Clamping structure

Abstract

The utility model relates to a clamping structure which comprises a driving source, an output shaft of the driving source is connected with a shaft body, and the shaft body is provided with a first limiting block, a second limiting block, a third limiting block and a fourth limiting block. By arranging a first limiting block, a second limiting block, a third limiting block and a fourth limiting block, when the first iron ring needs to be clamped, a driving source drives a shaft body to enable the first limiting block to be clamped with the first iron ring; when the second iron ring needs to be clamped, the driving source drives the shaft body to enable the second limiting block to be clamped with the second iron ring; when the first iron ring and the second iron ring need to be clamped, the driving source drives the shaft body to enable the third limiting block and the fourth limiting block to be clamped with the first iron ring and the second iron ring correspondingly. Single iron rings or two iron rings can be clamped at the same time through a single driving source, correspondingly, single belt pulley rotation or two belt pulley simultaneous rotation can be achieved, and finally the purpose of opening and closing a single-side curtain or clamping curtains on the two sides at the same time is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission structures, and particularly relates to a clamping structure. Background Art

[0002] In the prior art, a pair of curtains can be synchronously opened and closed in opposite directions through two tracks at the same horizontal height, and the curtains on both sides can be opened and closed separately. This solves the technical problem that the opening position of a single curtain is only in the middle or fixed on one side. In the prior art, a single motor, curtain tracks, and two belt pulleys are adopted. The output shaft of the single motor is connected to two clutch mechanisms to control the two belt pulleys, that is, the clutch mechanism needs to switch back and forth between the disengaged state and the engaged state.

[0003] The clutch mechanism includes a clutch part and an iron ring. When the clutch part and the iron ring rotate together, the clutch mechanism is in the disengaged state. When relative rotation occurs between the clutch part and the iron ring, the clutch mechanism is in the engaged state. The disengaging or engaging function of the clutch mechanism can be realized by restricting the iron ring to enable relative rotation of the clutch part.

[0004] For the upper and lower double-track curtains, to separately control the movement of the curtains on one track, two clutch mechanisms need to be provided, one clutch corresponding to one track respectively. Two clamping parts are required to control the two clutches, and two driving sources are needed for the two corresponding clamping parts, resulting in a high cost. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is the problem that two clutch mechanisms in the prior art need to be controlled by two clamping parts, and two driving sources are required for the two clamping parts, resulting in a high cost.

[0006] The utility model solves the above technical problem through the following technical solution: a clamping structure, which includes a driving source. The output shaft of the driving source is connected to a shaft body. The shaft body is provided with a first limiting block at a first horizontal height, a second limiting block at a second horizontal height, a third limiting block at the first horizontal height, and a fourth limiting block at the second horizontal height respectively. The third limiting block and the fourth limiting block are axially aligned along the shaft body, and the first limiting block and the second limiting block are axially misaligned along the shaft body.

[0007] Specifically, the first limiting block and the third limiting block are circumferentially spaced along the shaft body at the first horizontal height; the second limiting block and the fourth limiting block are circumferentially spaced along the shaft body at the second horizontal height.

[0008] Specifically, a first fixing disk and a second fixing disk are fixedly connected to the shaft body. The first limiting block and the third limiting block are formed on the first fixing disk, and the second limiting block and the fourth limiting block are formed on the second fixing disk.

[0009] Specifically, the shaft body includes a first shaft body and a second shaft body. The first fixing disk is fixedly connected to the first shaft body, and the second fixing disk is fixedly connected to the second shaft body. The driving source is a dual-axis motor, and the output shafts of the dual-axis motor are respectively connected to the first shaft body and the second shaft body.

[0010] Specifically, a disk body is fixedly connected to the shaft body. The first limiting block, the second limiting block, the third limiting block, and the fourth limiting block are all formed on the disk body.

[0011] Specifically, teeth are provided on the outer circles of the first limiting block and the third limiting block and / or the second limiting block and the fourth limiting block.

[0012] Specifically, a first included angle α is provided between the first limiting block and the third limiting block, and a second included angle β is provided between the second limiting block and the fourth limiting block. The range of the first included angle α is 45° to 157.5°, and the range of the second included angle β is 45° to 157.5°.

[0013] Specifically, the first included angle α is 120°, and the second included angle β is 120°.

[0014] Specifically, a first bearing is coaxially connected to the top of the shaft body.

[0015] Specifically, the shaft body is detachably connected to the output shaft of the driving source.

[0016] On the basis of conforming to the common knowledge in the art, the above preferred conditions can be combined arbitrarily to obtain various preferred examples of the present invention.

[0017] The positive and progressive effects of the present utility model are as follows: In the prior art, the driving member is fixedly connected to the iron ring. By providing a first limiting block, a second limiting block, a third limiting block, and a fourth limiting block, the first limiting block and the third limiting block are at a first horizontal height, corresponding to the first driving member at the first horizontal height, while the second limiting block and the fourth limiting block are at a second horizontal height, corresponding to the second driving member at the second horizontal height. When it is necessary to engage the first driving member, the driving source drives the shaft body so that the first limiting block engages with the first driving member. When it is necessary to engage the second driving member, the driving source drives the shaft body so that the second limiting block engages with the second driving member. When it is necessary to engage the first driving member and the second driving member, the driving source drives the shaft body so that the third limiting block and the fourth limiting block respectively engage with the first driving member and the second driving member. Using a single driving source can complete the engagement of a single driving member or two driving members simultaneously, correspondingly achieving the rotation of a single pulley or the simultaneous rotation of two pulleys, and ultimately achieving the purpose of opening and closing a single-sided curtain or simultaneously engaging two-sided curtains. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is a structural diagram of a clamping structure of the present utility model.

[0019] Figure 2 FIG. is a structural diagram of the first fixing plate and the second fixing plate of the present utility model.

[0020] Figure 3 FIG. is a structural diagram of the driving source of the present utility model.

[0021] Figure 4 is Figure 1 top view of.

[0022] Figure 5 is Figure 2 front view of.

[0023] Description of reference numerals: 1, driving source; 2, shaft body; 3, first limiting block; 4, second limiting block; 5, third limiting block; 6, fourth limiting block; 7, first fixing plate; 8, second fixing plate; 9, teeth; 10, first bearing; 11, fixing part; 12, output shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way serves as a limitation to the present utility model and its application or use. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] It should be noted that in the claims and the specification of this patent, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one" does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0026] The present utility model provides a clamping structure, as Figures 1-5 shown, comprising a drive source 1, the output shaft 12 of the drive source 1 is connected with a shaft body 2, the shaft body 2 is provided with a first limiting block 3 at a first horizontal height H1, a second limiting block 4 at a second horizontal height H2, a third limiting block 5 at the first horizontal height H1 and a fourth limiting block 6 at the second horizontal height H2 respectively. Specifically, the third limiting block 5 and the fourth limiting block 6 are axially aligned along the shaft body 2, and the first limiting block 3 and the second limiting block 4 are axially arranged in a staggered manner along the shaft body 2.

[0027] In the prior art, the clutch mechanism of a curtain mostly adopts a mechanical clutch mode. Among them, the clutch mechanism includes a driving member, an iron ring, a magnetic bead, a clutch member, a driven member and a groove formed on the driven member. The iron ring is fixed on the driving member, and the groove is adapted to the magnetic bead to achieve the clutch function;

[0028] When the rotation of the iron ring is restricted, that is, the rotation of the driving member is restricted. At this time, when the clutch member rotates, it will drive the driven member to rotate through the magnetic bead, and the clutch member and the driven member are engaged with each other;

[0029] When the rotation of the iron ring is not restricted, that is, the driving member can also rotate. At this time, when the clutch member rotates, the clutch member will abut against the magnetic bead, and drive the iron ring and the driving member to rotate simultaneously through the adsorption force between the magnetic bead and the iron ring. The adsorption force between the magnetic bead and the iron ring is greater than the gravity of the iron ring and the driving member;

[0030] During this process, the driving member and the driven member are always disengaged from each other.

[0031] As Figure 1 , 2 , shown in Figure 5, the drive source 1 is a single-output motor, and the output shaft 12 drives the shaft body 2 to rotate by rotation. In this application, there are two clutch members, correspondingly two driving members, two driven members and two iron rings.

[0032] The first limiting block 3 is at the first horizontal height H1. In order to make the first limiting block 3 more easily limit the rotation of the first iron ring, the first driving member is fixedly connected to the first iron ring. By limiting the first driving member with the first limiting block 3, the rotation of the first iron ring can be limited, and the first driving member is at the first horizontal height H1. In the initial state, the first limiting block 3 does not contact the first driving member, and after the first limiting block 3 and the first driving member come into contact, the rotation of the first driving member can be limited. Similarly, the second limiting block 4 is at the second horizontal height H2, the second driving member is fixedly connected to the second iron ring, and the second driving member is also at the second horizontal height H2. In the initial state, the second limiting block 4 does not contact the second driving member, and after the second limiting block 4 and the second driving member come into contact, the rotation of the second driving member can be limited. The driving source 1 can also drive the shaft body 2 to make the third limiting block 5 and the fourth limiting block 6 engage with the first driving member and the second driving member respectively. By using a single driving source 1, the simultaneous engagement of a single driving member or two driving members can be completed, and correspondingly, a single pulley can rotate or two pulleys can rotate simultaneously, and finally the purpose of opening and closing a single-side curtain or simultaneously engaging two-side curtains can be achieved.

[0033] For the above contact and engagement mode, the first driving member and / or the second driving member can be clamped by a claw. The first limiting block 3, the second limiting block 4, the third limiting block 5, and the fourth limiting block 6 can be claws, and the first driving member and / or the second driving member can be clamped by a clamping method.

[0034] As Figure 2 shown, with the above structure, the third limiting block 5 and the fourth limiting block 6 are axially aligned along the shaft body 2, that is, they are in the same vertical plane along the shaft body 2. In this way, when the driving source 1 drives the shaft body 2 to rotate, no matter how many angles it rotates, the third limiting block 5 and the fourth limiting block 6 rotate the same angle, and the two are always in the same vertical plane up and down. Correspondingly, the first driving member and the second driving member are also axially aligned. When the engaging structure needs to engage with the first driving member and the second driving member simultaneously, only the third limiting block 5 and the fourth limiting block 6 need to cooperate with the first driving member and the second driving member respectively at the same time.

[0035] When the first limiting block 3 needs to cooperate with the first driving member, the second limiting block 4 does not cooperate with the first driving member, and vice versa. Therefore, the first limiting block 3 and the second limiting block 4 are axially misaligned along the shaft body 2. Ensuring that the first limiting block 3 and the second limiting block 4 are axially misaligned in this way can enable the first limiting block 3 to cooperate with the first driving member alone, or the second limiting block 4 to cooperate with the second driving member alone.

[0036] As Figure 5As shown, specifically, the first limiting block 3 and the third limiting block 5 are circumferentially spaced along the shaft body 2 at a first horizontal height H1; the second limiting block 4 and the fourth limiting block 6 are circumferentially spaced along the shaft body 2 at a second horizontal height H2.

[0037] Since the first limiting block 3 and the third limiting block 5 need to cooperate with the first driving member respectively in different required modes, the first limiting block 3 and the third limiting block 5 are circumferentially spaced along the shaft body 2 at the same height; correspondingly, the second limiting block 4 and the fourth limiting block 6 need to cooperate with the second driving member respectively in different required modes, so the second limiting block 4 and the fourth limiting block 6 are circumferentially spaced along the shaft body 2 at the same height. In this way, it can ensure that the driving source 1 is preset with a corresponding rotation angle, that is, the user can select that the engaging structure cooperates with the first driving member, cooperates with the second driving member, or cooperates with the first driving member and the second driving member at the same time. Using a single driving source 1 can complete the cooperation of the above three methods, and compared with the existing situation that two driving sources 1 are required, the cost is lower.

[0038] As Figure 2 、 5 As shown, specifically, a first fixing disk 7 and a second fixing disk 8 are fixedly connected to the shaft body 2. The first limiting block 3 and the third limiting block 5 are formed on the first fixing disk 7, and the second limiting block 4 and the fourth limiting block 6 are formed on the second fixing disk 8.

[0039] A first fixing disk 7 and a second fixing disk 8 are coaxially connected to the shaft body 2. The first fixing disk 7 is at the first horizontal height H1, and the second fixing disk 8 is at the second horizontal height H2. The first limiting block 3 and the third limiting block 5 are circumferentially spaced along the first fixing disk 7; the second limiting block 4 and the fourth limiting block 6 are spaced along the second fixing disk 8.

[0040] Since the first limiting block 3, the second limiting block 4, the third limiting block 5, and the fourth limiting block 6 often come into contact with the first driving member and the second driving member, directly setting the above limiting blocks on the shaft body 2 will reduce the service life of the shaft body 2. Therefore, the first fixing disk 7 and the second fixing disk 8 are provided on the shaft body 2. The first limiting block 3 and the third limiting block 5 are formed on the first fixing disk 7; the second limiting block 4 and the fourth limiting block 6 are formed on the second fixing disk 8, which can reduce the wear rate of the shaft body 2.

[0041] In one embodiment, the shaft body 2 includes a first shaft body and a second shaft body. The first fixing disk 7 is fixedly connected to the first shaft body, and the second fixing disk 8 is fixedly connected to the second shaft body. The driving source 1 is a dual-axis motor, and the output shafts 12 of the dual-axis motor are respectively connected to the first shaft body and the second shaft body.

[0042] The driving source is a biaxial motor (not shown in the figure). The two output ends of the biaxial motor are respectively connected with a first shaft body and a second shaft body. The first shaft body and the second shaft body are located on both sides of the biaxial motor. The first fixing plate 7 is fixedly connected to the first shaft body, and the second fixing plate 8 is fixedly connected to the second shaft body, which can adapt to the situations of the first height and the second height where the first driving member and the second driving member are located at different positions.

[0043] In another embodiment, a disk body is fixedly connected to the shaft body, and the first limiting block 3, the second limiting block 4, the third limiting block 5 and the fourth limiting block 6 are all formed on the disk body.

[0044] When the driving source is a single-axis output motor, the motor is connected to the shaft body 2, and a disk body (not shown in the figure) is connected to the shaft body 2. The first limiting block 3, the second limiting block 4, the third limiting block 5 and the fourth limiting block 6 can be formed along the side wall of the disk body. Among them, the third limiting block 5 and the fourth limiting block 6 are axially aligned along the shaft body 2, and the first limiting block 3 and the second limiting block 4 are axially misaligned along the shaft body 2.

[0045] The setting of using a single disk body can reduce the number of disk bodies and reduce the assembly process.

[0046] Specifically, teeth 9 are provided on the outer circles of the first limiting block 3 and the third limiting block 5 and / or the second limiting block 4 and the fourth limiting block 6.

[0047] The way of using the teeth 9 to interleave and cooperate with the teeth on the first driving member and the second driving member can better engage the first driving member and / or the second driving member. And the teeth 9 are relatively easy to manufacture and produce.

[0048] Such as Figure 4 As shown, specifically, a first included angle α is provided between the first limiting block 3 and the third limiting block 5, and a second included angle β is provided between the second limiting block 4 and the fourth limiting block 6; the range of the first included angle α is 45~157.5°, and the range of the second included angle β is 45~157.5°.

[0049] Specifically, the first included angle α is 120°, and the second included angle β is 120°.

[0050] Through the above settings of the first included angle α and the second included angle β, it can be ensured that the first included angle α and the second included angle β do not overlap in the axial projection along the shaft body 2. So as to ensure that the rotation angle of the rotating motor can be reasonably preset to select the corresponding engagement mode. Preferably, the first included angle α and the second included angle β can divide the disk body, the first disk body or the second disk body into three equal parts, that is, it is relatively easy to set three modes of cooperating with the first driving member, cooperating with the second driving member, or cooperating with the first driving member and the second driving member at the same time. The switching between each mode only needs to preset the motor to rotate 120°, which is relatively convenient.

[0051] Specifically, a first bearing 10 is coaxially connected to the top of the shaft body 2, and two fixing parts 11 are provided on the outer shell of the driving source 1.

[0052] By providing the above-mentioned first bearing 10, the concentricity of the shaft body 2 with the first fixing disk 7, the second fixing disk 8 and / or the disk body can be increased. The provision of the fixing part 11 enables the driving source 1 to be fixedly installed through the fixing part. The fixing part is preferably two fixing ears, and a connecting member such as a screw can pass through the fixing ears.

[0053] Specifically, the shaft body 2 is detachably connected to the output shaft 12 of the driving source 1.

[0054] The output shaft 12 of the driving source 1 and the shaft body 2 are connected by insertion.

[0055] After considering the specification and practice disclosed herein, those skilled in the art will readily conceive of other embodiments of the present invention. This application is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include known common knowledge or conventional technical means in the technical field not disclosed by the present invention. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present invention are pointed out by the following claims.

[0056] It should be understood that the present invention is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A clamping structure, characterized in that: It includes a driving source (1), the output shaft of the driving source (1) is connected to a shaft body (2), and on the shaft body (2), there are a first limiting block (3) at a first horizontal height (H1), a second limiting block (4) at a second horizontal height (H2), a third limiting block (5) at the first horizontal height (H1), and a fourth limiting block (6) at the second horizontal height (H2); the third limiting block (5) and the fourth limiting block (6) are axially aligned along the shaft body (2), and the first limiting block (3) and the second limiting block (4) are axially misaligned along the shaft body (2).

2. The snap-fit structure according to claim 1, wherein: The first limiting block (3) and the third limiting block (5) are circumferentially spaced along the shaft body (2) at the first horizontal height (H1); the second limiting block (4) and the fourth limiting block (6) are circumferentially spaced along the shaft body (2) at the second horizontal height (H2).

3. The snap-fit structure according to claim 2, wherein: A first fixed disk (7) and a second fixed disk (8) are fixedly connected to the shaft body (2), the first limiting block (3) and the third limiting block (5) are formed on the first fixed disk (7), and the second limiting block (4) and the fourth limiting block (6) are formed on the second fixed disk (8).

4. A snap-fit structure according to claim 3, characterized in that: The shaft body (2) includes a first shaft body and a second shaft body, the first fixed disk (7) is fixedly connected to the first shaft body, the second fixed disk (8) is fixedly connected to the second shaft body, the driving source (1) is a double-shaft motor, and the output shafts of the double-shaft motor are respectively connected to the first shaft body and the second shaft body.

5. The snap-fit structure according to claim 2, characterized in that: A disk body is fixedly connected to the shaft body (2), and the first limiting block (3), the second limiting block (4), the third limiting block (5), and the fourth limiting block (6) are all formed on the disk body.

6. The snap-fit structure according to claim 3 or 5, characterized in that: Tooth teeth are provided on the outer circles of the first limiting block (3) and the third limiting block (5) and / or the second limiting block (4) and the fourth limiting block (6).

7. A snap-fit structure according to claim 3 or 5, characterized in that: A first included angle α is provided between the first limiting block (3) and the third limiting block (5), and a second included angle β is provided between the second limiting block (4) and the fourth limiting block (6); the range of the first included angle α is 45° to 157.·5°, and the range of the second included angle β is 45° to 157.5°.

8. A snap-fit structure according to claim 7, characterized in that: The first included angle α is 120°, and the second included angle β is 120°.

9. The snap-fit structure according to claim 1, wherein: A first bearing (10) is coaxially connected to the top of the shaft body (2).

10. A snap-fit structure according to claim 1, characterized in that: The shaft body (2) is detachably connected to the output shaft of the driving source (1).

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