Square shaft handle with child lock function

Abstract

The utility model discloses a square shaft handle with a child lock function. The square shaft handle comprises a handle seat; the square shaft assembly can rotate relative to the handle seat; the square shaft assembly is provided with a clutch slot; the handle assembly can rotate relative to the handle seat; the handle assembly is provided with a clutch insertion block, and the clutch insertion block is connected with the clutch insertion groove in an inserted mode. And the handle reset structure is used for driving the handle assembly to reset, so that the clutch insertion block is separated from the clutch insertion groove. According to the square shaft lever handle with the child lock function, the self-locking function is achieved through the elastic force effect of the handle reset structure on the handle assembly, and the structure is simple and practical. When the pressing rotation state is achieved, the handle assembly can be rotated like a conventional handle only by overcoming the elastic force effect of the handle reset structure and pressing the handle assembly downwards, and the opening and closing functions of the handle are achieved. Compared with a handle which achieves locking through a lock cylinder key, the square shaft handle is simpler and more convenient to operate.

Description

TECHNICAL FIELD

[0001] The utility model relates to door and window accessory technical field, especially a square shaft handle with child lock function. BACKGROUND

[0002] With the development of aluminum alloy door and window, the continuous deepening of energy conservation and environmental protection consciousness, people have put forward higher requirements for the function of door and window hardware fittings. The handle commonly used at present can rotate its handle at will to realize the opening and closing function of the handle, so as to achieve the opening and closing effect of the window sash. For the window of higher floor, if the handle does not have locking function, the child may rotate the handle at will to open the window, which may have certain safety risk. The common handle is locked by lock cylinder key, which increases the cost of product, and the use and storage of key are not convenient. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a square shaft handle with child lock function to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The solution to the technical problem of the utility model is as follows:

[0005] A square shaft handle with child lock function comprises:

[0006] A handle seat;

[0007] A square shaft assembly, which is rotatable relative to the handle seat; the square shaft assembly is provided with a clutch slot;

[0008] A handle assembly, which is rotatable relative to the handle seat; the handle assembly is provided with a clutch block, and the clutch block is in plug-in connection with the clutch slot;

[0009] A handle reset structure, which is used to drive the handle assembly to reset and make the clutch block disengage from the clutch slot.

[0010] As a further improvement of the above technical solution, the handle assembly and the handle seat are limited by a limiting assembly, the limiting assembly comprises a limiting structure and a limiting slot, and the limiting structure is in plug-in connection with the limiting slot; when the handle assembly approaches the handle seat, the limiting structure gradually disengages from the limiting slot; after the limiting structure completely disengages from the limiting slot, the handle assembly can rotate relative to the handle seat.

[0011] As a further improvement of the above technical solution, the handle assembly comprises:

[0012] A handle body;

[0013] A connecting shaft is fixedly connected with the handle body, and the connecting shaft is provided with a limiting stopper;

[0014] The handle seat is provided with a limiting piece sliding cavity, and the limiting stopper slides in the limiting piece sliding cavity.

[0015] As a further improvement of the above technical solution, the handle body and the connecting shaft are connected through a fixing assembly, and the fixing assembly comprises a fixing shaft and a fixing groove in interference fit.

[0016] As a further improvement of the above technical solution, a first positioning assembly is further included, and the first positioning assembly comprises:

[0017] A first positioning ball is close to or away from the handle assembly;

[0018] A first elastic structure is used to drive the first positioning ball to be close to the handle assembly;

[0019] A first positioning groove is arranged on the handle assembly, and the first positioning groove is used to be clamped with the first positioning ball.

[0020] As a further improvement of the above technical solution, the number of the first positioning grooves is four, and the four first positioning grooves are arranged at equal distances around the rotation axis of the handle assembly.

[0021] As a further improvement of the above technical solution, a second positioning assembly is further included, and the second positioning assembly comprises:

[0022] A second positioning ball is close to or away from the square shaft assembly;

[0023] A second elastic structure is used to drive the second positioning ball to be close to the square shaft assembly;

[0024] A second positioning groove is arranged on the square shaft assembly, and the second positioning groove is used to be clamped with the second positioning ball.

[0025] As a further improvement of the above technical solution, the number of the second positioning grooves is four, and the four second positioning grooves are arranged at equal distances around the rotation axis of the square shaft assembly.

[0026] As a further improvement of the above technical solution, the handle seat comprises:

[0027] A main seat body is provided with a mounting hole;

[0028] A decorative cover is rotationally connected with the main seat body, and the decorative cover is used to shield the mounting hole.

[0029] As a further improvement of the above technical solution, the handle reset structure is a spring.

[0030] The utility model discloses a square shaft handle with child lock function, the self-locking function is that the handle assembly is subjected to the elastic force of handle reset structure, and the structure is simple and practical. When the handle assembly is pressed and rotated, only the elastic force of handle reset structure is overcome to press the handle assembly downward, the handle assembly can be rotated like the conventional handle assembly, and the opening and closing function of the handle assembly is realized.

[0031] The utility model is used in the technical field of door and window fittings. DRAWINGS

[0032] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed in the embodiment description will be briefly described below. Obviously, the described drawings are only a part of the embodiment of the utility model, not all the embodiments, and the skilled in the art can also obtain other design schemes and drawings according to these drawings without paying creative labor.

[0033] Figure 1 It is the explosion structure schematic diagram of the utility model embodiment;

[0034] Figure 2 It is the cross section direction schematic diagram of the handle assembly self-locking state and the handle assembly pressable rotating state of the utility model embodiment;

[0035] Figure 3 It is the A-A cross section schematic diagram of the handle assembly self-locking state of the utility model embodiment;

[0036] Figure 4 It is the B-B cross section schematic diagram of the handle assembly self-locking state of the utility model embodiment;

[0037] Figure 5 It is the A-A cross section schematic diagram of the handle assembly pressable rotating state of the utility model embodiment;

[0038] Figure 6 It is the B-B cross section schematic diagram of the handle assembly pressable rotating state of the utility model embodiment;

[0039] Figure 7 It is the cross section direction schematic diagram of the handle assembly rotating 90 degrees and then self-locking state of the utility model embodiment;

[0040] Figure 8 It is Figure 7 The structure schematic diagram of C-C cross section in it.

[0041] In the figure, 100, handle seat; 110, main seat body; 111, positioning groove; 120, decorative cover; 121, positioning convex strip; 130, bottom plate; 140, limiting piece sliding cavity; 150, mounting hole; 200, square shaft assembly; 210, positioning shaft; 211, clutch slot; 220, square shaft structure; 300, handle assembly; 310, handle main body; 311, handle body; 312, reset mounting groove; 313, insertion part; 320, connecting shaft; 321, clutch plug; 322, limiting stop piece; 330, fixing assembly; 331, fixing shaft; 332, fixing groove; 400, handle reset structure; 500, second positioning assembly; 510, positioning mounting frame; 520, second positioning ball; 530, second elastic structure; 540, second positioning groove; 600, limiting assembly; 610, limiting groove; 620, limiting structure; 700, first positioning assembly; 710, positioning ball; 720, first positioning groove. DETAILED DESCRIPTION

[0042] The concept, specific structure and generated technical effects of the present application will be described clearly and completely in combination with the embodiments and drawings, so as to fully understand the purpose, features and effects of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments, and other embodiments obtained by those skilled in the art without creative labor based on the embodiments of the present application all belong to the scope of protection of the present application. In addition, all the coupling / connection relationships mentioned in the text do not mean that the components are directly connected, but that a better coupling structure can be composed by adding or reducing coupling accessories according to the specific implementation situation. The technical features in the present application can be combined interactively without conflict.

[0043] REFERENCE Figures 1 to 8 A square shaft handle with a child lock function, comprising: a handle seat 100, a square shaft assembly 200, a handle assembly 300 and a handle reset structure 400.

[0044] Specifically, in the present embodiment, the handle seat 100 comprises: a main seat body 110, a decorative cover 120 and a bottom plate 130.

[0045] The bottom plate 130 is fixedly connected with the decorative cover 120, and a part mounting space is formed between the bottom plate 130 and the decorative cover 120. The four corners of the bottom plate 130 are fixed with the handle seat 100 by screws, and in other embodiments, other fixing methods can be used to fix the bottom plate 130 with the main seat body 110.

[0046] The main seat body 110 is provided with a limiting piece sliding cavity 140, and the limiting piece sliding cavity 140 is a groove structure with a circular cross section.

[0047] The main body 110 and the bottom plate 130 are both provided with two mounting holes 150 for screws to pass through, and the screws pass through the mounting holes 150 of the main body 110 and the bottom plate 130, and then are screwed with the door and window to realize the fixed installation of the handle seat 100.

[0048] The end face of the main body 110 away from the bottom plate 130 is provided with a cylindrical protrusion.

[0049] The decorative cover 120 is rotationally connected with the cylindrical protrusion on the main body 110, so that the decorative cover 120 can rotate relative to the main body 110, and the decorative cover 120 is used to shield the mounting hole 150 and the screw, thereby improving the appearance of the square shaft handle.

[0050] Specifically, in the embodiment, the main body 110 is provided with a positioning groove 111, the positioning groove 111 is an annular structure, the positioning groove 111 is opened on the edge of the end face of the main body 110 away from the bottom plate 130, and the decorative cover 120 is provided with a positioning protrusion 121, the positioning protrusion 121 is in clamping fit with the positioning groove 111, so as to realize the positioning of the decorative cover 120 and the main body 110. In other embodiments, the positioning groove 111 can also be arranged on the decorative cover 120, and the positioning protrusion 121 can also be arranged on the main body 110, and the person skilled in the art can select the arrangement positions of the positioning groove 111 and the positioning protrusion 121 according to actual needs.

[0051] Specifically, in the embodiment, the square shaft assembly 200 includes a positioning shaft 210 and a square shaft structure 220. The square shaft structure 220 is a conventional square shaft, and the two ends of the square shaft structure 220 are respectively provided with chamfer structures, and the square shaft structure 220 extends out of the handle seat 100 from the part mounting space. The positioning shaft 210 is arranged in the part mounting space, the positioning shaft 210 is rotationally connected with the handle seat 100, the positioning shaft 210 is connected with the square shaft structure 220 in a plug-in manner, and the positioning shaft 210 is in interference fit with the square shaft structure 220, so that the positioning shaft 210 and the square shaft structure 220 can rotate synchronously.

[0052] The positioning shaft 210 is provided with a clutch slot 211, which is a quadrilateral slot structure. In other embodiments, the clutch slot 211 can also be arranged as a triangular slot structure or other polygonal slot structure, and the person skilled in the art can select the specific shape of the clutch slot 211 according to actual needs.

[0053] Specifically, in the embodiment, the second positioning assembly 500 is arranged between the square shaft assembly 200 and the handle seat 100, and the second positioning assembly 500 includes a positioning mounting bracket 510, a second positioning ball 520, a second elastic structure 530, and a second positioning groove 540.

[0054] The positioning mounting frame 510 is fixedly arranged in the part mounting space, and the positioning mounting frame 510 is provided with a first mounting groove, and the extension direction of the first mounting groove is perpendicular to the rotation axis of the square shaft assembly 200. Specifically, in the embodiment, the number of the first mounting grooves is two, and the two first mounting grooves are symmetrically arranged about the center of the rotation axis of the square shaft assembly 200. In other embodiments, the number of the first mounting grooves can also be four, and the four first mounting grooves are circumferentially equidistantly arranged about the rotation axis of the square shaft assembly 200. Those skilled in the art can select the number of the first mounting grooves according to actual needs.

[0055] The second positioning ball 520 is arranged in the first mounting groove. Specifically, in the embodiment, the number of the second positioning balls 520 is two, and the two second positioning balls 520 are correspondingly arranged with the two first mounting grooves. In other embodiments, the number of the second positioning balls 520 is adaptively changed according to the number of the first mounting grooves. The second positioning ball 520 is in sliding connection with the first mounting groove, and the second positioning ball 520 can be close to or away from the square shaft assembly 200 relative to the positioning mounting frame 510.

[0056] The second elastic structure 530 is arranged in the first mounting groove. Specifically, in the embodiment, the number of the second elastic structures 530 is two, and the two second elastic structures 530 are correspondingly arranged with the two first mounting grooves. In other embodiments, the number of the second elastic structures 530 is adaptively changed according to the number of the first mounting grooves. Specifically, in the embodiment, the second elastic structure 530 is arranged as a spring, and the two ends of the second elastic structure 530 are in abutment with the second positioning ball 520 and the side wall of the first mounting groove respectively. The second elastic structure 530 makes the second positioning ball 520 always have a tendency to be close to the square shaft assembly 200.

[0057] The second positioning groove 540 is arranged in the square shaft assembly 200. Specifically, in the embodiment, the number of the second positioning grooves 540 is four, and the four second positioning grooves 540 are circumferentially equidistantly arranged about the central axis of the square shaft assembly 200. In other embodiments, the number of the second positioning grooves 540 can also be eight, and those skilled in the art can adjust the number and arrangement mode of the second positioning grooves 540 according to actual needs. The second positioning groove 540 is used for clamping the second positioning ball 520 to realize positioning of the square shaft assembly 200.

[0058] The handle assembly 300 is in rotational connection with the handle seat 100. Specifically, the handle assembly 300 comprises a handle main body 310 and a connecting shaft 320.

[0059] The handle body 310 comprises a handle body 311 and an insertion part 313, the handle body 311 and the insertion part 313 are fixedly connected, the handle body 311 is arranged outside the handle seat 100, the insertion part 313 penetrates through the main seat body 110 and enters into the part mounting space, the insertion part 313 is a cylindrical structure, so that the handle assembly 300 can rotate relative to the handle seat 100.

[0060] The handle body 311 is provided with a reset mounting groove 312 at one end close to the handle seat 100. Specifically, in the embodiment, the handle reset structure 400 is arranged as a spring structure, the handle reset structure 400 is partially arranged in the reset mounting groove 312, the two ends of the handle reset structure 400 respectively abut against the groove bottom of the reset mounting groove 312 and the decorative cover 120, the handle reset structure 400 makes the handle assembly 300 always have a tendency to move away from the handle seat 100, so that the handle assembly 300 is automatically reset; and the handle reset structure 400 can make the decorative cover 120 always have a tendency to move close to the main seat body 110, so as to ensure the limiting of the decorative cover 120 and the main seat body 110.

[0061] The connecting shaft 320 and the insertion part 313 are connected through a fixing assembly 330, the fixing assembly 330 comprises a fixing shaft 331 and a fixing groove 332, the fixing shaft 331 and the fixing groove 332 are in interference fit, specifically, the fixing shaft 331 is arranged on the connecting shaft 320, the fixing groove 332 is arranged on the insertion part 313, the cross-sectional shape of the fixing shaft 331 and the fixing groove 332 is arranged as a square, the end of the connecting shaft 320 is pressed into the insertion part 313 by stamping, so as to realize the fixation of the connecting shaft 320 and the insertion part 313.

[0062] The connecting shaft 320 is provided with a clutch plug 321 protruding at one end close to the square shaft assembly 200, when the clutch plug 321 is inserted into the clutch insertion groove 211, the handle assembly 300 and the square shaft assembly 200 can rotate synchronously, while when the clutch plug 321 is separated from the clutch insertion groove 211, the rotation of the handle assembly 300 will not drive the square shaft assembly 200 to rotate, the clutch plug 321 and the clutch insertion groove 211 play a role in controlling the relative motion of the handle assembly 300 and the square shaft assembly 200.

[0063] Since the handle reset structure 400 makes the handle assembly 300 always have a tendency to move away from the handle seat 100, the clutch plug 321 always has a tendency to move away from the clutch insertion groove 211, so as to ensure that the clutch plug 321 is kept in a state of being separated from the clutch insertion groove 211 without being affected by other external forces, so as to avoid that the square shaft assembly 200 is accidentally rotated with the handle assembly 300.

[0064] The connecting shaft 320 is provided with a limiting baffle 322 which slides in the limiting baffle sliding cavity 140 and can rotate relative to the limiting baffle sliding cavity 140. The limiting baffle 322 is used to limit the position of the connecting shaft 320.

[0065] Specifically, a limiting assembly 600 is arranged between the handle seat 100 and the handle assembly 300, and the limiting assembly 600 is used to limit the handle seat 100 and the handle assembly 300. Specifically, in the embodiment, the limiting assembly 600 includes a limiting groove 610 and a limiting structure 620. The limiting groove 610 is opened in the handle seat 100, and the limiting structure 620 is arranged at one end of the insertion part 313 close to the square shaft assembly 200. The limiting structure 620 and the limiting groove 610 have a quadrilateral structure in cross section, and the limiting groove 610 and the limiting structure 620 are connected in plug-in connection.

[0066] When the limiting structure 620 is arranged in the limiting groove 610, the handle assembly 300 is limited and cannot rotate relative to the handle seat 100, so as to avoid accidental rotation of the handle assembly 300. When the handle assembly 300 approaches the handle seat 100, the limiting structure 620 gradually leaves the limiting groove 610. After the limiting structure 620 completely leaves the limiting groove 610, the handle assembly 300 can rotate relative to the handle seat 100.

[0067] Specifically, in the embodiment, a first positioning assembly 700 is arranged between the handle assembly 300 and the handle seat 100. The first positioning assembly 700 includes a first positioning ball, a first elastic structure, and a first positioning groove 720.

[0068] The first positioning groove 720 is opened in the connecting shaft 320. In the embodiment, the number of the first positioning groove 720 is four, and the four first positioning grooves 720 are arranged at equal intervals around the rotation axis of the handle assembly 300. In other embodiments, the number of the first positioning groove 720 can also be eight, and those skilled in the art can select the number of the first positioning groove 720 according to actual needs.

[0069] The first positioning ball and the first elastic structure are integrated structures. Specifically, the first positioning ball and the first elastic structure are integrated in a positioning bead 710 (the positioning bead 710 is a commonly used component in the art, and the structure of the positioning bead 710 will not be described here). The positioning bead 710 is pressed into the handle seat 100 by stamping, and the positioning bead 710 is in interference fit with the handle seat 100 to fix the positioning bead 710 with the handle seat 100. The first positioning ball can approach or move away from the handle assembly 300, so that the first positioning bead 710 is clamped or unclamped with the first positioning groove 720, thereby achieving positioning of the handle assembly 300.

[0070] Specifically, in the present embodiment, the number of positioning beads 710 is set to two, i.e., the number of the first positioning ball and the first elastic structure is respectively set to two, and the two positioning beads 710 are symmetrically arranged around the rotation axis center of the handle assembly 300. In other embodiments, the number of positioning beads 710 can also be set to four or other numbers, and those skilled in the art can select the number of positioning beads 710 according to actual needs.

[0071] The assembly process of the present scheme is as follows: the positioning bead 710 is press-fitted into the main body 110, then the decorative cover 120, the handle reset structure 400, and the handle main body 310 are assembled in sequence, the connecting shaft 320 is then press-fitted with the handle main body 310, then the positioning mounting bracket 510, the second positioning ball 520, and the second elastic structure 530 are assembled, then the assembled components of the positioning mounting bracket 510, the second positioning ball 520, and the second elastic structure 530 are installed into the part mounting space of the main body 110, then the positioning shaft 210 is installed to the positioning mounting bracket 510, then the square shaft structure 220 is fixed with the positioning shaft 210 by pressing, and finally the bottom plate 130 is installed to the main body 110 and fixed with the main body 110 by means of a cross-slot countersunk screw.

[0072] When the handle is installed on the sash, the decorative cover 120 is first lifted and rotated relative to the main body 110, after the decorative cover 120 is rotated by a certain angle, the mounting screw is installed into the mounting hole 150, after the installation of the mounting screw is completed, the decorative cover 120 is reset, and the installation of the square shaft handle and the sash is completed.

[0073] The working state of the square shaft handle with a child lock function mainly consists of a self-locking state and a press-rotating state. Among them:

[0074] 1. Self-locking state: When the handle assembly 300 is in a 0° or 90° natural state, the handle assembly 300 cannot rotate left and right due to the elastic force of the handle reset structure 400 acting on the handle assembly 300 and the cooperation between the handle assembly 300 and the handle seat 100 through the limiting groove 610 and the limiting structure 620, and the handle assembly 300 is in a self-locking state.

[0075] 2. Press-rotating state: When the handle is in a 0° natural state, the user presses the handle assembly 300 towards the handle seat 100 against the elastic force of the handle reset structure 400, so that the limiting structure 620 of the handle assembly 300 is disengaged from the limiting groove 610 of the handle seat 100, at this time the handle assembly 300 is in an unlocked state, and the handle assembly 300 can rotate relative to the handle seat 100. And the clutch plug 321 of the connecting shaft 320 is connected with the clutch slot 211 of the positioning shaft 210, at this time the square shaft assembly 200 can rotate with the handle assembly 300, and can be gradually rotated to a 90° state, and vice versa.

[0076] The square shaft handle with the child lock function, the self-locking function is realized by the elastic force of the handle reset structure 400 on the handle assembly 300 and the limiting assembly 600 between the handle assembly 300 and the handle seat 100, the structure is simple and practical, the handle assembly 300 is positioned through the positioning bead 710 and the first positioning groove 720, the stability of the handle is increased, the handle assembly 300 is not easy to shake, and the locking stability is good. When the pressing and rotating state is realized, the handle assembly 300 can be rotated like the conventional handle, the opening and closing function of the handle is realized, only the elastic force of the handle reset structure 400 is overcome to press the handle assembly 300 downwards. Compared with the handle that realizes locking by relying on the lock core key, the operation is more simple and convenient.

[0077] The preferred embodiments of the utility model are specifically described above, but the present application is not limited to the described embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the utility model, and these equivalent modifications or replacements are all included in the range defined by the claims of the present application.

Claims

1. A square handle with a child lock function, characterized by: The utility model relates to a handle assembly and a handle seat, and belongs to the field of household appliances. It comprises: A handle seat; A square shaft assembly rotatable relative to the handle seat; the square shaft assembly is provided with a clutch slot; A handle assembly rotatable relative to the handle seat; the handle assembly is provided with a clutch plug which is in plug-in connection with the clutch slot; 2. The square handle of claim 1, wherein: A handle reset structure for driving the handle assembly to reset and making the clutch plug disengage from the clutch slot.

3. The square handle of claim 1, wherein: The handle assembly and the handle seat are limited by a limiting assembly, which comprises a limiting structure and a limiting slot in plug-in connection; when the handle assembly approaches the handle seat, the limiting structure gradually disengages from the limiting slot, and after the limiting structure completely disengages from the limiting slot, the handle assembly can rotate relative to the handle seat. The handle assembly comprises: A handle main body; A connecting shaft fixedly connected with the handle main body, which is provided with a limiting baffle; 4. The square handle of claim 3, wherein: The handle seat is provided with a limiting baffle sliding cavity, and the limiting baffle slides in the limiting baffle sliding cavity.

5. The square handle of claim 1, wherein: The handle main body and the connecting shaft are connected by a fixing assembly, which comprises a fixing shaft and a fixing slot in interference fit. It further comprises a first positioning assembly, which comprises: A first positioning ball which can approach or move away from the handle assembly; A first elastic structure for driving the first positioning ball to approach the handle assembly; 6. The square handle of claim 5, wherein: A first positioning slot provided on the handle assembly, which is used for clamping the first positioning ball.

7. The square handle of claim 1, wherein: The number of the first positioning slots is four, and the four first positioning slots are circumferentially equidistantly arranged around the rotation axis of the handle assembly. It further comprises a second positioning assembly, which comprises: A second positioning ball which can approach or move away from the square shaft assembly; A second elastic structure for driving the second positioning ball to approach the square shaft assembly; 8. The square handle of claim 7, wherein: A second positioning slot provided on the square shaft assembly, which is used for clamping the second positioning ball.

9. The square handle of claim 1, wherein: The number of the second positioning slots is four, and the four second positioning slots are circumferentially equidistantly arranged around the rotation axis of the square shaft assembly. The handle seat comprises: A main seat body provided with a mounting hole; 10. The square handle of claim 1, wherein: A decorative cover in rotational connection with the main seat body, which is used for shielding the mounting hole. The handle reset structure is a spring.

Images