阅读说明：本技术 旋转筒及锁具 (Rotary cylinder and lock ) 是由 黄莲溪 林昱丞 于 2020-07-24 设计创作，主要内容包括：本发明公开了一种旋转筒,应用于一锁具,旋转筒用于导引锁具的一传动件。旋转筒定义一中心轴且包括一开口、一内壁、一第一引导结构、一第二引导结构以及一卡合槽。内壁与开口连通,第一引导结构形成于内壁且包括一第一曲面,第二引导结构形成于内壁且与第一引导结构相对,第二引导结构包括一第一曲面。卡合槽形成于第一引导结构及第二引导结构之间,第一引导结构的第一曲面及第二引导结构的第一曲面较卡合槽靠近开口。当组装锁具的传动件与旋转筒时,第一引导结构的第一曲面及第二引导结构的第一曲面导引传动件,使传动件进入卡合槽。(The invention discloses a rotary cylinder, which is applied to a lock and used for guiding a transmission piece of the lock. The rotary cylinder defines a central axis and includes an opening, an inner wall, a first guiding structure, a second guiding structure and a locking groove. The inner wall is communicated with the opening, the first guide structure is formed on the inner wall and comprises a first curved surface, the second guide structure is formed on the inner wall and is opposite to the first guide structure, and the second guide structure comprises a first curved surface. The clamping groove is formed between the first guide structure and the second guide structure, and the first curved surface of the first guide structure and the first curved surface of the second guide structure are closer to the opening than the clamping groove. When the transmission member and the rotary cylinder of the lock are assembled, the first curved surface of the first guide structure and the first curved surface of the second guide structure guide the transmission member so that the transmission member enters the clamping groove.)

1. A rotary cylinder for a lock, the rotary cylinder for guiding a driver of the lock, the rotary cylinder defining a central axis, the rotary cylinder comprising:

an opening;

an inner wall in communication with the opening;

a first guiding structure formed on the inner wall, the first guiding structure including a first curved surface;

the second guide structure is formed on the inner wall and is opposite to the first guide structure, and the second guide structure comprises a first curved surface; and

the clamping groove is formed between the first guide structure and the second guide structure, and the first curved surface of the first guide structure and the first curved surface of the second guide structure are closer to the opening than the clamping groove;

when the transmission member and the rotary cylinder of the lock are assembled, the first curved surface of the first guide structure and the first curved surface of the second guide structure guide the transmission member so that the transmission member enters the clamping groove.

2. The rotary drum as claimed in claim 1, wherein the transmission member includes two corner portions opposite to each other, the first curved surface of the first guide structure guides one of the two corner portions, and the first curved surface of the second guide structure guides the other of the two corner portions.

3. The spin basket of claim 1, wherein the first curved surface of the first guide structure and the first curved surface of the second guide structure are symmetrical to each other about the central axis.

4. The rotary drum as claimed in claim 1, wherein the transmission member and the rotary drum have a deviation angle when assembled, and the deviation angle is greater than 0 degree and less than 90 degrees.

5. The spin basket according to claim 1, wherein the first curved surface has a distribution length L1 perpendicular to the central axis and a distribution length L2 parallel to the central axis, which satisfies the following conditions:

0.025＜L1/L2＜2。

6. the spin basket according to claim 1, wherein the first curved surface has a distribution length L1 perpendicular to the central axis and a distribution length L2 parallel to the central axis, which satisfies the following conditions:

0.5＜L1/L2＜1。

7. the rotary drum as claimed in claim 1, wherein the first guide structure has a distribution length L3 perpendicular to the central axis, and the transmission member has a width L4, which satisfies the following conditions:

1＜L3/L4＜1.2。

8. the rotary cylinder according to claim 1, further comprising a throat section in communication with the opening, the first guide structure being disposed in the throat section, an end of the throat section adjacent to the opening being spaced from the first guide structure a minimum distance L5 parallel to the central axis that satisfies the following condition:

0.5mm＜L5＜10mm。

9. the rotary cylinder according to claim 1, further comprising a throat section in communication with the opening, the first guide structure being disposed in the throat section, an end of the throat section adjacent to the opening being spaced from the first guide structure a minimum distance L5 parallel to the central axis that satisfies the following condition:

1mm＜L5＜3mm。

10. the spin basket of claim 1, wherein the first guide structure further comprises an abutment surface, the second guide structure further comprises an abutment surface, and the abutment surface of the first guide structure and the abutment surface of the second guide structure define the detent groove.

11. The rotary drum according to claim 10, wherein when the transmission member is assembled with the rotary drum, the abutting surface of the transmission member and the first guide structure has an abutting length L6 parallel to the central axis, which satisfies the following condition:

L6≥3mm。

12. the rotary cylinder as claimed in claim 10, wherein the first guide structure further comprises a evasion surface connected to the abutting surface of the first guide structure, the evasion surface and the transmission member not interfering with each other when the transmission member and the rotary cylinder are assembled.

13. The rotary cylinder according to claim 10, wherein the first guiding structure further comprises a second curved surface, a first dodging surface, a second dodging surface and a third dodging surface, the second curved surface and the first curved surface of the first guiding structure extend in opposite directions, the first dodging surface is connected between the first curved surface and the abutting surface of the first guiding structure, the second dodging surface is connected between the second curved surface and the abutting surface of the first guiding structure, the third dodging surface is connected between the first curved surface, the second curved surface and the abutting surface of the first guiding structure, and the first dodging surface, the second dodging surface and the third dodging surface and the transmission member do not interfere with each other when the transmission member and the rotary cylinder are assembled.

14. The rotary cylinder of claim 1, wherein the first guide structure further comprises a second curved surface extending in an opposite direction from the first curved surface of the first guide structure.

15. The spin basket of claim 14, wherein the first curved surface and the second curved surface of the first guide structure are mirror symmetric.

16. A rotary cylinder for a lock, the rotary cylinder for guiding a driver of the lock, the rotary cylinder defining a central axis, the rotary cylinder comprising:

an opening;

an inner wall in communication with the opening;

the first guide structure is formed on the inner wall and comprises a first curved surface and a second curved surface, and the first curved surface and the second curved surface extend towards opposite directions; and

a clamping groove formed in the rotary cylinder, wherein the first curved surface and the second curved surface of the first guide structure are closer to the opening than the clamping groove;

when the transmission member and the rotary cylinder of the lock are assembled, the first curved surface or the second curved surface of the first guide structure guides the transmission member so that the transmission member enters the clamping groove.

17. The rotary drum as claimed in claim 16, wherein the transmission member and the rotary drum have a deviation angle when assembled, and the deviation angle is greater than 0 degree and less than 90 degrees.

18. The rotary cylinder as claimed in claim 16, wherein the first curved surface has a distribution length L1 perpendicular to the central axis and a distribution length L2 parallel to the central axis, which satisfies the following conditions:

0.025＜L1/L2＜2。

19. the rotary cylinder as claimed in claim 16, wherein the first curved surface has a distribution length L1 perpendicular to the central axis and a distribution length L2 parallel to the central axis, which satisfies the following conditions:

0.5＜L1/L2＜1。

20. the rotary drum as claimed in claim 16, wherein the first guide structure has a distribution length L3 perpendicular to the central axis, and the transmission member has a width L4, which satisfies the following conditions:

1＜L3/L4＜1.2。

21. the rotary cylinder according to claim 16, further comprising a throat section in communication with the opening, the first guide structure being disposed in the throat section, an end of the throat section adjacent to the opening being spaced from the first guide structure a minimum distance L5 parallel to the central axis that satisfies the following condition:

0.5mm＜L5＜10mm。

22. the rotary cylinder according to claim 16, further comprising a throat section in communication with the opening, the first guide structure being disposed in the throat section, an end of the throat section adjacent to the opening being spaced from the first guide structure a minimum distance L5 parallel to the central axis that satisfies the following condition:

1mm＜L5＜3mm。

23. the spin basket of claim 16, wherein the first guide structure further comprises an abutment surface, the abutment surface of the first guide structure corresponding to the catch groove.

24. The rotary drum according to claim 23, wherein when the transmission member is assembled with the rotary drum, the abutting surface of the transmission member and the first guide structure has an abutting length L6 parallel to the central axis, which satisfies the following condition:

L6≥3mm。

25. the rotary cylinder as claimed in claim 23, wherein the first guide structure further comprises a evasion surface connected to the abutment surface of the first guide structure, the evasion surface and the transmission member not interfering with each other when the transmission member and the rotary cylinder are assembled.

26. The rotary cylinder according to claim 23, wherein the first guiding structure further comprises a first dodging surface, a second dodging surface and a third dodging surface, the first dodging surface is connected between the first curved surface and the abutting surface of the first guiding structure, the second dodging surface is connected between the second curved surface and the abutting surface of the first guiding structure, the third dodging surface is connected between the first curved surface, the second curved surface and the abutting surface of the first guiding structure, and the first dodging surface, the second dodging surface and the third dodging surface do not interfere with the transmission member when the transmission member and the rotary cylinder are assembled.

27. A lock, characterized in that it comprises:

an inner grip;

a rotary cylinder as claimed in any one of claims 1 to 15 or 16 to 26, the rotary cylinder being rotatably disposed in the inner grip relative to the inner grip, one end of the rotary cylinder projecting from the inner grip;

a transmission piece, which is arranged in the clamping groove of the rotary cylinder in a penetrating way; and

a knob disposed at the end of the rotary cylinder;

when the rotating cylinder is operated to rotate relative to the inner handle, the lock is switched between a locking state and an unlocking state.

28. The lockset as recited in claim 27, further comprising:

a first end of the transmission member is arranged in the rotating cylinder, a second end of the transmission member is combined with the locking member, and when the transmission member is driven to rotate by the rotating cylinder, the locking member is switched between the locking state and the unlocking state.

Technical Field

The invention relates to the technical field of door locks, in particular to a rotating cylinder with a guide structure arranged inside to facilitate the simple installation of a transmission part and a lock comprising the rotating cylinder.

Background

A door lock generally includes an outside handle set, an inside handle set, a latch device, and a transmission member, wherein the transmission member passes through the latch device and is connected at its two ends to the outside handle set and the inside handle set, respectively. Taking a knob type lock as an example, the inner handle set comprises a rotary cylinder and a knob, the knob and the rotary cylinder are connected together, a clamping groove is formed in the rotary cylinder, the transmission member penetrates through the clamping groove to enable the rotary cylinder and the transmission member to rotate synchronously, when an operator rotates the knob of the inner handle set, the rotary cylinder can be driven to rotate together, the transmission member can be driven to rotate together, and the lock can be switched between a locking state and an unlocking state.

When assembling such a lock, a user usually combines one end of the transmission member with the outside handle set, then installs the latch device and the outside handle set together with the transmission member on the door panel, aligns the engaging groove of the rotary cylinder of the inside handle set with the other end of the transmission member, so that the transmission member can penetrate into the engaging groove, and connects the inside handle set and the outside handle set with the locking member after aligning each other.

However, the cross sections of the engaging groove and the driving member of the lock are generally disposed in a straight line, and the engaging groove and the opening of the rotating cylinder are generally axially spaced, so that the user cannot easily observe the engaging groove from the outside of the inside handle set directly, which causes difficulty in aligning the engaging groove and the driving member. When the engaging groove of the lock is configured in a cross shape and the cross section of the transmission member is configured in a straight shape, besides the problem that the engaging groove and the transmission member are not easily aligned, the defect of wrong installation direction is easily found after assembly, that is, the locking/unlocking position is not correct although the knob can be operated after the assembly is completed. In addition, the user needs to align the engaging slot with the driving member and also needs to align the inside handle set with the outside handle set.

Disclosure of Invention

An object of the present invention is to provide a rotary cylinder and a lock device to solve the above problems.

According to an embodiment of the present invention, a rotary cylinder for guiding a transmission member of a lock is provided, the rotary cylinder defining a central axis and including an opening, an inner wall, a first guiding structure, a second guiding structure and an engaging groove. The inner wall is in communication with the opening. The first guide structure is formed on the inner wall and comprises a first curved surface. The second guide structure is formed on the inner wall and is opposite to the first guide structure, and the second guide structure comprises a first curved surface. The clamping groove is formed between the first guide structure and the second guide structure, and the first curved surface of the first guide structure and the first curved surface of the second guide structure are closer to the opening than the clamping groove. When the transmission member and the rotary cylinder of the lock are assembled, the first curved surface of the first guide structure and the first curved surface of the second guide structure guide the transmission member so that the transmission member enters the clamping groove.

According to another embodiment of the present invention, a rotary cylinder for guiding a transmission member of a lock is provided, the rotary cylinder defining a central axis and including an opening, an inner wall, a first guiding structure and an engaging groove. The inner wall is in communication with the opening. The first guide structure is formed on the inner wall and comprises a first curved surface and a second curved surface, and the first curved surface and the second curved surface extend in opposite directions. The clamping groove is formed in the rotary cylinder, and the first curved surface and the second curved surface of the first guide structure are closer to the opening than the clamping groove. When the transmission member and the rotary cylinder of the lock are assembled, the first curved surface or the second curved surface of the first guide structure guides the transmission member so that the transmission member enters the clamping groove.

According to another embodiment of the present invention, a lock device includes an inner handle, a rotary cylinder, a transmission member and a knob. The rotary cylinder is arranged in the inner side grip in a mode of rotating relative to the inner side grip, one end of the rotary cylinder protrudes out of the inner side grip, the transmission piece penetrates through the clamping groove of the rotary cylinder, and the knob is arranged at the end of the rotary cylinder. When the rotary cylinder is operated to rotate relative to the inner handle, the lock is switched between a locking state and an unlocking state.

Compared with the prior art, the lock is provided with the first guide structure and/or the second guide structure in the rotary cylinder, when the transmission part and the rotary cylinder are assembled, the transmission part can be guided by the first curved surface of the first guide structure and the first curved surface of the second guide structure together, or the transmission part can be guided by the first curved surface or the second curved surface of the first guide structure/the second guide structure, so that the deviation angle between the transmission part and the rotary cylinder can be eliminated, the transmission part can smoothly enter the clamping groove, a user does not need to accurately align the clamping groove of the rotary cylinder with the transmission part, and the assembling difficulty can be greatly reduced.

Drawings

Fig. 1 is a perspective view of a spin basket according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of half of the spin basket of fig. 1.

Fig. 3 is a schematic cross-sectional view of the spin basket of fig. 1.

Fig. 4 is a schematic plan view of the spin basket of fig. 1.

Fig. 5 is a schematic view of the rotary drum and a transmission member of fig. 1.

FIG. 6 is a schematic cross-sectional view of the rotating drum and the transmission member of FIG. 5 taken along the cutting line A-A.

FIG. 7 is a schematic view of the transmission member and the rotary drum of FIG. 5.

FIG. 8 is an assembly view of the driving member and the rotary drum of FIG. 7 from another perspective.

FIG. 9 is a further assembled view of the driving member and the rotary cylinder of FIG. 7.

FIG. 10 is a schematic view of a combination of a rotary drum and a transmission member according to another embodiment of the present invention.

FIG. 11 is a perspective view of a lock according to an embodiment of the present invention.

FIG. 12 is a cross-sectional view of the lock of FIG. 11 taken along section line B-B.

Figure 13 is an exploded view of the latch of figure 11.

Description of the symbols:

Detailed Description

The foregoing and other technical and other features and advantages of the invention will be apparent from the following detailed description of preferred embodiments, which proceeds with reference to the accompanying drawings. The following examples refer to directional terms such as: up, down, left, right, front or rear, etc., are referred to only in the direction of the attached drawings. Accordingly, the directional terminology is used for purposes of illustration and is in no way limiting. In addition, in the following embodiments, the same or similar elements will be given the same or similar reference numerals.

Referring to fig. 1 to 4, fig. 2 is a schematic view of the inner structure of the rotary drum 120, and only a half-edge structure of the rotary drum 120 is shown. The present invention provides a rotary cylinder 120, the rotary cylinder 120 defines a central axis O, and the rotary cylinder includes an opening 121, an inner wall 122, a first guiding structure 123, a second guiding structure 124, and a locking groove 125. The inner wall 122 communicates with the opening 121. The first guiding structure 123 is formed on the inner wall 122, and the first guiding structure 123 includes a first curved surface 123 a. The second guiding structure 124 is formed on the inner wall 122 and opposite to the first guiding structure 123, and the second guiding structure 124 includes a first curved surface 124 a. The engaging groove 125 is formed between the first guiding structure 123 and the second guiding structure 124, and the first curved surface 123a of the first guiding structure 123 and the first curved surface 124a of the second guiding structure 124 are closer to the opening 121 than the engaging groove 125.

The rotary cylinder 120 can be applied to a lock 10 (see fig. 11 to 13), the rotary cylinder 120 is used for guiding a transmission member 500 (see fig. 12 and 13) of the lock 10, the transmission member 500 is guided by the rotary cylinder 120 and then passes through the engaging groove 125, as shown in fig. 5 and 6, when the transmission member 500 and the rotary cylinder 120 are in an assembled state, the transmission member 500 passes through the engaging groove 125.

Referring to fig. 7 to 9, when the transmission member 500 and the rotary cylinder 120 are assembled, one end of the transmission member 500 is inserted into the engaging groove 125 of the rotary cylinder 120, and when the transmission member 500 enters the rotary cylinder 120 from the opening 121 and is not aligned with the engaging groove 125, as shown in fig. 7 and 8, a deviation angle a1 is formed between the transmission member 500 and the rotary cylinder 120, so that the transmission member 500 contacts the first guiding structure 123 and the second guiding structure 124, fig. 7 and 8 illustrate that the transmission member 500 contacts the first curved surface 123a of the first guiding structure 123 and the first curved surface 124a of the second guiding structure 124, and the first curved surface 123a of the first guiding structure 123 and the first curved surface 124a of the second guiding structure 124 guide the transmission member 500 together to rotate the transmission member 500 along the first curved surfaces 123a, 124a to gradually reduce the deviation angle a1, further, the driving member 500 is aligned with the engaging groove 125, and as shown in fig. 9, the deviation angle a1 is 0 degree, so that the driving member 500 can enter the engaging groove 125. In other words, when the transmission member 500 and the rotary cylinder 120 of the lock 10 are assembled, the first curved surface 123a of the first guiding structure 123 and the first curved surface 124a of the second guiding structure 124 guide the transmission member 500, so that the transmission member 500 enters the engaging groove 125. Therefore, when the user assembles the rotating cylinder 120 and the transmission member 500, the user does not need to precisely align the engaging groove 125 of the rotating cylinder 120 with the transmission member 500, and the assembly difficulty can be greatly reduced.

In the present embodiment, the second guide structure 124 and the first guide structure 123 are symmetrical to each other with the central axis O as the center, so the structural details of the first guide structure 123 and the second guide structure 124 will be described by taking the first guide structure 123 as an example, and the component details of the second guide structure 124 can refer to the component with the same name as the first guide structure 123.

In detail, as shown in fig. 2 to 4, the rotary drum 120 may further include a mouth section 127 communicating with the opening 121, the first guide structure 123 and the second guide structure 124 are disposed on the mouth section 127, and an inner diameter R2 of the mouth section 127 is smaller than an inner diameter R1 of the opening 121. The first guiding structure 123 may further include a second curved surface 123b, the second curved surface 123b and the first curved surface 123a of the first guiding structure 123 may be connected to each other, and the second curved surface 123b and the first curved surface 123a of the first guiding structure 123 may extend in opposite directions. The second guiding structure 124 may further include a second curved surface 124b, the second curved surface 124b and the first curved surface 124a of the second guiding structure 124 may be connected to each other, and the second curved surface 124b and the second curved surface 124a of the second guiding structure 124 may extend in opposite directions. Therefore, when the transmission member 500 and the rotary drum 120 are assembled, the deviation angle a1 (as shown in fig. 7) is formed in the clockwise direction or the deviation angle a (not shown) is formed in the counterclockwise direction, both the first curved surfaces 123a and 124a and the second curved surfaces 123b and 124b can guide the transmission member 500 to align with the engaging groove 125. The first curved surface 123a and the second curved surface 123b of the first guiding structure 123 may be mirror symmetric, and the first curved surface 124a and the second curved surface 124b of the second guiding structure 124 may be mirror symmetric. Specifically, the first curved surface 123a and the second curved surface 123b of the first guide structure 123 are mirror-symmetrical with respect to the plane S as a symmetrical plane, and the first curved surface 124a and the second curved surface 124b of the second guide structure 124 are mirror-symmetrical with respect to the plane S as a symmetrical plane. Thereby, the structural configuration of the rotary drum 120 is simplified, and the guide provided by the rotary drum 120 to the transmission member 500 is more uniform.

As shown in fig. 4, the first curved surface 123a of the first guide structure 123 and the first curved surface 124a of the second guide structure 124 may be symmetrical to each other centering on the central axis O, and the second curved surface 123b of the first guide structure 123 and the second curved surface 124b of the second guide structure 124 may be symmetrical to each other centering on the central axis O. Thereby, the guidance provided by the first guiding structure 123 and the second guiding structure 124 to the transmission member 500 is more even.

As shown in fig. 2 to 4, the first guiding structure 123 may further include an abutting surface 123c, and the second guiding structure 124 may further include an abutting surface 124c, where the abutting surface 123c of the first guiding structure 123 and the abutting surface 124c of the second guiding structure 124 define the engaging groove 125. In other words, the abutting surface 123c of the first guiding structure 123 corresponds to the engaging groove 125, and the abutting surface 124c of the second guiding structure 124 corresponds to the engaging groove 125. The first curved surface 123a is closer to the opening 121 than the abutting surface 123c, and the first curved surface 124a is closer to the opening 121 than the abutting surface 124c, so that the engaging groove 125 is farther from the opening 121 than the first curved surface 123a of the first guiding structure 123 and the first curved surface 124a of the second guiding structure 124.

The first guide structure 123 may further include at least one evasion surface (123 d-123 f), the evasion surface (123 d-123 f) being connected with the abutment surface 123c of the first guide structure 123, the evasion surface (123 d-123 f) and the transmission member 500 not interfering with each other when the transmission member 500 and the rotary cylinder 120 are assembled. Specifically, the first guiding structure 123 includes three evasive surfaces, namely a first evasive surface 123d, a second evasive surface 123e and a third evasive surface 123f, wherein the first evasive surface 123d is connected between the first curved surface 123a and the abutting surface 123c, the second evasive surface 123e is connected between the second curved surface 123b and the abutting surface 123c, and the third evasive surface 123f is connected between the first curved surface 123a, the second curved surface 123b and the abutting surface 123 c. The abutting surface 123c and the first curved surface 123a have a spacing distance D1 along the central axis O, that is, the first curved surface 123a is not directly connected to the abutting surface 123c, but is connected to the abutting surface 123c through the first dodging surface 123D and the third dodging surface 123 f. The abutting surface 123c and the second curved surface 123b have a spacing distance D1 along the central axis O, that is, the second curved surface 123b is not directly connected to the abutting surface 123c, but is connected to the abutting surface 123c through the second dodging surface 123e and the third dodging surface 123 f. When the transmission member 500 and the rotary cylinder 120 are assembled, the first, second and third evasive surfaces 123d, 123e and 123f of the first guide structure 123 and the transmission member 500 do not interfere with each other.

Similarly, the second guiding structure 124 may further include at least one evasion surface (only 124f is shown), the evasion surface (only 124f is shown) is connected to the abutting surface 124c of the second guiding structure 124, and the evasion surface (only 124f is shown) and the transmission member 500 do not interfere with each other when the transmission member 500 and the rotary drum 120 are assembled. In this embodiment, the second guiding structure 124 includes three evasive surfaces, which are a first evasive surface, a second evasive surface and a third evasive surface 124f, respectively, the first evasive surface is connected between the first curved surface 124a and the abutting surface 124c, the second evasive surface is connected between the second curved surface 124b and the abutting surface 124c, and the third evasive surface 124f is connected between the first curved surface 124a, the second curved surface 124b and the abutting surface 124 c. The abutting surface 124c and the first curved surface 124a have a spacing distance along the central axis O, that is, the first curved surface 124a is not directly connected to the abutting surface 124c, but is connected to the abutting surface 124c through the first and third evasive surfaces 124 f. The abutting surface 124c and the second curved surface 124b have a spacing distance along the central axis O, that is, the second curved surface 124b is not directly connected to the abutting surface 124c, but is connected to the abutting surface 124c through the second dodging surface and the third dodging surface 124 f. When the transmission member 500 and the rotary cylinder 120 are assembled, the first, second and third evasive surfaces 124f of the second guide structure 124 and the transmission member 500 do not interfere with each other. The first guiding structure 123 and the second guiding structure 124 are disposed with evasive surfaces, which is beneficial to improve the smoothness of guiding the transmission member 500 to the engaging groove 125.

Referring to fig. 7, the cross-section of the transmission member 500 may be rectangular, and may include corner portions 511, 512, 513, 514, where the corner portion 511 is opposite to the corner portion 513, and the corner portion 512 is opposite to the corner portion 514, and has a deviation angle a1 in a clockwise direction (as shown in fig. 7) when the transmission member 500 and the rotary drum 120 are assembled, the first curved surface 123a of the first guide structure 123 guides the corner portion 511, and the first curved surface 124a of the second guide structure 124 guides the corner portion 513, or has a deviation angle in a counterclockwise direction (not shown) when the transmission member 500 and the rotary drum 120 are assembled, the second curved surface 123b of the first guide structure 123 guides the corner portion 514, and the second curved surface 124b of the second guide structure 124 guides the corner portion 512. In other words, the transmission member 500 may include two opposite corners (511 and 513, or 512 and 514), the first curved surface 123a of the first guide structure 123 guides one of the two corners, and the first curved surface 124a of the second guide structure 124 guides the other of the two corners. In other embodiments, the cross-section of the transmission member 500 may have other shapes, such as an oblong shape (e.g., the long side of the cross-section of the transmission member 500 changes from a straight line to an arc line in fig. 9), and the number of the guiding structures may be adjusted accordingly according to the shape of the transmission member 500.

Referring to fig. 7, when the transmission member 500 and the rotary drum 120 are assembled to have a deviation angle a1, and the deviation angle a1 is greater than 0 degree and less than 90 degrees, the transmission member 500 can be guided by the first guiding structure 123 and the second guiding structure 124 together, so that the transmission member 500 is aligned with the engaging groove 125. The deviation angle a1 may be defined as an angle between a longitudinal extension direction X1 passing through a center point of the engaging groove 125 and a longitudinal extension direction X2 passing through a center point of the transmission member 500. More specifically, when the deviation angle a1 is 0 degrees, it indicates that the driving member 500 is aligned with the engaging groove 125, and can directly enter the engaging groove 125 without being guided. When the deviation angle a1 is 90 degrees, the driver 500 is in contact with the boundary 123g connecting the first curved surface 123a and the second curved surface 123b and the boundary 124g connecting the first curved surface 124a and the second curved surface 124b, and the boundaries 123g and 124g are located at the edge positions and cannot exert the guiding effect. However, the user can enter a range in which the user can be guided by only slightly deflecting the driving member 500 to be out of the prism position. In other words, when the deviation angle a1 falls within a range greater than 0 degrees and less than 90 degrees, the driving member 500 can be guided into the engaging groove 125. Therefore, the present invention has the advantage of wide guiding range, and can greatly reduce the difficulty of assembling the transmission member 500 and the rotary cylinder 120.

Referring to fig. 3, the distribution length of the first curved surface 123a perpendicular to the central axis O is L1, and the distribution length of the first curved surface 123a parallel to the central axis O is L2, which can satisfy the following conditions: 0.025 < L1/L2 < 2. Therefore, the smoothness of guiding the transmission member 500 to the engaging groove 125 is improved. Preferably, it can satisfy the following conditions: L1/L2 is more than 0.5 and less than 1. Further, L1 may satisfy the following condition: 1mm < L1 < 10mm, preferably L1 satisfies the following conditions: l1 is more than 2mm and less than 5 mm. The L1 can be calculated as the distance from the starting point P1 of the first curved surface 123a to the end point P2 of the first curved surface 123a perpendicular to the central axis O, and the L2 can be calculated as the distance from the starting point P1 of the first curved surface 123a to the end point P2 of the first curved surface 123a parallel to the central axis O.

Referring to fig. 3 and 6, the first guiding structure 123 has a distribution length L3 perpendicular to the central axis O and a width L4 of the transmission member 500, which satisfies the following conditions: L3/L4 is more than 1 and less than 1.2. Therefore, the success rate of guiding the transmission member 500 is improved. Referring to fig. 7 and 8, when the transmission member 500 and the rotary drum 120 are assembled to have a deviation angle a1, the central axis R of the transmission member 500 and the central axis O of the rotary drum 120 may not coincide (also referred to as eccentricity). Referring to fig. 8 and 9, when the transmission member 500 moves from the point P3 on the first curved surface 123a to the point P4 on the first curved surface 123a, the transmission member 500 is guided by the first curved surfaces 123a and 124b to gradually reduce the deviation angle a1 and to gradually coincide (also called concentric) the central axis R of the transmission member 500 with the central axis O of the rotary cylinder 120. When L3/L4 is too large, it may cause the driving member 500 to be eccentric when inserted into the rotary drum 120, which is disadvantageous in that the driving member 500 is concentric with the rotary drum 120 during the guiding process.

Referring to fig. 3, the minimum distance between the end 128 of the beam-opening section 127 adjacent to the opening 121 and the first guiding structure 123 parallel to the central axis O is L5, which satisfies the following condition: l5 is more than 0.5mm and less than 10 mm. Thus, the transmission member 500 is prevented from being stuck once entering the rotary cylinder 120. Preferably, it can satisfy the following conditions: l5 is more than 1mm and less than 3 mm.

Referring to fig. 5, when the transmission member 500 and the rotary drum 120 are assembled, the abutting length of the transmission member 500 and the abutting surface 123c parallel to the central axis O is L6, which satisfies the following conditions: l6 is more than or equal to 3 mm. Therefore, the driving member 500 and the rotary cylinder 120 have a sufficient abutting length therebetween, so that the driving member 500 and the rotary cylinder 120 can rotate synchronously. In the present embodiment, the transmission member 500 passes through the engaging groove 125 to approach the end 126 of the rotating cylinder 120 opposite to the opening 121, and therefore, in the present embodiment, the size of L6 is equal to the length of the abutting surface 123c parallel to the central axis O, however, the present invention is not limited thereto, and in other embodiments, the transmission member 500 may be configured with a shorter length without passing through the engaging groove 125, as shown in fig. 10.

Referring to fig. 6, the thickness L7 of the transmission member 500 corresponds to the size of the engaging groove 125, so that the transmission member 500 can be engaged in the engaging groove 125, thereby enabling the transmission member 500 to rotate synchronously with the rotary drum 120.

In this embodiment, the rotary drum 120 is provided with a first guiding structure 123 and a second guiding structure 124, and guides the transmission member 500 by the first curved surface 123a of the first guiding structure 123 and the first curved surface 124a of the second guiding structure 124. However, in other embodiments, the rotary cylinder 120 may be provided with only the first guide structure 123 or the second guide structure 124. For example, when the rotary drum 120 is provided with only the first guiding structure 123, referring to fig. 2 and 3, the rotary drum 120 defines a central axis O, and the rotary drum 120 includes an opening 121, an inner wall 122, a first guiding structure 123 and an engaging groove 125. The inner wall 122 communicates with the opening 121. The first guiding structure 123 is formed on the inner wall 122, and the first guiding structure 123 includes a first curved surface 123a and a second curved surface 123b, and the first curved surface 123a and the second curved surface 123b extend in opposite directions. The engaging groove 125 is formed in the rotary cylinder 120, and the first curved surface 123a and the second curved surface 123b of the first guide structure 123 are closer to the opening 121 than the engaging groove 125. When the transmission member 500 and the rotary cylinder 120 of the lock 10 are assembled, the first curved surface 123a or the second curved surface 123b of the first guiding structure 123 guides the transmission member 500, so that the transmission member 500 enters the engaging groove 125. Specifically, when the transmission member 500 and the rotary drum 120 are assembled together with the deviation angle a1, and the deviation angle a1 is greater than 0 degree and less than 90 degrees, the transmission member 500 contacts one of the first curved surface 123a and the second curved surface 123b (as described above with reference to fig. 7), so that the transmission member 500 is guided by the one of the first curved surface 123a and the second curved surface 123b to enter the engaging groove 125. When the rotary drum 120 is only provided with the first guide structure 123 or the second guide structure 124, other details of the rotary drum 120 may be the same as the rotary drum 120 provided with the first guide structure 123 and the second guide structure 124 at the same time without contradiction, and are not described herein again.

Referring to fig. 11 to 13, the present invention further provides a lock 10, the lock 10 is used for being mounted on a door (not shown), the lock 10 includes an inside handle set 100, an outside handle set 200, a latch device 300, a tubular member 400 and a transmission member 500. The inside handle assembly 100 is disposed on one side of the door panel, the outside handle assembly 200 is disposed on the other side of the door panel, and the latch device 300 is disposed between the inside handle assembly 100 and the outside handle assembly 200, and is fixed to the door panel by two locking members 320 correspondingly locked into two locking holes 330. The tubular member 400 passes through the latch device 300 and is connected at both ends thereof to the inside handle set 100 and the outside handle set 200, respectively. Similarly, when the inner grip 130 of the inner handle set 100 is rotated, the inner grip 130 can drive the tubular member 400 and the outer grip 220 of the outer handle set 200 to rotate together, and the tongue 310 of the latch device 300 can be driven to extend and retract by rotating the tubular member 400, and when the inner grip 130 of the inner handle set 100 is rotated, the inner grip 130 can drive the tubular member 400 and the outer grip 220 of the outer handle set 200 to rotate together, and the tongue 310 of the latch device 300 can be driven to extend and retract by rotating the tubular member 400. The transmission member 500 is rotatably disposed in the tubular member 400, and is connected to the inside handle set 100 and the outside handle set 200 by a first end 510 and a second end 520 thereof, respectively.

The inside handle assembly 100 includes a knob 110, a rotating cylinder 120, an inside handle 130 and a set of disc structure 140, the set of disc structure 140 is fixed on the door panel, the inside handle 130 is connected with the set of disc structure 140 in a manner of rotating with respect to the set of disc structure 140, the rotating cylinder 120 is arranged in the inside handle 130 in a manner of rotating with respect to the inside handle 130, and one end 126 of the rotating cylinder 120 protrudes from the inside handle 130, wherein the end 126 of the rotating cylinder 120 protrudes from the inside handle 130 through a through hole 131 of the inside handle 130, and the knob 110 is arranged at the end 126 of the rotating cylinder 120. In other embodiments, the knob 110 may be integrally formed with the rotary cylinder 120, or the end 126 of the rotary cylinder 120 may be directly formed in the shape of the knob 110, and the knob 110 may be omitted.

The outside handle assembly 200 includes a locking member 210, an outside handle 220 and a sleeve structure 230, the sleeve structure 230 is fixedly disposed on the door panel, the outside handle 220 is connected to the sleeve structure 230 in a rotatable manner relative to the sleeve structure 230, and the locking member 210 is disposed in the outside handle 220 in a rotatable manner relative to the outside handle 220.

The first end 510 of the transmission member 500 is disposed in the rotary cylinder 120, and the second end 520 of the transmission member 500 is coupled to the locking member 210. When the rotary cylinder 120 is operated to rotate relative to the inner handle 130, for example, a user rotates the knob 110 to rotate the rotary cylinder 120, the transmission member 500 is driven to rotate by the rotary cylinder 120, so that the locking member 210 is switched between a locked state and an unlocked state, i.e., when the rotary cylinder 120 is operated to rotate relative to the inner handle 130, the lock 10 is switched between the locked state and the unlocked state.

When assembling the lock 10, the second end 520 of the transmission member 500 is combined with the outside handle assembly 200, the latch device 300 and the outside handle assembly 200 are then mounted to the door panel together with the transmission member 500, the rotary cylinder 120 of the inside handle assembly 100 is aligned with the first end 510 of the transmission member 500, and the inside handle assembly 100 and the outside handle assembly 200 are aligned with each other, for example, the two cylindrical structures 141 of the inside handle assembly 100 are aligned with the two screw holes 231 of the outside handle assembly 200, and then the inside handle assembly 100 and the outside handle assembly 200 are fixedly connected by a locking element (not shown) passing through the hole 142 and then locking into the screw holes 231. In the case that the rotating cylinder 120 is provided with the first guiding structure 123 and the second guiding structure 124 at the same time, when the rotating cylinder 120 of the inside handle set 100 is aligned with the first end 510 of the transmission member 500, only the first end 510 of the transmission member 500 needs to be aligned with the opening 121 without being aligned with the engaging groove 125, and the transmission member 500 can be guided by the first curved surface 123a of the first guiding structure 123 and the first curved surface 124a of the second guiding structure 124 together, so that the transmission member 500 can smoothly enter the engaging groove 125. When the rotating cylinder 120 is only provided with the first guiding structure 123 and the first guiding structure 123 includes the first curved surface 123a and the second curved surface 123b, when the rotating cylinder 120 of the inside handle set 100 is aligned with the first end 510 of the transmission member 500, the first end 510 of the transmission member 500 is only aligned with the opening 121 and does not need to be aligned with the engaging groove 125, so that the transmission member 500 can smoothly enter the engaging groove 125 by the guidance of the first curved surface 123a or the second curved surface 123b of the first guiding structure 123.

Compared with the prior art, the lock is provided with the first guide structure and/or the second guide structure in the rotary cylinder, when the transmission part and the rotary cylinder are assembled, the transmission part can be guided by the first curved surface of the first guide structure and the first curved surface of the second guide structure together, or the transmission part can be guided by the first curved surface or the second curved surface of the first guide structure/the second guide structure, so that the deviation angle between the transmission part and the rotary cylinder can be eliminated, the transmission part can smoothly enter the clamping groove, a user does not need to accurately align the clamping groove of the rotary cylinder with the transmission part, and the assembling difficulty can be greatly reduced.

The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.