connection between the telescopic limit device and the external door lock handle; the telescopic limit device can dynamically adjust the height of the telescopic limit device protruding from the support part so that the telescopic limit device can meet various installation requirements.

Description

Technical Field

[0001] The invention relates to the field of hardware, and in particular to a telescopic limiting device. Background Art

[0002] The handle on the door lock is the most frequently used component of the entire door lock. During frequent use, the handle often deviates in position relative to the door, which in turn damages the handle. Therefore, when installing the door lock, in order to make the handle of the door lock and the door form a firm connection, a limit device is often required to limit the position of the handle so that the handle and the door form a firm connection. However, the limit device is installed inside the door. Ideally, the limit device is installed vertically in the door and forms a seamless connection with the door. Since most doors are made of wood, it is difficult for the limit device to form a seamless connection with the door, and it is difficult for the limit device to be installed completely vertically in the door. Once the limit device deviates, it cannot be adjusted, resulting in the connection between the handle and the limit device not being a flush connection, but having a certain inclination angle, which in turn causes the handle, door and limit device to fail to form the strongest combination. In this case, the handle is easily damaged when used. Summary of the invention

[0003] In order to solve the above problem, the present invention proposes a telescopic limit device capable of adjusting the telescopic height.

[0004] The present invention is achieved through the following technical solutions:

[0005] The present invention proposes a telescopic limit device, which includes at least one telescopic limit structure, and the telescopic limit structure includes a base, a support part and a cam. The support part and the cam are respectively movably connected to the base, and the support part can be raised and protruded from the telescopic limit device or lowered and contracted within the telescopic limit device by rotating the cam.

[0006] Furthermore, the base is provided with a first receiving groove and a first arc-shaped receiving groove connected to the first receiving groove, the first receiving groove is also provided with a positioning column fixedly connected to the base, the cam is provided with a first mounting hole, the positioning column is installed in the first mounting hole so that the cam and the positioning column form a movably connected, the support part is movably accommodated in the first arc-shaped receiving groove, and the cam matches the support part.

[0007] Furthermore, a slide rail is provided on the outside of the cam, and a card point is provided at a position at the bottom of the support part corresponding to the cam. The card point is movably accommodated in the slide rail. When the cam is rotated, the slide rail rotates to drive the card point to rise or fall, so that the support part protrudes out of the telescopic limit device or shrinks in the telescopic limit device.

[0008] Furthermore, a first limiting plate fixedly connected to the base is provided in the first arc-shaped storage groove, and the support part also includes a baffle fixedly connected to the support part, and a limiting groove is provided on the baffle. When the support part is movably accommodated in the first arc-shaped storage groove, the first limiting plate passes through the limiting groove.

[0009] Furthermore, the telescopic limiting structure also includes: an upper cover; a second arc-shaped receiving groove is provided on the upper cover, the upper cover is fixedly connected to the base, the support portion is accommodated in the second arc-shaped receiving groove, and the baffle can be snap-connected with the upper cover.

[0010] Furthermore, a second limit plate fixedly connected to the upper cover is provided in the second arc-shaped storage groove, and the upper cover is fixedly connected to the base. The support portion rises as the cam rotates. When the support portion is separated from the first arc-shaped storage groove, the second limit plate and the baffle form a snap-fit ​​connection to prevent the support portion from falling off the telescopic limit device.

[0011] Furthermore, the upper cover is provided with a second receiving groove, the second receiving groove is communicated with the second arc-shaped receiving groove, and when the upper cover is mounted on the base, the cam is received in the second receiving groove.

[0012] Furthermore, a second mounting hole communicating with the first mounting hole is provided at one end of the cam away from the base, and the cam can be screwed through the second mounting hole to rotate.

[0013] Furthermore, a first limiting portion connected to the slide rail is provided at one end of the slide rail, and when the clamping point is located in the first limiting portion, the support portion is located at the lowest position and the support portion is limited.

[0014] Furthermore, a second limiting portion is provided at one end of the slide rail away from the first limiting portion. When the clamping point is located in the second limiting portion, the supporting portion is located at the highest position and is limited.

[0015] Beneficial effects of the present invention:

[0016] The telescopic limit device proposed in the present invention can dynamically adjust the height of the telescopic limit device protruding from the support part, can eliminate the gap between the telescopic limit device and the external door, so that the limit device can be vertically installed in the external door, thereby forming a flush, stable and firm connection between the telescopic limit device and the external door lock handle; the telescopic limit device can dynamically adjust the height of the telescopic limit device protruding from the support part so that the telescopic limit device can meet various installation requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1is a perspective view of the telescopic limiting device of the present invention;

[0018] Figure 2 It is a front view of the base of the telescopic limiting device of the present invention;

[0019] Figure 3 It is a front view of the support portion of the telescopic limiting device of the present invention;

[0020] Figure 4 It is a front view of the cam of the telescopic limiting device of the present invention;

[0021] Figure 5 A top view of the cam of the telescopic limiting device of the present invention;

[0022] Figure 6 It is a front view of the upper cover of the telescopic limiting device of the present invention. DETAILED DESCRIPTION

[0023] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0024] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0025] Please refer to Figures 1 to 6 The present invention proposes a telescopic limit device, which includes at least one telescopic limit structure 10. The telescopic limit structure 10 includes a base 20, a support portion 30 and a cam 40. The support portion 30 and the cam 40 are respectively movably connected to the base 20. By rotating the cam 40, the support portion 30 can be raised to protrude from the telescopic limit device or lowered and contracted in the telescopic limit device.

[0026] In the present embodiment, the telescopic limit device is symmetrically provided with two telescopic limit structures 10. Through the cooperation of the support portion 30 and the cam 40, the support portion 30 can be raised to protrude from the telescopic limit device or lowered and retracted in the telescopic limit device by rotating the cam 40. When the telescopic limit device is installed in the external door, the height of the support portion 30 protruding from the telescopic limit device can be adjusted according to the actual installation situation, so that the limit device can be vertically installed in the external door, thereby enabling the external door lock handle to form a flush, stable and firm connection with the telescopic limit device. If the position of the limit device deviates during the use of the external door lock, it is only necessary to readjust the height of the support portion 30 protruding from the telescopic limit device to correct the position of the telescopic limit device, without having to replace the telescopic limit device, which is very convenient to use.

[0027] Furthermore, the base 20 is provided with a first receiving groove 21 and a first arc-shaped receiving groove 22 connected to the first receiving groove 21, the first receiving groove 21 is also provided with a positioning column 23 fixedly connected to the base 20, the cam 40 is provided with a first mounting hole 41, the positioning column 23 is installed in the first mounting hole 41 so that the cam 40 and the positioning column 23 are movably connected, the support part 30 is movably accommodated in the first arc-shaped receiving groove 22, and the cam 40 matches the support part 30.

[0028] In the present embodiment, the first arc-shaped receiving groove 22 matches with the supporting portion 30, and the supporting portion 30 is movably received in the first arc-shaped receiving groove 22, and one end of the supporting portion 30 protrudes out of the first arc-shaped receiving groove 22, and the first arc-shaped receiving groove 22 limits the supporting portion 30 to be able to move up and down; the positioning column 23 is installed in the first mounting hole 41 so that the cam 40 forms a movable connection with the positioning column 23, and one end of the cam 40 protrudes out of the first receiving groove 21; the cam 40 matches with the supporting portion 30, and the rotation of the cam 40 drives the supporting portion 30 to move up and down, and the cam 40 can drive the supporting portion 30 to rise and protrude from the telescopic limiting device or to descend and shrink in the telescopic limiting device.

[0029] Furthermore, a slide rail 42 is provided on the outside of the cam 40, and a card point 33 is provided at the bottom of the support part 30 at a position corresponding to the cam 40. The card point 33 is movably accommodated in the slide rail 42. When the cam 40 is rotated, the slide rail 42 rotates to drive the card point 33 to rise or fall, so that the support part 30 protrudes from the telescopic limit device or shrinks in the telescopic limit device.

[0030] In this embodiment, the card point 33 is fixedly connected to the support portion 30. When the positioning column 23 is installed in the first mounting hole 41 and the support portion 30 is movably accommodated in the first arc-shaped storage groove 22, the card point 33 is movably accommodated in the slide rail 42. The card point 33 and the slide rail 42 form a movable snap-fit ​​connection. When the cam 40 rotates, the slide rail 42 rotates to drive the card point 33 to rise or fall, so that the support portion 30 protrudes from the telescopic limit device or shrinks in the telescopic limit device.

[0031] Furthermore, a first limiting plate 24 fixedly connected to the base 20 is also provided in the first arc-shaped storage groove 22, and the support portion 30 also includes a baffle 31 fixedly connected to the support portion 30, and a limiting groove 32 is provided on the baffle 31. When the support portion 30 is movably accommodated in the first arc-shaped storage groove 22, the first limiting plate 24 passes through the limiting groove 32.

[0032] In this embodiment, when the support portion 30 is movably accommodated in the first arc-shaped receiving groove 22, the first limit plate 24 passes through the limit groove 32, and the first limit plate 24 further limits the support portion 30 so that the support portion 30 cannot rotate left and right when in the first arc-shaped receiving groove 22. When the cam 40 rotates to drive the support portion 30 to rise or fall, the support portion 30 can only move up and down in the first arc-shaped receiving groove 22; when the support portion 30 partially protrudes from the telescopic limit device, the support portion 30 is partially accommodated in the first arc-shaped receiving groove 22, and the first limit plate 24 limits the support portion 30 from rotating left and right, so that the portion of the support portion 30 protruding from the telescopic limit device is more firm and stable.

[0033] Furthermore, the telescopic limiting structure 10 also includes: an upper cover 50; a second arc-shaped receiving groove 51 is provided on the upper cover 50, the upper cover 50 is fixedly connected to the base 20, the support part 30 is accommodated in the second arc-shaped receiving groove 51, and the baffle 31 can be snap-connected with the upper cover 50.

[0034] In this embodiment, the upper cover 50 is fixedly connected to the base 20, and the support portion 30 is accommodated in the second arc-shaped receiving groove 51. The support portion 30 is flush with the second arc-shaped receiving groove 51. When the support portion 30 rises following the rotation of the cam 40, the support portion 30 protrudes out of the upper cover 50. When the support portion 30 rises and disengages from the first arc-shaped receiving groove 22, the baffle 31 can be engaged with the upper cover 50 to prevent the support portion 30 from disengaging from the limiting telescopic structure.

[0035] Furthermore, a second limiting plate 52 fixedly connected to the upper cover 50 is provided in the second arc-shaped receiving groove 51, and the upper cover 50 is fixedly connected to the base 20. The support portion 30 rises as the cam 40 rotates. When the support portion 30 is separated from the first arc-shaped receiving groove 22, the second limiting plate 52 forms a snap-fitting active connection with the baffle 31 to prevent the support portion 30 from falling off the telescopic limiting device.

[0036] In this embodiment, when the support portion 30 rises and disengages from the first arc-shaped receiving groove 22, the second limit plate 52 forms an engaging and movable connection with the baffle plate 31 to prevent the support portion 30 from falling off the telescopic limit device. At this time, the support plate is in the highest position; when the second limit plate 52 forms an engaging and movable connection with the baffle plate 31, the support portion 30 can slide back and forth in the second arc-shaped receiving groove 51.

[0037] Furthermore, the upper cover 50 is provided with a second receiving groove 53 , and the second receiving groove 53 is communicated with the second arc-shaped receiving groove 51 . When the upper cover 50 is installed on the base 20 , the cam 40 is received in the second receiving groove 53 .

[0038] In this embodiment, the cam 40 is received in the second receiving groove 53 , and the cam 40 is flush with the upper cover 50 , so that the height of the support portion 30 can be adjusted conveniently by rotating the cam 40 through an external device.

[0039] Furthermore, a second mounting hole 43 communicating with the first mounting hole 41 is provided at one end of the cam 40 away from the base 20 , and the cam 40 can be screwed through the second mounting hole 43 to rotate.

[0040] In this embodiment, the second mounting hole 43 is a standard cross hole, and the cam 40 can be screwed by engaging a screwdriver with the second mounting hole 43 to rotate the cam 40 .

[0041] Furthermore, a first limiting portion 421 communicating with the slide rail 42 is provided at one end of the slide rail 42 . When the clamping point 33 is located in the first limiting portion 421 , the support portion 30 is located at the lowest position and is limited.

[0042] In this embodiment, when the card point 33 is located in the first limiting portion 421, the support portion 30 is located at the lowest position. At this time, the support portion 30 is flush with the upper cover 50, and the cam 40 is restricted from rotating counterclockwise to further lower the position of the support portion 30.

[0043] Furthermore, a second limiting portion 422 is provided at one end of the slide rail 42 away from the first limiting portion 421 . When the clamping point 33 is located in the second limiting portion 422 , the support portion 30 is located at the highest position and is limited.

[0044] In this embodiment, when the card point 33 is located in the second limiting portion 422, the support portion 30 is located in the highest position, and at this time, the baffle plate 31 is engaged and connected with the second limiting plate 52; when the cam 40 is rotated to make the card point 33 located in the second limiting portion 422, the support portion 30 just leaves the first arc-shaped receiving groove 22, and the baffle plate 31 is engaged and connected with the second limiting plate 52, and the cam 40 is continuously rotated clockwise to make the card point 33 located at the end of the second limiting portion 422, and at this time, the card point 33 is engaged and connected with the second limiting portion 422 , further rotate the cam 40 in the clockwise direction so that the second limiting portion 422 drives the support portion 30 to slide in the second arc-shaped receiving groove 51 until the support portion 30 and the upper cover 50 form an engaging connection, and the cam 40 is restricted from rotating clockwise; when the card point 33 is located in the second limiting portion 422, the second limiting portion 422 restricts the support portion 30 from moving up and down. If it is necessary to lower the support portion 30 to be accommodated in the telescopic limiting device, the cam 40 must be rotated to make the support portion 30 lower and accommodated in the telescopic limiting device.

[0045] Of course, the present invention may have many other implementations. Based on this implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present invention.

Claims

1. A telescopic limit device, characterized in that: The telescopic limit device comprises at least one telescopic limit structure, and the telescopic limit structure comprises a base, a support portion and a cam, wherein the support portion and the cam are movably connected to the base respectively, and the support portion can be raised to protrude from the telescopic limit device or lowered to shrink in the telescopic limit device by rotating the cam; The base is provided with a first receiving groove and a first arc-shaped receiving groove communicating with the first receiving groove, the first receiving groove is further provided with a positioning column fixedly connected with the base, the cam is provided with a first mounting hole, the positioning column is installed in the first mounting hole so that the cam and the positioning column are movably connected, the support part is movably received in the first arc-shaped receiving groove, and the cam matches the support part; A slide rail is provided outside the cam, and a clamping point is provided at a position corresponding to the cam at the bottom end of the support portion, and the clamping point is movably accommodated in the slide rail. When the cam is rotated, the slide rail rotates to drive the clamping point to rise or fall, so that the support portion protrudes from the telescopic limit device or shrinks in the telescopic limit device; A first limiting plate fixedly connected to the base is further provided in the first arc-shaped receiving groove, and the supporting portion further comprises a baffle fixedly connected to the supporting portion, and a limiting groove is provided on the baffle, and when the supporting portion is movably accommodated in the first arc-shaped receiving groove, the first limiting plate passes through the limiting groove; The telescopic limiting structure further includes: an upper cover; The upper cover is provided with a second arc-shaped receiving groove, the upper cover is fixedly connected to the base, the support portion is received in the second arc-shaped receiving groove, and the baffle can be connected with the upper cover by snapping; A second limiting plate fixedly connected to the upper cover is provided in the second arc-shaped receiving groove, the upper cover is fixedly connected to the base, the support portion rises as the cam rotates, and when the support portion is separated from the first arc-shaped receiving groove, the second limiting plate forms a snap-fitting active connection with the baffle to prevent the support portion from falling off the telescopic limiting device; The upper cover is also provided with a second receiving groove, the second receiving groove is communicated with the second arc-shaped receiving groove, and when the upper cover is mounted on the base, the cam is received in the second receiving groove; A second mounting hole communicating with the first mounting hole is provided at one end of the cam away from the base, and the cam can be screwed through the second mounting hole to rotate the cam; A first limiting portion in communication with the slide rail is provided at one end of the slide rail, and when the clamping point is located in the first limiting portion, the support portion is located at the lowest position and the support portion is limited; A second limiting portion is provided at one end of the slide rail away from the first limiting portion, and when the clamping point is located in the second limiting portion, the support portion is located at the highest position and the support portion is limited; The telescopic limit device is symmetrically provided with two telescopic limit structures. Through the cooperation of the support part and the cam, the support part can be raised to protrude from the telescopic limit device or lowered and retracted in the telescopic limit device by rotating the cam. When the telescopic limit device is installed in the external door, the height of the support part protruding from the telescopic limit device can be adjusted according to the actual installation situation, so that the limit device can be vertically installed in the external door, and then the external door lock handle can form a flush, stable and firm connection with the telescopic limit device; if the position of the limit device deviates during the use of the external door lock, it is only necessary to readjust the height of the support part protruding from the telescopic limit device to correct the position of the telescopic limit device.

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