阅读说明：本技术 一种防松的蜗杆传动式卡箍 (Locking worm drive formula clamp ) 是由 张其锋 曹寅 黄吕斌 于 2020-04-21 设计创作，主要内容包括：本发明公开了一种防松的蜗杆传动式卡箍,解决了现阶段蜗杆传动式卡箍防松效果不理想的问题。其技术方案要点是一种防松的蜗杆传动式卡箍,包括箍壳和钢带,还包括旋转安装于箍壳且并列布置的第一蜗杆和第二蜗杆,所述第一蜗杆的螺纹方向和所述第二蜗杆的螺纹方向相反布置；所述钢带布置有与所述第一蜗杆配合的第一齿槽和与所述第二蜗杆配合的第二齿槽；所述第一蜗杆具有第一齿轮部；所述第二蜗杆具有齿数与所述第一齿轮部相同的第二齿轮部；所述箍壳还安装有同时与所述第一齿轮部和所述第二齿轮部啮合的锁定齿轮件,所述防松的蜗杆传动式卡箍降低了蜗杆传动式卡箍锁紧后发生松动的概率。(The invention discloses a locking worm transmission type clamp, which solves the problem that the locking effect of the existing worm transmission type clamp is not ideal. The technical scheme is that the anti-loosening worm transmission type hoop comprises a hoop shell, a steel belt, a first worm and a second worm which are rotatably installed on the hoop shell and arranged in parallel, wherein the thread direction of the first worm is opposite to the thread direction of the second worm; the steel belt is provided with a first tooth groove matched with the first worm and a second tooth groove matched with the second worm; the first worm has a first gear portion; the second worm has a second gear part having the same number of teeth as the first gear part; hoop shell still install simultaneously with first gear part with the locking gear spare of second gear part meshing, locking worm drive formula clamp has reduced the probability that takes place not hard up after the locking of worm drive formula clamp.)

1. A locking worm drive type hoop comprises a hoop shell (1) and a steel belt (2), and is characterized by further comprising a first worm (3) and a second worm (4) which are rotatably mounted on the hoop shell (1) and arranged in parallel, wherein the thread direction of the first worm (3) is opposite to the thread direction of the second worm (4); the steel belt (2) is provided with a first tooth slot (25) matched with the first worm (3) and a second tooth slot (26) matched with the second worm (4); the first worm (3) has a first gear part (36); the second worm (4) has a second gear part (46) having the same number of teeth as the first gear part (36); the hoop housing (1) is further mounted with a locking gear piece (63) that meshes with both the first gear part (36) and the second gear part (46).

2. A locking worm-drive clamp according to claim 1, characterized in that the clamp housing (1) is provided with a slide seat (6) for mounting the locking gear member (63), the slide seat (6) being slidably mounted to the clamp housing (1) and having a locking position and an unlocking position; when the sliding seat (6) is in the locking position, the locking gear piece (63) is meshed with the first gear part (36) and the second gear part (46); when the sliding seat (6) is in the unlocking position, the locking gear piece (63) is separated from the position between the first gear part (36) and the second gear part (46).

3. An anti-loose worm-drive clamp according to claim 2, characterized in that the clamp housing (1) is further provided with a locking spring (54) abutting at one end against the slide seat (6) and at the other end against the clamp housing (1), the locking spring (54) urging the slide seat (6) to always have a tendency to slide from the unlocking position to the locking position.

4. The anti-loosening worm-drive type clamp according to claim 3, wherein the clamp shell (1) is provided with a slide rail (53), the slide rail (53) is provided with a limiting slide groove (531) along the length direction thereof, and the limiting slide groove (531) is provided with a limiting end surface (532) at one end far away from the clamp shell (1); the sliding seat (6) is provided with a first sliding groove (61) matched with the sliding rail (53), and the sliding seat (6) is also provided with a limiting bolt (62) of which the end part is inserted into the limiting sliding groove (531); when the end part of the limit bolt (62) abuts against the limit end surface (532), the sliding seat (6) is in the locking position.

5. A locking worm-drive clamp according to claim 2, characterized in that the slide shoe (6) is further fitted with a locking guide (65); when the sliding seat (6) is in the locked position, the locking guide (65) abuts against the first gear part (36) and the second gear part (46) so that the worm section of the first worm (3) and the worm section of the second worm (4) are pressed against the steel belt (2).

6. An anti-loosening worm-drive clamp according to claim 5, characterized in that the locking guide (65) has a guide groove (651) into which the teeth of the first gear part (36) and the teeth of the second gear part (46) are engaged, the guide groove (651) having a guide slope that is inclined downward in a direction away from the clamp housing (1).

7. A locking worm-drive clamp according to claim 4, characterised in that the slide shoe (6) is further provided with a first gear transmission comprising an even number of first transmission gears (66) connected in series to the first gear part (36) and the second gear part (46), the first gear transmission having a transmission ratio of 1; when the sliding seat (6) is in the locked position, the first gear transmission mechanism is disengaged from the first gear part (36) and the second gear part (46); when the sliding seat (6) is in the unlocking position, the first gear transmission mechanism is in transmission connection with the first gear part (36) and the second gear part (46).

8. The anti-loosening worm-drive type clamp according to claim 7, wherein the clamp shell (1) is also detachably provided with an unlocking seat (7), the unlocking seat (7) is provided with a second sliding slot (71) matched with the sliding rail (53), the top of the unlocking seat (7) is further provided with a second hole communicated with the second sliding slot (71), a ball spring plunger (72) is arranged in the second hole, and a plunger ball (723) of the ball spring plunger (72) is partially positioned in the second sliding slot (71); when the unlocking seat (7) is arranged on the sliding rail (53) and the plunger ball (723) abuts against the limiting end face (532), the sliding seat (6) is in an unlocking position.

9. An anti-loosening worm-drive clamp according to claim 8, characterized in that the worm head of the first worm (3) and the worm head of the second worm (4) each have a worm rotation hole (37); the unlocking seat (7) is provided with a first end surface (73) facing the sliding seat (6) and a second end surface (74) facing away from the sliding seat (6); the unlocking seat (7) is provided with a first through hole (751) opposite to the worm head of the first worm (3) and a second through hole (752) opposite to the worm head of the second worm (4), unlocking heads (76) are rotatably arranged in the first through hole (751) and the second through hole (752) of the unlocking seat (7), the two unlocking heads (76) are respectively provided with an unlocking lug (761) matched with the worm rotating hole (37) of the first worm (3) or the worm rotating hole (37) of the second worm (4), and one end back to the unlocking lug (761) is provided with an unlocking hole (762); the two unlocking heads (76) are in transmission connection through a second gear transmission mechanism with the transmission ratio of 1.

10. An anti-loosening worm-drive clamp according to claim 9, characterized in that the unlocking seat (7) is provided with radial ribs (741) in the second end face (74) and circumferentially distributed along the first through-hole (751), and the unlocking head (76) is provided with an indication arrow (765) in the end face provided with the worm rotation hole (37); when the indication arrow (765) points to the relief (741), the teeth of the locking gear member (63) are aligned with the teeth grooves of the first gear part (36) and the second gear part (46), so that the locking gear member (63) is simultaneously engaged with the first gear part (36) and the second gear part (46) when the sliding seat (6) is slid from the unlocking position to the locking position.

Technical Field

The invention relates to a clamp, in particular to a worm transmission type clamp.

Background

The worm drive type clamp is a commonly used clamp type, and the tightness degree of the worm drive type clamp is adjusted through the matching of a worm and a tooth groove on a steel belt.

The utility model discloses an authorization notice number is CN 207421040U's china utility model discloses a locking worm drive formula clamp, including hoop shell, worm and steel band, the worm includes the worm pole head, the spiral section and connect in my joint section of doing thoroughly and between the spiral section, be provided with the spacing turn-ups that restriction worm circumference slided and offset with the joint section on the hoop shell, the straight line annular knurl has been arranged to the surface circumference of joint section, spacing turn-ups have the card go into in the straight line annular knurl and the spacing dogtooth that the restriction worm reversed, cooperation through spacing dogtooth and straight line annular knurl, thereby realize the locking purpose of above-mentioned worm drive formula clamp.

The above prior art solutions have the following drawbacks: above-mentioned locking worm drive formula clamp leads to spacing dogtooth and straight line annular knurl to take place wearing and tearing easily at the locking in-process, causes above-mentioned locking worm drive formula clamp locking effect after the locking not ideal, still takes place to become flexible easily.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the anti-loosening worm transmission type hoop, so that the probability of loosening after the worm transmission type hoop is locked is reduced.

The above object of the present invention is achieved by the following technical solutions:

a locking worm drive type hoop comprises a hoop shell, a steel belt, a first worm and a second worm which are rotatably installed on the hoop shell and arranged in parallel, wherein the thread direction of the first worm is opposite to the thread direction of the second worm; the steel belt is provided with a first tooth groove matched with the first worm and a second tooth groove matched with the second worm; the first worm has a first gear portion; the second worm has a second gear part having the same number of teeth as the first gear part; the hoop housing is further mounted with a locking gear member simultaneously engaged with the first gear portion and the second gear portion.

According to the invention, the first worm and the second worm with opposite thread directions are set, and the steel belt is provided with the first tooth groove matched with the first worm and the second tooth groove matched with the second worm respectively, so that the worm transmission type hoop can realize locking and loosening only when the rotation directions of the first worm and the second worm are opposite. This emergence is still through setting up locking gear spare, and the first gear portion of locking gear spare and first worm meshes simultaneously with the second gear portion of second worm for first worm and the unable relative back of the body of second worm are rotatory mutually, thereby realize the locking effect of above-mentioned worm drive formula clamp.

Worm drive clamps, among other things, are commonly used in connection with hose-over-hard tubing. When the hose is locked on the hard tube by the worm-drive type clamp, the rotation angles of the first worm and the second worm can be finely adjusted simultaneously, so that the locking gear part can be installed between the first gear part and the second gear part and simultaneously meshed with the first gear part and the second gear part.

The invention is further provided that the hoop shell is provided with a sliding seat for installing the locking gear piece, and the sliding seat is slidably installed on the hoop shell and is provided with a locking position and an unlocking position; when the sliding seat is in the locking position, the locking gear piece is meshed with the first gear part and the second gear part; when the sliding seat is in the unlocking position, the locking gear piece is separated from the position between the first gear part and the second gear part.

Through adopting above-mentioned technical scheme, the operator can be through the seat that slides on the hoop shell that slides for the seat that slides from the unblock position displacement to lock the position, makes locking gear spare lock with first gear part and second gear part simultaneously, realizes the locking of above-mentioned worm drive formula clamp. When locking/unlocking is needed, the sliding seat can slide from the locking position to the unlocking position, so that the locking gear piece is separated from the first gear part and the second gear part, and the first worm and the second worm rotate oppositely/oppositely at the same time, and the locking/unlocking of the worm transmission type hoop can be realized.

The invention is further provided that the hoop housing is further provided with a locking spring, one end of the locking spring abuts against the sliding seat, the other end of the locking spring abuts against the hoop housing, and the locking spring drives the sliding seat to always have a tendency of sliding from the unlocking position to the locking position.

Through adopting above-mentioned technical scheme, locking spring makes the seat that slides have all the time for the trend of sliding to the lock position from the unblock, has reduced the probability that the seat that slides to the unblock position from the lock position under the vibration environment to the locking effect of above-mentioned worm drive formula clamp has further been promoted.

The invention is further provided that the hoop shell is provided with a slide rail, the slide rail is provided with a limiting chute along the length direction of the slide rail, and one end of the limiting chute far away from the hoop shell is provided with a limiting end face; the sliding seat is provided with a first sliding groove matched with the sliding rail, and the sliding seat is also provided with a limiting bolt with the end part inserted into the limiting sliding groove; when the end part of the limiting bolt abuts against the limiting end face, the sliding seat is located at the locking position.

Through adopting above-mentioned technical scheme, the seat that slides through the cooperation of first spout and slide rail and installs on the hoop shell, and can pass through spacing bolt butt on the spacing terminal surface of spacing spout for the seat that slides can not drop from the hoop shell under locking spring's pressure.

The invention is further provided that the sliding seat is also provided with a locking guide piece; when the sliding seat is in the locking position, the locking guide is abutted against the first gear part and the second gear part so that the worm section of the first worm and the worm section of the second worm are pressed on the steel belt.

In the production of worm-drive clamps, it is unavoidable that there is a fitting clearance between the worm and the clamp housing at the present stage. When the worm drive formula clamp with the hose locking on the hard tube and under the environment of vibration, because there is fit clearance between worm and the hoop shell, the worm drive formula clamp will take place to become flexible.

The locking guide part utilizes a fit clearance between the worm and the hoop shell, when the sliding seat in the worm transmission type hoop is in a locking position, the locking guide part abuts against the bottoms of the first gear part of the first worm and the second gear part of the second worm, so that the worm section of the first worm and the worm section of the second worm are both inclined downwards, the worm section of the first worm and the worm section of the second worm are both pressed on the first tooth groove and the second tooth groove of the steel belt, meshing among the first worm, the second worm and the steel belt is realized, the probability of loosening of the worm transmission type hoop is further reduced, and the anti-loosening effect of the worm transmission type hoop is improved.

The present invention is further configured such that the locking guide has a guide groove into which the convex teeth of the first gear part and the convex teeth of the second gear part are fitted, the guide groove having a guide slope that is inclined downward in a direction away from the ferrule case.

By adopting the technical scheme, the locking guide part is provided with the guide groove for the convex teeth of the first gear part and the second gear part to be clamped into, so that the convex teeth of the first gear part and the convex teeth of the second gear part are abutted against the guide inclined plane, and the first worm and the second worm are inclined. The guide effect of the locking guide piece is ideal. Compared with the direct adoption of the mode that the guide inclined surfaces abut against the first gear part and the second gear part, the damage of the locking guide to the first gear part and the second gear part is smaller.

The invention is further arranged that the sliding seat is also provided with a first gear transmission mechanism, the first gear transmission mechanism comprises an even number of first transmission gears which are sequentially connected with the first gear part and the second gear part, and the transmission ratio of the first gear transmission mechanism is 1; when the sliding seat is in the locking position, the first gear transmission mechanism is disengaged from the first gear part and the second gear part; when the sliding seat is located at the unlocking position, the first gear transmission mechanism is in transmission connection with the first gear part and the second gear part.

By adopting the technical scheme, when the worm transmission type hoop needs to be unlocked, the sliding seat slides to the unlocking position, and the first gear transmission mechanism is connected between the first gear part and the second gear part, so that an operator only needs to rotate the first worm or the second worm, and the rest of the worms can move oppositely/reversely, and the operation of locking and unlocking the worm transmission type hoop is facilitated.

The invention is further provided that the hoop shell can be also detachably provided with an unlocking seat, the unlocking seat is provided with a second sliding chute matched with the sliding rail, the top of the unlocking seat is also provided with a second hole communicated with the second sliding chute, a ball head spring plunger is arranged in the second hole, and the ball head spring plunger is positioned in the second sliding chute; when the unlocking seat is arranged on the sliding rail and the plunger ball is abutted against the limiting end face, the sliding seat is in an unlocking position.

Through adopting above-mentioned technical scheme, when needs lock or the unblock to above-mentioned worm transmission formula clamp, install the unblock seat on the slide rail of hoop shell to the seat that will slide removes towards the direction of hoop shell, when the plunger ball joint of unblock seat at the second spout and with spacing terminal surface butt, the seat that slides is in the unblock position, first gear drive connects in first gear portion and second gear portion, make only need rotate first worm or second worm, can accomplish the unblock or the locking of above-mentioned worm transmission formula clamp. The setting of above-mentioned unblock seat conveniently switches the seat that slides to unblock position to the operation of conveniently locking or unblock worm transmission formula clamp.

The invention is further provided that the worm head of the first worm and the worm head of the second worm each have a worm rotation hole; the unlocking seat is provided with a first end face facing the sliding seat and a second end face back to the sliding seat; the unlocking seat is provided with a first through hole opposite to the worm head of the first worm and a second through hole opposite to the worm head of the second worm, unlocking heads are rotatably arranged in the first through hole and the second through hole of the unlocking seat respectively, the two unlocking heads are provided with unlocking lugs matched with the worm rotating hole of the first worm or the worm rotating hole of the second worm respectively, and an unlocking hole is arranged at one end back to the unlocking lugs; the two unlocking heads are in transmission connection through a second gear transmission mechanism with the transmission ratio of 1.

Through adopting above-mentioned technical scheme, set up second gear drive on the unblock seat for the moment of torsion on the first worm can be transmitted through first gear drive and second gear drive simultaneously, has reduced the load capacity that first gear drive bore, helps increasing the locking power of above-mentioned worm transmission formula clamp.

The invention is further arranged that the unlocking seat is arranged in the second end surface and is uniformly provided with radial convex lines along the circumferential direction of the first through hole, and the unlocking head is provided with an indicating arrow on the end surface provided with the worm rotating hole; when the indication arrow points to the convex lines, the convex teeth of the locking gear piece are opposite to the tooth grooves of the first gear part and the second gear part, so that the locking gear piece is meshed with the first gear part and the second gear part simultaneously when the sliding seat slides from the unlocking position to the locking position.

By adopting the technical scheme, when the indication arrow points to the convex line on the unlocking seat, namely the convex teeth of the locking gear part are just opposite to the tooth grooves of the first gear part and the second gear part, when the sliding seat slides to the locking position from the unlocking position, the locking gear part can be meshed with the first gear part and the second gear part, so that the situation that the sliding seat cannot normally slide to the locking position due to interference of the locking gear part, the first gear part and the second gear part in the process that the sliding seat slides to the locking position from the unlocking position is avoided.

In summary, the invention includes at least one of the following beneficial technical effects:

1. a locking worm drive type hoop comprises a hoop shell and a steel belt, wherein a first worm and a second worm are arranged on the hoop shell in parallel, the steel belt is provided with a first tooth groove and a second tooth groove, the first worm is provided with a first gear part, the second worm is provided with a second gear part, the hoop shell is further provided with a locking gear part meshed with the first gear part and the second gear part, and the locking gear part is meshed with the first gear part of the first worm and the second gear part of the second worm simultaneously so that the first worm and the second worm cannot rotate oppositely/oppositely and accordingly the locking effect of the worm drive type hoop is achieved;

2. the hoop shell is provided with a sliding seat in a sliding manner, and the hoop shell is also provided with a locking spring which enables the sliding seat to always have the tendency of sliding from an unlocking position to a locking position, so that the anti-loosening effect of the worm transmission type hoop is improved, and the switching between the locking state and the unlocking state of the worm transmission type hoop is facilitated;

3. when the sliding seat is positioned at the locking position, the locking guide piece abuts against the first gear part and the second gear part so that the worm sections of the first worm and the second worm are pressed on the tooth grooves of the steel belt, and therefore the locking capacity of the worm transmission type hoop is improved;

4. through setting up the unblock seat for when needs unblock/lock above-mentioned worm transmission formula clamp, install the unblock seat on the slide rail of hoop shell, make the seat that slides to the unblock position from the lock position, thereby made things convenient for rotatory first worm or second worm, realized the locking or the unblock of above-mentioned worm transmission formula clamp.

Drawings

FIG. 1 is a schematic structural view of example 1.

Fig. 2 is a schematic structural view of the first worm and the second worm in embodiment 1.

Fig. 3 is a schematic view showing the fitting of the upper band housing, the lower band plate, the first worm, and the second worm in embodiment 1.

Fig. 4 is a schematic structural view of the upper hoop casing and the lower hoop plate in an explosive state in example 1.

Fig. 5 is a schematic view of the bottom structure of the upper shell in example 1.

Fig. 6 is a schematic view showing the fitting of the ferrule housing and the slide holder in embodiment 1.

Fig. 7 is a schematic structural view of the locking seat in embodiment 1.

Fig. 8 is a schematic cross-sectional view of the sliding seat and the slide rail in embodiment 1.

Fig. 9 is an enlarged view at a in fig. 8.

Fig. 10 is a schematic view showing the engagement of the locking gear member and the sliding seat in an explosive state in embodiment 1.

Fig. 11 is a schematic structural view of the locking gear member and the locking guide in embodiment 1.

FIG. 12 is a schematic structural view of embodiment 2.

Fig. 13 is a schematic bottom structure view of the slide seat in embodiment 2.

Fig. 14 is a schematic view of the sliding seat and the first gear transmission mechanism in an explosion state in the embodiment 2.

FIG. 15 is a schematic structural view of example 3.

Fig. 16 is a schematic view showing the engagement between the unlocking seat and the slide rail in embodiment 3.

Fig. 17 is a schematic structural view of the unlocking receptacle in an exploded state in embodiment 3.

Fig. 18 is a schematic structural view of an unlocking head in embodiment 3.

Fig. 19 is a schematic structural view of an unlocking seat in embodiment 3.

In the figure: 1. a ferrule housing; 11. an upper hoop shell; 111. a clip sheet; 112. a first mounting portion; 1121. a first card hole; 1122. a first accommodating cavity; 113. a second mounting portion; 1131. a second card hole; 1132. a second accommodating cavity; 12. a lower hoop plate; 121. a clamping hole; 13. installing a channel; 2. a steel belt; 21. a fixed section; 22. an active segment; 23. a fixed end; 24. a movable end; 25. a first tooth slot; 26. a second tooth slot; 3. a first worm; 31. a first stopper; 32. a first worm section; 33. a first connection section; 34. a first worm head; 35. a first ring groove; 36. a first gear portion; 37. a worm rotation hole; 4. a second worm; 41. a second limiting head; 42. a second worm section; 43. a second connection section; 44. a second worm head; 45. a second ring groove; 46. a second gear portion; 5. a locking seat; 51. a first caulking groove; 52. a second caulking groove; 53. a slide rail; 531. a limiting chute; 532. a limiting end face; 54. a locking spring; 6. a sliding seat; 61. a first chute; 62. a limit bolt; 63. a lock gear member; 631. locking the bottom plate; 632. locking the half gear; 6321. locking the convex teeth; 64. a locking groove; 65. a locking guide; 651. a guide groove; 66. a first drive gear; 661. a drive shaft; 67. a containing groove; 671. mounting grooves; 672. a rotating tank; 673. mounting a plate; 7. an unlocking seat; 71. a second chute; 72. a ball spring plunger; 721. a plunger housing; 722. a plunger spring; 723. a plunger ball; 73. a first end face; 74. a second end face; 741. a relief pattern; 751. a first through hole; 752. a second through hole; 753. a limit convex ring; 76. an unlocking head; 761. unlocking the bump; 762. unlocking the hole; 763. a limiting ring groove; 764. a third gear portion; 765. an arrow is indicated; 77. a second transmission gear; 78. an upper housing; 79. a lower housing.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.