A roller shutter balance self-locking tail assembly and connection structure

Abstract

The present invention discloses a rolling curtain balance self-locking tail assembly, which includes a dial wheel, a telescopic component, a compression spring, a tail housing and a self-locking component. The dial wheel is arranged at one end of the tail housing. The telescopic component is slidably connected to the inner side of the tail housing. One end of the telescopic component passes through the dial wheel, and a connecting shaft is further arranged at one end of the telescopic component. The compression spring is arranged in the tail housing, and one end of the compression spring abuts against the telescopic component. The self-locking component is movably connected to the tail housing. At least one card slot is arranged on the outer side of the dial wheel, and a locking tongue matching the card slot is arranged on the self-locking component. In the present invention, by arranging the self-locking component on the tail housing, after the dial wheel is rotated to an appropriate position during installation, the locking tongue of the self-locking component is inserted into the card slot of the dial wheel, so as to realize the locking between the tail housing and the dial wheel. Under the locking of the self-locking component, the dial wheel cannot perform circumferential movement, thereby realizing the locking of the axial sliding of the connecting shaft.

Description

Technical Field

[0001] The present invention relates to the technical field of window decorations, and particularly to a rolling curtain balance self-locking tail-making assembly and a connection structure thereof. Background Art

[0002] The rebounding tail-making products have the characteristics of convenient installation and disassembly, so they are widely used in the installation of office rolling curtains. However, the existing rebounding tail-making lacks a self-locking structure. When the fabric runs off, the friction between the fabric and the outer side of the dial drives the dial to rotate, resulting in the separation and dropping of the rolling curtain from the connecting seat, thus posing a serious safety hazard. In addition, the reel will jump and rotate eccentrically during rotation, affecting the normal use of the product. Summary of the Invention

[0003] The purpose of the present invention is to provide a rolling curtain balance self-locking tail-making assembly and a connection structure thereof to solve one or more of the technical problems in the above background art.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A rolling curtain balance self-locking tail-making assembly includes a dial, a telescopic member, a compression spring, a tail-making housing and a self-locking member. The dial is arranged at one end of the tail-making housing. The telescopic member is slidably connected to the inner side of the tail-making housing. One end of the telescopic member passes through the dial. A connecting shaft is further arranged at one end of the telescopic member. The compression spring is arranged in the tail-making housing, and one end of the compression spring abuts against the telescopic member.

[0006] When the dial is rotated, the telescopic member drives the connecting shaft to make an axial sliding.

[0007] The self-locking member is movably connected to the tail-making housing. At least one card slot is arranged on the outer side of the dial, and a locking tongue matching with the card slot is arranged on the self-locking member.

[0008] Preferably, an annular mounting portion extending outward is arranged at one end of the tail-making housing. A boss is arranged on the annular mounting portion. A fitting hole is formed at one end of the self-locking member, and the fitting hole cooperates with the boss. A lock catch is arranged at the other end of the self-locking member, and a buckle matching with the lock catch is arranged on the annular mounting portion. A limiting portion is further arranged on the annular mounting portion, and the outer side of the locking tongue is slidably matched with the limiting portion.

[0009] Preferably, the dial includes an adjusting disc and a first positioning tube. The adjusting disc is arranged at one end of the first positioning tube, and the first positioning tube abuts against the telescopic member.

[0010] The end face of the first positioning tube includes a plurality of outer inclined surfaces and a plurality of outer flat surfaces with gradually decreasing distances from the dial wheel. The outer flat surfaces are arranged between two adjacent outer inclined surfaces, and the plurality of outer inclined surfaces and the plurality of outer flat surfaces are sequentially connected to form a stepped shape;

[0011] Preferably, the dial wheel further includes a second positioning tube, which is arranged inside the first positioning tube, and both the first positioning tube and the second positioning tube are abutted against the telescopic member;

[0012] The end face of the second positioning tube includes a plurality of inner inclined surfaces and a plurality of inner flat surfaces with gradually decreasing distances from the dial wheel. The inner flat surfaces are arranged between two adjacent inner inclined surfaces, and the plurality of inner inclined surfaces and the plurality of inner flat surfaces are sequentially connected to form a stepped shape; The outer inclined surface and the inner inclined surface with the same distance from the dial wheel are symmetrically arranged left and right.

[0013] Preferably, the telescopic member includes a core shaft and a sliding cylinder. The sliding cylinder is arranged outside the core shaft. One end of the core shaft is provided with a connecting shaft, and a gear is further arranged outside the connecting shaft. A fitting gap is arranged between the sliding cylinder and the core shaft. A first abutting block is arranged outside the core shaft, and a second abutting block is arranged inside the sliding cylinder. The first abutting block and the second abutting block respectively abut against the end face of the second positioning tube and the end face of the first positioning tube.

[0014] Preferably, the dial wheel further includes a positioning table, which is arranged at one end of the first positioning tube. A plurality of card slots are arranged outside the positioning table, and the plurality of card slots are respectively located outside the plurality of outer flat surfaces.

[0015] Preferably, it further includes a pin. A limiting hole is arranged outside the tail-making shell, and a limiting sliding groove is further arranged outside the positioning table. One end of the pin passes through the limiting hole and is slidably connected with the limiting sliding groove.

[0016] Preferably, a plurality of sliding blocks are arranged inside the tail-making shell, and a plurality of axial sliding grooves are arranged outside the sliding cylinder. The sliding blocks are slidably matched with the axial sliding grooves.

[0017] Preferably, a spring limiting hole is arranged at the bottom of the sliding cylinder. One end of the compression spring corresponds to the spring limiting hole, and the other end of the compression spring abuts against the other end of the tail-making shell.

[0018] The present invention also proposes a rolling curtain connection structure, which includes a tail-making assembly and a connection seat. An installation hole matching the connecting shaft is arranged on the connection seat, and the tail-making assembly is detachably connected to the connection seat through the connecting shaft.

[0019] The beneficial effects of the present invention are as follows: 1. By providing a self-locking member on the tail-making shell of the present invention, when installing, after rotating the dial to an appropriate position, the locking tongue of the self-locking member is inserted into the card slot of the dial, realizing the locking between the tail-making shell and the dial. Under the locking of the self-locking member, the dial cannot move circumferentially, thereby realizing the locking of the axial sliding of the connecting shaft. If the fabric runs off at this time, the friction between the fabric and the outer side of the dial cannot drive the dial to rotate, ensuring the connection between the tail-making assembly and the connecting seat, and thus ensuring the safety of the roller shutter during use;

[0020] 2. By providing the first positioning tube and the second positioning tube, there are two symmetric contact points between the core shaft and the dial, so as to decompose the elastic force provided by the compression spring to the core shaft into two balanced forces, ensuring the coaxial movement of the core shaft, the dial and the tail-making shell, and effectively solving the problems that the existing scroll will jump and rotate eccentrically when rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings further illustrate the present invention, but the content in the drawings does not constitute any limitation to the present invention.

[0022] Figure 1 is a schematic diagram of the overall structure of the tail-making assembly according to Embodiment 1 of the present invention;

[0023] Figure 2 is a schematic diagram of the internal structure of the tail-making assembly according to Embodiment 1 of the present invention;

[0024] Figure 3 is a schematic diagram of the structure of the tail-making shell and the telescopic member according to Embodiment 1 of the present invention;

[0025] Figure 4 is a schematic diagram of the structure of the dial according to Embodiment 1 of the present invention;

[0026] Figure 5 is a side view schematic diagram of the dial according to Embodiment 1 of the present invention;

[0027] Figure 6 is a schematic diagram of the structure of the roller shutter connection structure according to Embodiment 2 of the present invention.

[0028] Wherein: 23, the dial wheel; 22, the telescopic member; 26, the compression spring; 25, the tail housing; 27, the self-locking member; 21, the connecting shaft; 2702, the locking tongue; 2302, the card slot; 2501, the annular mounting portion; 2503, the boss; 2701, the mating hole; 2703, the lock catch; 2504, the buckle; 2505, the limiting portion; 2301, the adjusting disc; 2304, the first positioning tube; 2305, the second positioning tube; 2206, the mandrel; 2204, the sliding cylinder; 2203, the gear; 2207, the mating gap; 2201, the first abutting block; 2202, the second abutting block; 24, the pin; 2507, the limiting hole; 2303, the limiting chute; 2502, the slider; 2205, the axial chute; 1, the connecting seat; 1001, the mounting hole; 2, the tail assembly; 2401, the tight-fitting portion; 2402, the rivet portion. Detailed implementation manners

[0029] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation manners.

[0030] Embodiment 1

[0031] A rolling shutter balance self-locking tail assembly, referring to the attached Figure 1 and 2 , includes a dial wheel 23, a telescopic member 22, a compression spring 26, a tail housing 25 and a self-locking member 27. The dial wheel 23 is provided at one end of the tail housing 25. The telescopic member 22 is slidably connected to the inside of the tail housing 25. One end of the telescopic member 22 passes through the dial wheel 23. One end of the telescopic member 22 is also provided with a connecting shaft 21. The compression spring 26 is provided inside the tail housing 25. One end of the compression spring 26 abuts against the telescopic member 22;

[0032] When the dial wheel 23 rotates, the telescopic member 22 drives the connecting shaft 21 to perform axial sliding;

[0033] The self-locking member 27 is movably connected to the tail housing 25. At least one card slot 2302 is provided on the outer side of the dial wheel 23. A locking tongue 2702 matching the card slot 2302 is provided on the self-locking member 27.

[0034] Preferably, referring to the attached Figure 3 , one end of the tail housing 25 is provided with an outwardly extending annular mounting portion 2501. A boss 2503 is provided on the annular mounting portion 2501. A mating hole 2701 is opened at one end of the self-locking member 27. The mating hole 2701 cooperates with the boss 2503; A lock catch 2703 is provided at the other end of the self-locking member 27. A buckle 2504 matching the lock catch 2703 is provided on the annular mounting portion 2501; A limiting portion 2505 is also provided on the annular mounting portion 2501. The outer side of the locking tongue 2702 is slidably matched with the limiting portion 2505.

[0035] By providing a boss 2503 on the annular mounting portion 2501 to correspond to the mating hole 2701 on the self-locking member 27, the self-locking member 27 is movably connected to the tail-making housing 25, and the self-locking member 27 can rotate about the boss 2503. A buckle 2504 is provided on the annular mounting portion 2501 to correspond to the lock catch 2703 on the self-locking member 27. When the locking dial 23 is tightened, the locking tongue 2702 on the self-locking member 27 corresponds to the card slot 2302 on the dial 23, and at the same time, the lock catch 2703 corresponds to the buckle 2504, so that when the locking dial 23 is tightened, the self-locking member 27 is latched onto the tail-making housing 25, which plays a role in fixing the self-locking member 27 and prevents the situation that the fabric deviation drives the self-locking member 27 to disengage from the dial 23, ensuring the safe operation of the rolling curtain. A limiting portion 2505 is provided on the annular mounting portion 2501. During the movement of the self-locking member 27, the outer side of the locking tongue 2702 is in sliding fit with the limiting portion 2505, thereby playing a role in guiding and positioning the movement of the self-locking member 27.

[0036] Preferably, referring to the attached Figure 4 , the dial 23 includes an adjustment disk 2301 and a first positioning tube 2304. The adjustment disk 2301 is provided at one end of the first positioning tube 2304, and the first positioning tube 2304 abuts against the telescopic member 22;

[0037] The end face of the first positioning tube 2304 includes a first outer inclined surface, a second outer inclined surface, and a third outer inclined surface whose distances from the dial 23 decrease in sequence. One end of the first outer inclined surface is provided with a first outer platform surface. A second outer platform surface is provided between the first outer inclined surface and the second outer inclined surface, a third outer platform surface is provided between the second outer inclined surface and the third outer inclined surface, and the other end of the third outer inclined surface is provided with a fourth outer platform surface. The first outer platform surface, the first outer inclined surface, the second outer platform surface, the second outer inclined surface, the third outer platform surface, the third outer inclined surface, and the fourth outer platform surface are connected in sequence to form a stepped shape. Thus, by providing the first outer inclined surface, the second outer inclined surface, and the third outer inclined surface on the first positioning tube 2304 with distances from the dial 23 decreasing in sequence, when the dial 23 rotates, the telescopic member 22 is correspondingly in contact with the first outer inclined surface, the second outer inclined surface, and the third outer inclined surface under the action of the compression spring 26, driving the connecting shaft 21 to perform telescopic axial movement. By providing the first outer platform surface, the second outer platform surface, the third outer platform surface, and the fourth outer platform surface, when the dial 23 rotates until the telescopic member 22 abuts against the first outer platform surface, the second outer platform surface, the third outer platform surface, or the fourth outer platform surface, the supporting force provided by the first outer platform surface, the second outer platform surface, the third outer platform surface, or the fourth outer platform surface is equal in magnitude and opposite in direction to the spring force provided by the compression spring 26. Thus, it is ensured that when the telescopic member 22 abuts against the first outer platform surface, the second outer platform surface, the third outer platform surface, or the fourth outer platform surface at this time, the telescopic member 22 will not perform axial sliding, so that the extended length of the connecting shaft 21 has three levels of adjustment, facilitating the adjustment of the extended length of the connecting shaft 21. In some other embodiments, the number of outer inclined surfaces can be multiple, so that the extended length of the connecting shaft 21 has multiple levels of adjustment.

[0038] Preferably, the dial 23 further includes a second positioning tube 2305. The second positioning tube 2305 is arranged inside the first positioning tube 2304, and both the first positioning tube 2304 and the second positioning tube 2305 abut against the telescopic member 22;

[0039] The end face of the second positioning tube 2305 includes a first inner inclined surface, a second inner inclined surface, and a third inner inclined surface with gradually decreasing distances from the dial 23. One end of the first inner inclined surface is provided with a first inner platform surface. A second inner platform surface is provided between the first inner inclined surface and the second inner inclined surface, and a third inner platform surface is provided between the second inner inclined surface and the third inner inclined surface. The other end of the third inner inclined surface is provided with a fourth inner platform surface. The first inner platform surface, the first inner inclined surface, the second inner platform surface, the second inner inclined surface, the third inner platform surface, the third inner inclined surface, and the fourth inner platform surface are sequentially connected to form a stepped shape. The first inner inclined surface is symmetric with the first outer inclined surface, the second inner inclined surface is symmetric with the second outer inclined surface, and the third inner inclined surface is symmetric with the third outer inclined surface. Thus, the telescopic member 22 is simultaneously in contact with the first positioning tube 2304 and the second positioning tube 2305, so that there are two symmetric contact points between the telescopic member 22 and the dial 23, and the elastic force provided by the compression spring 26 to the telescopic member 22 is decomposed into two parallel spring forces, increasing the contact area between the telescopic member 22 and the dial 23, ensuring the coaxial movement of the mandrel 2206, the dial 23, and the tail cover, making the movement of the telescopic member 22 more stable when the dial 23 rotates, and avoiding the phenomenon of reel jumping.

[0040] Preferably, the telescopic member 22 includes a mandrel 2206 and a sliding cylinder 2204. The sliding cylinder 2204 is arranged outside the mandrel 2206. The connecting shaft 21 is press-fitted at one end of the mandrel 2206. A gear 2203 is further arranged outside the connecting shaft 21. A fitting gap 2207 is provided between the sliding cylinder 2204 and the mandrel 2206. A first abutting block 2201 is arranged outside the mandrel 2206, and a second abutting block 2202 is arranged inside the sliding cylinder 2204. The first abutting block 2201 and the second abutting block 2202 respectively abut against the end face of the second positioning tube 2305 and the end face of the first positioning tube 2304. Thus, the fitting gap is provided so that both the first positioning tube 2304 and the second positioning tube 2305 can extend into the space between the mandrel 2206 and the sliding cylinder 2204 through the fitting gap, and respectively abut against the second abutting block 2202 and the first abutting block 2201, realizing that when the dial 23 rotates, the mandrel 2206 makes an axial movement; the first abutting block 2201 and the second abutting block 2202 are respectively arranged outside the axis core and inside the sliding cylinder 2204, avoiding the contact between the first abutting block 2201 and the first connecting tube and the contact between the second abutting block 2202 and the second connecting tube during the rotation of the dial 23.

[0041] Preferably, the dial wheel 23 further includes a positioning platform provided at one end of the first positioning tube 2304. Four card slots 2302 are provided on the outer side of the positioning platform, and the four card slots 2302 are respectively located outside the first outer flat platform, the second outer flat platform, the third outer flat platform, and the fourth outer flat platform. The number of the card slots 2302 is the same as that of the outer flat platforms, so that when the dial wheel 23 rotates to make the second abutting block 2202 fit with the first outer flat platform, the second outer flat platform, the third outer flat platform or the fourth outer flat platform, the self-locking member 27 is rotated to correspond to the corresponding card slot 2302, and thus the locking of the dial wheel 23 can be realized, which is convenient for installation.

[0042] Preferably, it further includes a pin 24. Refer to the appendix Figure 5 , a limiting hole 2507 is provided on the outer side of the tail-making housing 25, and a limiting sliding groove 2303 is further provided on the outer side of the positioning platform. One end of the pin 24 passes through the limiting hole 2507 and is slidably connected with the limiting sliding groove 2303. Thus, by arranging the pin 24 to pass through the tail-making housing 25, the axial connection between the dial wheel 23 and the tail-making housing 25 is realized, with a simple structure and convenient assembly; the pin 24 includes a tightly-fitted part 2401 and a rivet part arranged up and down. The tightly-fitted part 2401 corresponds to the limiting hole 2507, and the rivet part is slidably connected with the limiting sliding groove 2303. The diameter of the tightly-fitted part 2401 is larger than that of the rivet part.

[0043] Preferably, a plurality of sliding blocks 2502 are provided on the inner side of the tail-making housing 25, and a plurality of axial sliding grooves 2205 are formed on the outer side of the sliding cylinder 2204. The sliding blocks 2502 are slidably matched with the axial sliding grooves 2205. Thus, by arranging the sliding fit between the sliding blocks 2502 and the axial sliding grooves 2205, the circumferential movement of the sliding cylinder 2204 during the sliding process is avoided, ensuring the fit between the mandrel 2206 and the first connecting pipe and the second connecting pipe.

[0044] Preferably, a spring limiting hole 2507 is formed at the bottom of the sliding cylinder 2204. One end of the compression spring 26 corresponds to the spring limiting hole 2507, and the other end of the compression spring 26 abuts against the other end of the tail-making housing 25. The spring limiting hole 2507 is provided to position the compression spring 26.

[0045] Embodiment 2

[0046] A rolling curtain connection structure. Refer to the appendix Figure 6 , including a tail-making assembly 2 and a connection seat 1. An installation hole 1001 matching the connection shaft 21 is formed on the connection seat 1. The tail-making assembly 2 is detachably connected to the connection seat 1 through the connection shaft 21. By installing the tail-making assembly 2 at both ends of the rolling curtain roller and installing the connection seat 1 at the installation position, the tail-making assembly 2 can be detachably connected to the connection seat 1 through the connection shaft 21, thereby realizing the loading and unloading of the rolling curtain roller.

[0047] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A rolling curtain balance self-locking tail assembly, characterized in that It includes a dial wheel, a telescopic component, a compression spring, a tail-making housing and a self-locking component. The dial wheel is arranged at one end of the tail-making housing. The telescopic component is slidably connected to the inner side of the tail-making housing. One end of the telescopic component passes through the dial wheel. A connecting shaft is also arranged at one end of the telescopic component. The compression spring is arranged in the tail-making housing, and one end of the compression spring abuts against the telescopic component; When the dial wheel is rotated, the telescopic component drives the connecting shaft to axially slide; The self-locking component is movably connected to the tail-making housing. At least one card slot is arranged on the outer side of the dial wheel, and a locking tongue matching the card slot is arranged on the self-locking component; One end of the tail-making housing is provided with an annular mounting portion extending outwards. A boss is arranged on the annular mounting portion. A fitting hole is opened at one end of the self-locking component, and the fitting hole cooperates with the boss; A lock catch is arranged at the other end of the self-locking component, and a buckle matching the lock catch is arranged on the annular mounting portion; A limiting portion is also arranged on the annular mounting portion, and the outer side of the locking tongue is slidably matched with the limiting portion; The dial wheel includes an adjusting disc and a first positioning tube. The adjusting disc is arranged at one end of the first positioning tube, and the first positioning tube abuts against the telescopic component; The end face of the first positioning tube includes a plurality of outer inclined surfaces and a plurality of outer platform surfaces with gradually decreasing distances from the dial wheel. The outer platform surfaces are arranged between two adjacent outer inclined surfaces. The plurality of outer inclined surfaces and the plurality of outer platform surfaces are sequentially connected to form a stepped shape; The dial wheel further includes a second positioning tube. The second positioning tube is arranged inside the first positioning tube, and both the first positioning tube and the second positioning tube abut against the telescopic component; The end face of the second positioning tube includes a plurality of inner inclined surfaces and a plurality of inner platform surfaces with gradually decreasing distances from the dial wheel. The inner platform surfaces are arranged between two adjacent inner inclined surfaces. The plurality of inner inclined surfaces and the plurality of inner platform surfaces are sequentially connected to form a stepped shape; The outer inclined surface and the inner inclined surface with the same distance from the dial wheel are symmetrically arranged left and right; The telescopic component includes a core shaft and a sliding cylinder. The sliding cylinder is arranged outside the core shaft. The connecting shaft is arranged at one end of the core shaft. A gear is also arranged outside the connecting shaft. A fitting gap is arranged between the sliding cylinder and the core shaft. A first abutting block is arranged outside the core shaft, and a second abutting block is arranged inside the sliding cylinder. The first abutting block and the second abutting block respectively abut against the end face of the second positioning tube and the end face of the first positioning tube.

2. The tail assembly of a rolling shutter balance self-locking system according to claim 1, characterized in that The dial wheel further includes a positioning platform. The positioning platform is arranged at one end of the first positioning tube, and a plurality of the card slots are arranged outside the positioning platform. The plurality of card slots are respectively located outside the plurality of outer platform surfaces.

3. The tail assembly of a rolling curtain balance self-locking system according to claim 2, characterized in that, It further includes a pin. A limiting hole is arranged outside the tail-making housing, and a limiting sliding groove is also arranged outside the positioning platform. One end of the pin passes through the limiting hole and is slidably connected to the limiting sliding groove.

4. A rolling shutter balance self-locking tail assembly according to claim 1, characterized in that, A plurality of sliding blocks are arranged inside the tail-making housing, and a plurality of axial sliding grooves are opened outside the sliding cylinder. The sliding blocks are slidably matched with the axial sliding grooves.

5. A rolling curtain balance self-locking tail component according to claim 1, characterized in that, A spring limit hole is formed at the bottom of the sliding cylinder, one end of the compression spring corresponds to the spring limit hole, and the other end of the compression spring abuts against the other end of the tail-making shell.

6. A rolling curtain connection structure, characterized in that, It includes a tail-making component and a connecting seat as described in any one of claims 1-5. An installation hole matching the connecting shaft is formed on the connecting seat, and the tail-making component is detachably connected to the connecting seat through the connecting shaft.

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