CN218236929U - Tripod - Google Patents

Abstract

The utility model provides a tripod, including three groups of sliding connection's upper loop bar and lower slide bar, the side of lower slide bar sets up the recess, is provided with the rack in the recess, and the bottom of upper loop bar is equipped with the logical groove just to the recess, and the bottom of upper loop bar is provided with the dustcoat outside the logical groove, and the inside of dustcoat is equipped with the drive structure that is used for driving the rack, and the drive structure transmission has the location structure that is used for restricting the lower slide bar to shift up, the utility model discloses in the process of pulling out the upper loop bar with the lower slide bar, the drive gear and the rack of drive structure take place the meshing effect, and the rack promotes the drive gear rotation, then drives the ratchet forward rotation of location structure; after the lower sliding rod is supported, the ratchet wheel tends to rotate in the opposite direction, and the pawl prevents the ratchet wheel from rotating reversely, so that the lower sliding rod and the upper loop bar are fixed; when the upper loop bar is retracted to the lower loop bar, the pull rope pulls the pawl outwards to separate the pawl from the ratchet wheel, so that the lower loop bar can be retracted into the upper loop bar quickly, and the tripod can be adjusted conveniently and quickly by the supporting legs.

Description

Tripod

Technical Field

The utility model relates to an engineering survey and drawing technical field especially relates to a tripod.

Background

When the existing surveying and mapping tripod is used, the support legs need to be completely released, the locking bolt between the upper loop bar and the lower loop bar needs to be unscrewed firstly, then the lower loop bar needs to be completely released, and finally the locking bolt is screwed to fix the upper loop bar and the lower loop bar; when the support leg storage device is not used, the locking bolt is firstly unscrewed, the lower sliding rod retracts into the upper loop bar, and finally the locking bolt is screwed to complete the support leg storage; this solution, however, has the inconvenience of requiring the back and forth unscrewing and tightening of the locking bolt both when in use and when not in use, resulting in an insufficiently quick adjustment of the tripod.

Therefore, it is necessary to provide a tripod to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a tripod is used for solving current tripod when using and not using, all need make a round trip to unscrew and screw up the locking bolt, leads to the not swift problem inadequately of regulation of tripod.

The utility model provides a pair of tripod, including three sliding connection's of group last loop bars and lower slide bar, the side of slide bar sets up the recess down, and the recess extends along the axial of slide bar, be provided with the rack in the recess, the bottom of going up the loop bar is equipped with the logical groove just right with the recess, the bottom of going up the loop bar is provided with the dustcoat outside leading to the groove, the inside of dustcoat is provided with the drive structure who is used for driving the rack, the drive structure transmission has the location structure that is used for restricting the slide bar to shift up down.

Preferably, the driving structure comprises a rotating shaft rotatably arranged on the outer cover, a driving gear is sleeved on the rotating shaft, and the driving gear downwards penetrates through the through groove and is meshed with the rack.

Preferably, the positioning structure comprises a ratchet wheel sleeved on the rotating shaft, movable pawls are meshed on teeth of the ratchet wheel, a connecting shaft is rotatably matched at the outer ends of the pawls, and the connecting shaft is mounted on the outer cover.

Preferably, the outer back of the pawl is provided with a return spring, the other end of the return spring is arranged on the outer cover, the free end of the pawl is tied with a pull rope, the pull rope penetrates out of the outer cover, and the outer end of the pull rope is tied with a pull ring.

Preferably, the wall of the outer cover is provided with a pair of through holes which are rotatably connected with the rotating shaft, the wall of the outer cover is provided with a fine hole through which the pull rope penetrates, and the inner wall of the outer cover is provided with a support column connected with the other end of the reset spring.

Preferably, the bottom end of the lower sliding rod is provided with a supporting cone.

Preferably, the top ends of the three upper loop bars are connected with a base used for installing a level gauge.

Compared with the prior art, the utility model provides a pair of tripod has following beneficial effect:

the utility model discloses a set up mutual driven drive structure and location structure in the bottom of last loop bar, set up the rack with drive structure complex on the slide bar down simultaneously, in the in-process of pulling out the loop bar with the lower slide bar, the drive gear of drive structure takes place the meshing with the rack, the rack promotes drive gear rotatory, then drive location structure's ratchet forward rotation, after the slide bar is accomplished to pull out down, the lower slide bar supports subaerial messenger's ratchet has the trend of reverse rotation, because the design of pawl makes the ratchet unable reversal, then fix lower slide bar and last loop bar and accomplish the expansion of stabilizer blade; when withdrawing the loop bar with the lower slide bar, make it break away from with the ratchet through the outside pulling pawl of stay cord, then can retract the lower slide bar fast in the supreme loop bar for the stabilizer blade of tripod is adjusted convenient more, swift.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a single group of upper loop bars and lower slide bars of the present invention;

FIG. 3 is an enlarged schematic view of the junction between the upper loop bar and the lower loop bar of the present invention;

FIG. 4 is a schematic view of the outer cover and its attached structure;

FIG. 5 is a partial schematic view of the positioning structure of the present invention;

reference numbers in the figures: 1. an upper loop bar; 2. a lower sliding rod; 3. a groove; 4. a rack; 5. a through groove; 6. a housing; 7. a drive structure; 71. a rotating shaft; 72. a drive gear; 8. a positioning structure; 81. a ratchet wheel; 82. a pawl; 83. a connecting shaft; 84. a return spring; 85. pulling a rope; 86. a pull ring; 9. a through hole; 10. fine pores; 11. a support pillar; 12. a support cone; 13. a base.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first feature being in direct contact with the second feature, and may also include the recitation of the first feature being in contact with the second feature, but rather being in contact with the additional feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The present invention will be further described with reference to the accompanying drawings and embodiments.

In the present embodiment, as shown in fig. 1 and 2, the three sets of upper rods 1 and lower rods 2 are slidably connected, a support cone 12 is mounted at the bottom end of the lower rod 2, the support cone 12 can mount the tripod on the ground by using its tip, and the top ends of the three upper rods 1 rotate together to connect with a base 13, and a surveying and mapping level can be mounted on the base 13.

In the embodiment, as shown in fig. 3, a concave groove 3 is formed in the side surface of the lower sliding rod 2, the long edge of the groove 3 extends along the axial direction of the sliding rod, a rack 4 is installed in the groove 3 through a bolt, and the outer side surface of the rack 4 is flush with the outer surface of the lower sliding rod 2;

in the present embodiment, as shown in fig. 3, a through groove 5 is provided at the bottom end of the upper loop bar 1, and the through groove 5 penetrates through the wall of the upper loop bar 1, while the through groove 5 is disposed opposite to the groove 3;

in the embodiment, as shown in fig. 3 and 5, an outer cover 6 is arranged at the bottom end of the upper loop bar 1, the outer cover 6 is wrapped outside the through groove 5, meanwhile, a driving structure 7 for driving the rack 4 is arranged inside the outer cover 6, and the driving structure 7 is driven by a positioning structure 8 for limiting the lower slide bar 2 to move upwards;

specifically, the driving structure 7 comprises a rotatable rotating shaft 71, a driving gear 72 is sleeved on the rotating shaft 71, and the driving gear 72 downwardly passes through the through slot 5 and is meshed with the rack 4, so that when the lower sliding rod 2 moves downwardly, the driving gear 72 is rotated upwardly by the movement of the rack 4;

specifically, the positioning structure 8 comprises a ratchet 81 sleeved on the rotating shaft 71, a pawl 82 is meshed on teeth of the ratchet 81, a connecting shaft 83 is rotatably matched at the outer end of the pawl 82, and the connecting shaft 83 is mounted on the outer cover 6, so that when the lower sliding rod 2 moves downwards, the ratchet 81 rotates along with the driving gear 72, at the moment, the ratchet 81 rotates in the forward direction, meanwhile, the ratchet 81 skims over the pawl 82, and the pawl 82 does not interfere with the forward rotation of the ratchet 81;

in order to enable the pawl 82 to be always meshed with the ratchet wheel 81, a return spring 84 is arranged on the outer back surface of the pawl 82, the other end of the return spring 84 is fixed, and the pawl 82 is always meshed with the ratchet wheel 81 under the normal state of the return spring 84;

then in order to enable the pawl 82 to disengage from the ratchet 81, a pull rope 85 is tied at the free end of the pawl 82, the pull rope 85 is allowed to pass through the outer cover 6 outwards, finally a pull ring 86 is tied at the outer end of the pull rope 85, after the pull rope 85 is pulled outwards by the pull ring 86, the pawl 82 can be rotated outwards around the connecting shaft 83, and then the free end of the pawl 82 is disengaged from the ratchet 81, so that the ratchet 81 can be rotated downwards, and the whole lower sliding rod 2 can be quickly retracted into the upper sleeve rod 1;

in order to fix the inner top end of the lower sliding rod 2 in the upper loop bar 1, magnets which are mutually adsorbed can be arranged at the inner top end of the upper loop bar 1 and the top end of the lower sliding rod 2, and after the lower sliding rod 2 is completely retracted into the upper loop bar 1, the whole lower sliding rod 2 can be stabilized in the upper loop bar 1.

In this embodiment, as shown in fig. 4, a pair of through holes 9 is formed in the wall of the housing 6, and two end gaps of the rotating shaft 71 are sleeved in the through holes 9, so that the rotating shaft 71 can rotate around the through holes 9; in order to facilitate the pull rope 85 to pass through the outer cover 6, a fine hole 10 is formed in the wall of the outer cover 6, and the pull rope 85 can pass through the outer cover 6 from the fine hole 10; the inner wall of the outer cover 6 is provided with a support column 11, and the other end of the return spring 84 is sleeved on the outer end of the support column 11, so that the other end of the spring has a support point.

The utility model provides a pair of tripod's theory of operation as follows: in the process of pulling the lower sliding rod 2 out of the upper loop bar 1, the driving gear 72 of the driving structure 7 is meshed with the rack 4, the rack 4 pushes the driving gear 72 to rotate, and then the ratchet 81 of the positioning structure 8 is driven to rotate in the forward direction, after the lower sliding rod 2 is pulled out, the lower sliding rod 2 is supported on the ground, so that the ratchet 81 tends to rotate in the reverse direction, due to the design of the pawl 82, the ratchet 81 cannot rotate reversely, and then the lower sliding rod 2 and the upper loop bar 1 are fixed to complete the unfolding of the supporting legs; when the lower sliding rod 2 is retracted into the upper loop bar 1, the pawl 82 is pulled outwards through the pull rope 85 to be separated from the ratchet 81, and then the lower sliding rod 2 can be retracted into the upper loop bar 1 quickly, so that the support leg of the tripod can be adjusted more conveniently and quickly.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a tripod, includes three sliding connection's of group last loop bar (1) and lower slide bar (2), its characterized in that, the side of lower slide bar (2) sets up recess (3), and recess (3) along the axial extension of slide bar, be provided with rack (4) in recess (3), the bottom of going up loop bar (1) is equipped with logical groove (5) just right with recess (3), the bottom of going up loop bar (1) is provided with dustcoat (6) outside leading to groove (5), the inside of dustcoat (6) is provided with drive structure (7) that are used for driving rack (4), drive structure (7) transmission has location structure (8) that are used for restricting slide bar (2) to shift up down.

2. A tripod according to claim 1, wherein the driving structure (7) comprises a rotating shaft (71) rotatably arranged on the housing (6), a driving gear (72) is sleeved on the rotating shaft (71), and the driving gear (72) downwardly passes through the through slot (5) and is meshed with the rack (4).

3. A tripod according to claim 2, wherein said positioning structure (8) comprises a ratchet wheel (81) sleeved on the rotating shaft (71), the teeth of said ratchet wheel (81) are engaged with movable pawls (82), the outer ends of said pawls (82) are rotatably fitted with connecting shafts (83), and the connecting shafts (83) are mounted on the housing (6).

4. A tripod according to claim 3, wherein a return spring (84) is provided on the outer back of said pawl (82), and the other end of said return spring (84) is provided on the outer cover (6), a pull rope (85) is tied on the free end of said pawl (82), and the pull rope (85) is extended out of the outer cover (6), and a pull ring (86) is tied on the outer end of said pull rope (85).

5. A tripod according to claim 4, wherein a pair of through holes (9) rotatably connected with the rotating shaft (71) are formed in the wall of the outer cover (6), a fine hole (10) for the pull rope (85) to pass through is formed in the wall of the outer cover (6), and a supporting column (11) connected with the other end of the return spring (84) is installed on the inner wall of the outer cover (6).

6. A tripod according to claim 1, wherein the bottom end of said lower slide bar (2) is fitted with a supporting cone (12).

7. A tripod according to any one of claims 1 to 6, wherein the top ends of the three upper rods (1) are connected together to a base (13) for mounting a level.

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