Split ring structure of door lock

Abstract

The utility model relates to a door lock split ring structure which comprises a split ring, a split lining and a dial wheel, a through hole is formed in the middle of the split ring, the dial wheel is connected with the split lining in a sleeved mode, the split lining is arranged in the split ring in a sleeved mode to be fixedly assembled, and one end of the dial wheel penetrates out of the through hole and forms a handle connecting end after the dial wheel is arranged in the split lining in a sleeved mode. The other end, opposite to the handle connecting end, of the shifting wheel is provided with a connecting cavity matched with the square steel in shape, and at least one set of limiting devices which can abut against the square steel inserted into the connecting cavity in the circumferential direction so as to limit circumferential movement of the square steel are arranged on the side, on the connecting cavity, of the shifting wheel. Machining of the two ends of square steel is omitted, machining cost is saved, assembling is more convenient, and assembling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of indoor door locks, in particular to a door lock split ring structure. Background Art

[0002] The split handle lock is usually composed of a handle ring and a handle. The handle ring on the market, or called a split ring, is a split handle quick-install structure disclosed in the prior art, such as patent number: CN219993386U, which includes a handle, a split ring, a dial, a split liner, a torsion spring and a retaining spring. The dial is sleeved with the split liner, the torsion spring is arranged between the dial and the split liner, and the dial drives the torsion spring to deform elastically through the square shaft of the lock body. The dial and the split liner are also fixed by a retaining spring. The handle passes through the split ring and the dial for linkage assembly, and the split liner is sleeved into the split ring for fixed assembly.

[0003] When the thumbwheel of the above structure is connected to the square steel of the lock body, a top screw hole needs to be opened on the handle, and the square steel inserted into the thumbwheel is counteracted by the top screw, and a top screw limit groove matching with the top screw needs to be opened on the square steel. Since the split handle locks appear in pairs, top screw limit grooves need to be opened at both ends of the square steel and match with the top screws on the inner and outer handles for limiting, so as to avoid the lock connected to the square steel from sagging due to the displacement of the square steel. However, this structure is relatively cumbersome, and the square steel needs to undergo multiple processing steps and has high cost. In addition, various positioning is required when it is assembled on the door body, resulting in low installation efficiency. It is necessary to improve this. Summary of the invention

[0004] The technical problem to be solved by the present invention is to address the deficiencies of the above-mentioned prior art.

[0005] A door lock split ring structure is provided which does not require processing of the other steel and is easy to install.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a door lock split ring structure, comprising a split ring, a split inner lining, and a thumb wheel, a through hole being provided in the middle of the split ring, the thumb wheel being sleeved with the split inner lining, the split inner lining being sleeved into the split ring and fixedly assembled, characterized in that: after the thumb wheel is sleeved into the split inner lining, one end of the thumb wheel passes through the through hole and forms a handle connecting end, the other end of the thumb wheel opposite to the handle connecting end is provided with a connecting cavity adapted to the shape of the square steel, and the thumb wheel is provided with at least one set of limit devices on one side of the connecting cavity, which can circumferentially resist the square steel inserted into the connecting cavity to limit the circumferential movement of the square steel.

[0007] By adopting the above technical scheme, in the prior art, a screw hole is provided on the handle, and a top screw is inserted into the part to abut against the square steel inserted into the dial wheel. Of course, a limiting groove matching with the top screw needs to be provided on the square steel, and the groove needs to be aligned with the top screw part connected to the handle during installation to prevent the lock connected to the square steel from sagging. This arrangement requires corresponding processing of the square steel, the dial wheel, and the handle, respectively, and there are many processing steps, resulting in high production costs. In addition, during installation, the parts of the three that limit the square steel need to be aligned one by one, which affects the assembly efficiency. The utility model directly aligns the side of the connecting cavity on the other side of the dial wheel opposite to the connecting end of the handle. At least one set of limit devices directly counteracting the square steel is provided to limit the circumferential displacement of the square steel. This approach not only saves the need for multiple processing steps on the square steel, but also eliminates the need to provide a top screw connection hole on the handle. During assembly, the square steel can be directly inserted into the connection cavity to directly achieve the limit. Therefore, the technical solution provided by the utility model can directly use a complete square steel to install the split handle lock assembly, and there is no need to provide a limit groove on the square steel that matches the top screw holes provided on the inner and outer handles. The processing is more convenient, and during assembly, there is no need to align the dial wheel, square steel, and the handle with the part where the square steel is limited, which significantly improves the assembly efficiency.

[0008] The above-mentioned door lock split ring structure can be further configured as follows: the limiting device includes a limiting bead, the connecting cavity is circumferentially provided with a limiting bead installation cavity connected to the connecting cavity, the limiting bead is installed in the limiting bead installation cavity and one end is exposed in the connecting cavity, and the limiting bead installation cavity is provided with a blocking part at one end close to the connecting cavity to prevent the limiting bead from escaping from the limiting bead installation cavity.

[0009] By adopting the above technical solution, through the design of the limiting bead installation cavity and the limiting bead, one side of the square steel contacts the limiting bead when the square steel is inserted into the connecting cavity, and the limiting bead always resists against one side of the square steel, thereby preventing the square steel from circumferentially displacing in the connecting cavity and causing the lock to sag. Of course, multiple limiting bead installation cavities and limiting beads can be arranged at different circumferential positions of the connecting cavity to further enhance the limiting effect. The setting of the blocking part can prevent the limiting bead from detaching from the limiting bead installation cavity when the square steel is not installed on the dial wheel.

[0010] The above-mentioned door lock split ring structure can be further configured as follows: an elastic retaining component with one end always abutting against the limiting bead is provided in the connecting cavity, and the limiting bead is exposed in the connecting cavity through one end of the elastic retaining component.

[0011] By adopting the above technical solution, an elastic retaining component is set to ensure that the limit bead always applies a force on the circumference of the square steel after it is against the square steel. When the size of the connecting cavity is within the tolerance range, the elastic retaining component can be compressed to adapt to the square steel, thereby improving versatility.

[0012] The above-mentioned door lock split ring structure can be further configured as follows: the elastic retaining component includes a spring, one end of the spring abuts against one end of the limiting bead installation cavity away from the connecting cavity, and the other end abuts against the limiting bead.

[0013] By adopting the above technical solution, a return spring is installed in the limiting bead installation cavity, one end of the return spring abuts against the bottom of the limiting bead installation cavity and the other end abuts against the limiting bead, thereby causing one end of the limiting bead to be exposed in the connecting cavity, thereby improving versatility.

[0014] The above-mentioned door lock split ring structure can be further configured as follows: the limiting bead installation cavity is opened at one end away from the connecting cavity, the limiting bead installation cavity is provided with an internal thread at the end facing the opening, and the limiting bead installation cavity is connected to the base through the internal thread.

[0015] By adopting the above technical solution, by opening one end of the limit bead installation cavity away from the connecting cavity and setting an internal thread, and connecting the base through the internal thread, the base can adjust the straight-line distance from itself to the connecting cavity in the limit bead installation cavity, thereby adjusting the length of the end of the limit bead exposed in the connecting cavity. Due to the presence of the base, when a return spring is set in the limit bead installation cavity, the force applied to the limit bead by the spring can be adjusted by adjusting the straight-line distance from the base to the connecting cavity, thereby adjusting the tightness between the limit bead and the square steel.

[0016] The above-mentioned door lock split ring structure can be further configured as follows: the base is a top screw.

[0017] By adopting the above technical solution, by setting the base as a top screw, it is not only convenient for processing but also easy to adjust because the top screw has an adjustment hole that matches the wrench. Of course, the base is not limited to the top screw, and other general fasteners with external threads and an adjustment port at one end can be used as the base.

[0018] The above-mentioned door lock split ring structure can be further configured as follows: the limiting beads are steel balls.

[0019] By adopting the above technical solution, the limit ball is set as a steel ball, which is easy to purchase and the cooperation between the steel ball and the return spring is easy to assemble.

[0020] The above-mentioned door lock split ring structure can be further configured as follows: a plurality of positioning columns are circumferentially arranged at one end of the split ring, and the split inner liner is provided with positioning holes at positions corresponding to the positioning columns, and the split inner liner is sleeved on the positioning columns of the split ring through the positioning holes.

[0021] By adopting the above technical solution, a plurality of positioning columns are arranged on the split ring, generally at least two positioning columns are arranged, and the split inner liner is sleeved on the split ring through the cooperation of the positioning columns with the positioning holes of the split inner liner to play a fixing role.

[0022] The beneficial effects of the utility model are as follows: by arranging the limit device on the thumbwheel, it is unnecessary to process the two ends of the square steel, thus saving processing costs, making assembly more convenient, and improving assembly efficiency.

[0023] The utility model is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0025] Figure 2 It is a schematic diagram of the exploded structure of an embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the exploded structure of the thumbwheel of an embodiment of the utility model;

[0027] Figure 4 This is a top view schematic diagram of the embodiment of the utility model after the square steel is installed;

[0028] Figure 5 for Figure 4 Schematic diagram of the AA section in FIG.

[0029] Figure 6 A three-dimensional diagram of a thumbwheel according to an embodiment of the present utility model Figure 1 ;

[0030] Figure 7 A three-dimensional diagram of a thumbwheel according to an embodiment of the present utility model Figure 2 ; DETAILED DESCRIPTION

[0031] like Figures 1 to 7 A door lock split ring structure shown includes a split ring 1, a split inner lining 2, and a thumbwheel 3. A through hole 11 is provided in the middle of the split ring 1. The thumbwheel 3 is sleeved with the split inner lining 2. The split inner lining 2 is inserted into the split ring 1 and fixedly assembled. After the thumbwheel 3 is inserted into the split inner lining 2, one end of the thumbwheel 3 passes through the through hole 11 and forms a handle connecting end 31. The handle connecting end 31 is preferably square and can be smoothly driven by the handle after being connected. The other end of the thumbwheel 3 opposite to the handle connecting end 31 is provided with a connecting cavity 32 adapted to the shape of the external square steel 7. The thumbwheel 3 is provided with at least one set of limiting devices on one side of the connecting cavity 32, which can abut against the square steel inserted into the connecting cavity 32 in the circumferential direction to limit the circumferential movement of the square steel.

[0032] By adopting the above technical scheme, in the prior art, a screw hole is provided on the handle, and a top screw is inserted into the part to abut against the square steel inserted into the dial wheel. Of course, a limiting groove matching with the top screw needs to be provided on the square steel, and the groove needs to be aligned with the top screw part connected to the handle during installation to prevent the lock connected to the square steel from sagging. This arrangement requires corresponding processing of the square steel, the dial wheel, and the handle, respectively, and there are many processing steps, resulting in high production costs. In addition, during installation, the parts of the three that limit the square steel need to be aligned one by one, which affects the assembly efficiency. The utility model directly aligns the side of the connecting cavity on the other side of the dial wheel opposite to the connecting end of the handle. At least one set of limiting devices directly counteracting the square steel is provided to limit the circumferential displacement of the square steel. This method not only saves the process of performing multiple processing on the square steel, but also does not require the opening of a top screw connection hole on the handle. During assembly, the square steel can be directly inserted into the connection cavity to directly achieve the limiting function. Therefore, the technical solution provided by the utility model can directly use a complete square steel to install the split handle lock assembly, without the need to provide a limiting groove on the square steel to match the top screw holes provided on the inner and outer handles. The processing is more convenient, and during assembly, there is no need to align the dial wheel, the square steel, and the handle with the position where the square steel is limited, which significantly improves the assembly efficiency.

[0033] The limiting device includes a limiting bead 41. A limiting bead installation cavity 42 connected to the connecting cavity 32 is arranged circumferentially of the connecting cavity 32. After the limiting bead 41 is installed in the limiting bead installation cavity 42, one end is exposed in the connecting cavity 32. The limiting bead installation cavity 42 is provided with a blocking portion 43 at one end close to the connecting cavity 32 to prevent the limiting bead 41 from escaping from the limiting bead installation cavity 42.

[0034] By adopting the above technical solution, through the design of the limiting bead installation cavity and the limiting bead, one side of the square steel contacts the limiting bead when it is inserted into the connecting cavity, and the limiting bead always abuts against one side of the square steel, thereby preventing the square steel from circumferentially displacing in the connecting cavity and causing the lock to sag. Of course, multiple limiting bead installation cavities and limiting beads can be arranged at different circumferential positions of the connecting cavity to further improve the limiting effect. The setting of the blocking part can prevent the limiting bead from escaping from the limiting bead installation cavity when the dial wheel is not installed with the square steel.

[0035] An elastic retaining component is provided in the connecting cavity 32, one end of which is always against the limiting bead 41, and the limiting bead 41 is exposed in the connecting cavity 32 through one end of the elastic retaining component;

[0036] By adopting the above technical solution, the elastic retaining component is provided to ensure that the limiting bead always exerts a force on the circumference of the square steel after it abuts against the square steel. When the size of the connecting cavity is within the tolerance range, the elastic retaining component can be compressed to adapt to the square steel, thereby improving the versatility.

[0037] The elastic retaining assembly includes a spring 5, one end of the spring 5 abuts against one end of the limiting bead installation cavity 42 away from the connecting cavity 32 and the other end abuts against the limiting bead 41;

[0038] By adopting the above technical solution, a return spring is installed in the limiting bead installation cavity, one end of the return spring abuts against the bottom of the limiting bead installation cavity and the other end abuts against the limiting bead, thereby causing one end of the limiting bead to be exposed in the connecting cavity, thereby improving versatility;

[0039] The limiting bead installation cavity 42 is opened at one end away from the connecting cavity 32, and an internal thread is provided at one end of the limiting bead installation cavity 42 facing the opening, and the limiting bead installation cavity 42 is connected to the base 6 through the internal thread;

[0040] By opening the end of the limiting bead installation cavity away from the connecting cavity and providing an internal thread, and connecting the base through the internal thread, the base can adjust the linear distance from itself to the connecting cavity in the limiting bead installation cavity, thereby adjusting the length of the end of the limiting bead exposed in the connecting cavity. Due to the presence of the base, when a return spring is provided in the limiting bead installation cavity, the force applied to the limiting bead by the spring can be adjusted by adjusting the linear distance from the base to the connecting cavity, thereby adjusting the tightness between the limiting bead and the square steel.

[0041] The base 6 is a top screw. By setting the base as a top screw, it is not only convenient to process, but also easy to adjust because the top screw has an adjustment hole adapted to a wrench. Of course, the base is not limited to the top screw, and other general fasteners with external threads and an adjustment port at one end can be used as the base;

[0042] The limiting ball 41 is a steel ball;

[0043] The limit ball is set as a steel ball, which is easy to purchase and the cooperation between the steel ball and the return spring is easy to assemble;

[0044] A plurality of positioning posts 12 are circumferentially arranged at one end of the split ring 1, and positioning holes 21 are arranged at positions corresponding to the positioning posts 12. The split inner liner 2 is sleeved on the positioning posts 12 of the split ring 1 through the positioning holes 21.

[0045] By arranging a plurality of positioning posts on the split ring, generally at least two positioning posts are arranged, and the positioning posts cooperate with the positioning holes of the split inner liner to sleeve the split inner liner on the split ring to play a fixing role;

[0046] The beneficial effects of the utility model are as follows: by arranging the limit device on the thumbwheel, it is unnecessary to process the two ends of the square steel, thus saving processing costs, making assembly more convenient, and improving assembly efficiency.

Claims

1. A door lock split ring structure, comprising a split ring, a split inner lining, and a thumbwheel, wherein a through hole is provided in the middle of the split ring, the thumbwheel is sleeved with the split inner lining, and the split inner lining is sleeved into the split ring for fixed assembly, characterized in that: After the thumbwheel is inserted into the split lining, one end passes through the through hole and forms a handle connecting end, and the other end of the thumbwheel opposite to the handle connecting end is provided with a connecting cavity adapted to the shape of the square steel, and the thumbwheel is provided with at least one set of limiting devices on one side of the connecting cavity that can circumferentially resist the square steel inserted into the connecting cavity to limit the circumferential movement of the square steel.

2. A door lock split ring structure according to claim 1, characterized in that: The limiting device includes a limiting bead, and the connecting cavity is circumferentially provided with a limiting bead installation cavity connected to the connecting cavity. After the limiting bead is installed in the limiting bead installation cavity, one end is exposed in the connecting cavity, and the limiting bead installation cavity is provided with a blocking part at one end close to the connecting cavity to prevent the limiting bead from escaping from the limiting bead installation cavity.

3. A door lock split ring structure according to claim 2, characterized in that: An elastic retaining component with one end always abutting against the limiting bead is arranged in the connecting cavity, and the limiting bead is exposed in the connecting cavity through one end of the elastic retaining component.

4. A door lock split ring structure according to claim 3, characterized in that: The elastic retaining assembly comprises a spring, one end of the spring abuts against one end of the limiting bead installation cavity away from the connecting cavity, and the other end of the spring abuts against the limiting bead.

5. A door lock split ring structure according to claim 2, 3 or 4, characterized in that: The limiting bead installation cavity is opened at one end away from the connecting cavity, an internal thread is provided at one end of the limiting bead installation cavity facing the opening, and the limiting bead installation cavity is connected to the base via the internal thread.

6. A door lock split ring structure according to claim 5, characterized in that: The base is a top screw.

7. A door lock split ring structure according to claim 2, 3 or 4, characterized in that: The limiting beads are steel balls.

8. A door lock split ring structure according to claim 1 or 2 or 3 or 4, characterized in that: A plurality of positioning posts are circumferentially arranged at one end of the split ring, and positioning holes are arranged at positions corresponding to the positioning posts of the split inner liner, and the split inner liner is sleeved on the positioning posts of the split ring through the positioning holes.

Images