Search

CN-121977048-A - Tensioning device

CN121977048ACN 121977048 ACN121977048 ACN 121977048ACN-121977048-A

Abstract

The invention discloses a tensioning device which comprises a seat body and a handle which can be rotatably connected, wherein a rotating shaft and a ratchet mechanism are arranged at the joint of the handle and the seat body, the seat body comprises a base plate, a first side wall and a second side wall, a limiting groove is formed in the second side wall, a mounting groove capable of enabling a binding belt to be axially arranged in the axial direction is formed in the first end of the rotating shaft, and the first end of the rotating shaft is abutted to the limiting groove. The beneficial effect of this patent is, because set up the mounting groove that can supply the bandage to pack into along the axial in the axis of rotation, so the bandage no longer need penetrate the mounting groove from the tip in the middle of, but can directly pack into the mounting groove in the axial with the mode that the side direction penetrated in the arbitrary length position of bandage to the action of frequent stretching strap has been omitted, availability factor promotes greatly. The mounting groove is always in an open state, the belt can be threaded laterally all the time, the use mode is simpler, the first end of the rotating shaft is abutted to the limiting groove, so that the first end of the rotating shaft can be limited by the limiting groove, the rotating shaft can bear larger pulling force, and the whole seat body cannot deform.

Inventors

  • ZHOU JING
  • YANG XIANWEI
  • LI CHUNZHI
  • MA FENGQUAN

Assignees

  • 泰州润杰物流安全装备科技有限公司

Dates

Publication Date
20260505
Application Date
20260318

Claims (10)

  1. 1. The tensioning device comprises a base (100) and a handle (200) which can be rotationally connected, wherein a rotating shaft (300) and a ratchet mechanism (400) are arranged at the joint of the handle (200) and the base (100), the handle (200) can be rotated to drive the ratchet mechanism (400) to rotate, and the ratchet mechanism (400) can drive the rotating shaft (300) to rotate, and is characterized in that: The base body (100) comprises a base plate (101), a first side wall (102) and a second side wall (103), wherein the first side wall (102) and the second side wall (103) are fixedly arranged on the base plate (101) in a relative mode, a first shaft hole (104) is formed in the first side wall (102), and a limit groove (105) is formed in the second side wall (103); The rotating shaft (300) comprises a first end (301) and a second end (302), a mounting groove (303) capable of being used for a binding belt (500) to be axially arranged in along the rotating shaft (300) is formed in the first end (301) of the rotating shaft (300) along the axial direction, the first end (301) of the rotating shaft (300) is abutted to the limiting groove (105), and the second end (302) of the rotating shaft (300) is arranged on the first shaft hole (104) of the first side wall (102) in a penetrating mode.
  2. 2. The tensioning device according to claim 1, characterized in that the base plate (101), the first side wall (102) and the second side wall (103) are of an integral structure, the mounting groove (303) divides the rotation shaft (300) into two approximate semi-cylindrical portions (304), and an abutting area of the rotation shaft (300) and the limiting groove (105) is smaller than or equal to an arc area of the semi-cylindrical portions (304).
  3. 3. The tensioning device according to claim 1, characterized in that the upper edge of the second side wall (103) presents an approximately L-shaped surface (1031), the limiting groove (105) is located at the bottom end of the L-shaped surface (1031), the limiting groove (105) comprises a bearing portion (1051) and a bearing portion (1052), the bearing portion (1052) is used for bearing the first end (301) of the rotating shaft (300), and the bearing portion (1051) is used for blocking the first end (301) of the rotating shaft (300) from moving away from the center of the base (100).
  4. 4. The tensioning device according to claim 1, characterized in that the ratchet mechanism (400) comprises a unidirectional ratchet (401) and a movable pawl (402), the unidirectional ratchet (401) being fixedly mounted on the second end (302) of the rotation shaft (300), the movable pawl (402) being elastically mounted on the handle (200), one end of the movable pawl (402) cooperating with a ratchet (405) of the unidirectional ratchet (401); The handle (200) is provided with an avoidance slot (201), the other end of the movable pawl (402) is sleeved with a first spring (403) and corresponds to the avoidance slot (201), The movable pawl (402) is further provided with a pull rod (4021), and the pull rod (4021) is pulled to enable the first spring (403) to change elastically, so that the movable pawl (402) and the ratchet (405) can be switched between a matched state and a separated state.
  5. 5. The tightening device according to claim 4, wherein a travel groove (1021), a first locking notch (1022) and a second locking notch (1023) are provided on the outer edge of the first shaft hole (104) of the first side wall (102), the first locking notch (1022) and the second locking notch (1023) are respectively located at two ends of the travel groove (1021), the radius of a virtual circle located at the travel groove (1021) is smaller than the radius of a virtual circle located at the ratchet teeth (405) of the unidirectional ratchet wheel (401), the radius of a virtual circle located at the first locking notch (1022) is larger than the radius of a virtual circle located at the ratchet teeth (405) of the unidirectional ratchet wheel (401), the virtual circle located at the second locking notch (1023) coincides with the virtual circle located at the travel groove (1021), the virtual circle located at the first locking notch (1022) and the second locking notch (1023) coincide with each other, the ratchet teeth (402) are kept in a movable state (402) by the rotation angle of the ratchet teeth (402) when the first locking notch (1022) coincides with the ratchet teeth (405), the second locking opening (1023) locks the movable pawl (402) so as to keep the movable pawl (402) and the ratchet (405) in a matched state.
  6. 6. The tensioning device according to claim 5, characterized in that the first side wall (102) is provided with a caulking groove (1024), a stopping pawl (404) is arranged in the caulking groove (1024), the stopping pawl (404) is elastically installed in the caulking groove (1024) through a second spring (4044), a locking boss (202) is arranged below the handle (200), one end of the handle (200) close to the rotating shaft (300) is provided with an arc-shaped flange (203), when the handle (200) is rotated to enable the movable pawl (402) to fall into the first locking opening (1022), the arc-shaped flange (203) can abut against the stopping pawl (404) from one direction to enable the second spring (4044) to elastically change so that the stopping pawl (404) and the ratchet (405) are switched from the matched state to the separated state, and when the handle (200) is rotated to enable the movable pawl (402) to fall into the second locking opening (1023), the locking boss (202) can abut against the other direction to enable the stopping pawl (404) to be kept in the matched state and the ratchet (405).
  7. 7. A tensioning device as defined in claim 6, wherein, The caulking groove (1024) comprises a first groove part (10241) and a second groove part (10242) which are communicated with each other, and the width of the second groove part (10242) is larger than that of the first groove part (10241); The plane of the stop pawl (404) is vertical to the plane of the first side wall (102), the stop pawl (404) comprises an insertion end (4041) and a clamping end (4042) which are oppositely arranged, the insertion end (4041) is inserted into the first groove part (10241) and matched with the ratchet teeth (405) or the arc-shaped flange (203), the clamping end (4042) is provided with a bayonet channel (4043), the width of the bayonet channel (4043) is matched with the thickness of the first side wall (102), the bayonet channel (4043) is sleeved on the first side wall (102) along the second groove part (10242), a containing space (4049) for containing the second spring (4044) is arranged inside the bayonet channel (4043), the top of the containing space (4049) is provided with a spring mounting position (4045), the bottom of the containing space (4049) is provided with two symmetrically arranged spring supporting positions (4046), the two springs (4046) are supported between the two springs (4046) and the two springs (4044) are supported by the two springs (4044) and the other ends (4044) are supported by the two springs (4044), one end of the second groove (10242) which is not in contact with the first groove (10241) can be abutted against the second spring (4044).
  8. 8. The tensioning device according to claim 7, characterized in that the end of the insertion end (4041) is provided with a chamfer structure (4047), the end of the bayonet channel (4043) away from the accommodation space (4049) is provided with a guiding bevel (4048), the spring mounting position (4045) is a mounting post, the second spring (4044) is sleeved on the mounting post, and the length of the mounting post is greater than or equal to 1/5 of the length of the accommodation space (4049) and less than or equal to 2/3 of the length of the accommodation space (4049).
  9. 9. The tensioning device according to claim 4, characterized in that an extension wall (106) is provided on the first side wall (102), a second shaft hole (1061) is provided on the extension wall (106), the second shaft hole (1061) is opposite to the first shaft hole (104), the central axes of the second shaft hole (1061) and the first shaft hole (104) are in the same straight line, the extension wall (106) is connected to the first side wall (102) in an L-shaped structure, and a first space (107) is formed between the first side wall (102) and the extension wall (106); The handle (200) comprises a first support arm (204) and a second support arm (205) which are oppositely arranged, a second space (206) is enclosed between the first support arm (204) and the second support arm (205), the movable pawl (402) is installed in the second space (206), the movable pawl (402) comprises a transmission rod (4021) and a pawl head (4022), the pawl head (4022) is fixed on one end of the transmission rod (4021), the head of the pawl head (4022) can be matched with the ratchet teeth (405), the first spring (403) is sleeved on the other end of the transmission rod (4021), the first support arm (204) and the second support arm (205) are provided with opposite third groove parts (207), two side edges of the pawl head (4022) are embedded in the third groove parts (207), two sides of the pawl head (4022) can move along the length direction of the handle (200) in the third groove parts (207), the first support arm (403) is arranged on the second support arm (4021) in an avoidance mode, and the first support arm (205) is arranged on the second support arm (4021) in a sliding mode, and the second support arm (205) is arranged on the second support arm (4021) in a sliding mode; Two semicircular holes (4012) are formed in the unidirectional ratchet wheel (401), clamping strips (4013) are arranged between the two semicircular holes (4012), a clamping groove (305) is formed in the second end (302) of the rotating shaft (300) in an axial direction, the rotating shaft (300) is divided into two clamping parts (3051) by the clamping groove (305), the clamping strips (4013) are inserted into the clamping groove (305), the clamping parts (3051) are arranged in the semicircular holes (4012) in a penetrating mode, the plane where the clamping groove (305) is located is perpendicular to the plane where the mounting groove (303) is located, a rotary wrench (306) is inserted into the clamping groove (305), and the rotary wrench (306) is fixed to the clamping groove (305) of the rotating shaft (300) through a locating pin (307); The one-way ratchet wheels (401) are provided with two in total, one-way ratchet wheel (401) is located in a first space (107) on one side, close to the extending wall (106), of the first side wall (102), the other one-way ratchet wheel (401) is located on one side, away from the extending wall (106), of the first side wall (102), a blocking ring (600) is arranged on the outer side of the other one-way ratchet wheel (401), and the blocking ring (600) is located on the inner side of the positioning pin (307).
  10. 10. The tensioning device according to claim 1, characterized in that a fixed shaft (700) is provided on the end of the first side wall (102) and the second side wall (103) remote from the rotation shaft (300), the fixed shaft (700) can be used for connecting a first strap (501), the rotation shaft (300) can be used for laterally loading a second strap (502), and rotation of the handle (200) can drive the rotation shaft (300) to rotate so as to drive the second strap (502) to wind and tighten.

Description

Tensioning device Technical Field The invention relates to a tensioning device, in particular to a tensioning device which is convenient to use and can be used for threading a belt axially. Background For the purpose of securing a load to a floor or platform for ease of transportation, tensioning devices are often used in conjunction with a length of strap. Typically, the short straps are secured directly to the tensioning device, and for tightening the load, one end of the long strap is typically anchored to a fixed point on one side of the base plate or platform, while the remainder of the long strap is placed on or around the load and extends to the other side of the base plate or platform where the long strap redundancy is wrapped by the tensioning device for tightening. In general, the tightening device has a rotating shaft with a mounting groove, and the long strap is inserted into the mounting groove and is tightened by winding the rotating shaft. The traditional mounting groove is mostly closed mounting groove, and long bandage needs to insert the tip of bandage in closed mounting groove promptly, then constantly pulls, just can reach long bandage and need carry out taut position. Such a large number of threading and pulling operations are time-consuming and labor-consuming, especially when the long strap is long or heavy, or when the strap and the fixing point to be used are large. To this problem: US20140338161A1 discloses a side loading ratchet device which can conveniently realize that any position of a binding belt directly penetrates into a mounting groove in a rotating shaft from the side. However, this solution requires a specially arranged "movable member" which is openable and closable, but the opening and closing of this "movable member" is also cumbersome and may result in the average consumer not knowing how the operation is required. And in this solution, if the "movable member" is eliminated, one end of the rotating shaft is no longer supported, so that the huge tension of the strap cannot be borne. US20180111541A1 discloses a load binding device, perhaps can be convenient realization with the optional position of bandage penetrate the mounting groove department in the axis of rotation with the mode of wearing to the side, but among this scheme, the atress of bandage is mostly inhomogeneous atress, can influence the life of bandage. At the same time, the shaft is provided with "at least one groove cut into the body of the shaft", which cuts greatly reduce the rigidity of the shaft. Disclosure of Invention The invention aims to provide a tensioning device which can solve at least one of the technical problems, and the technical scheme of the invention is as follows: The tensioning device comprises a seat body and a handle which can be rotationally connected, a rotating shaft and a ratchet mechanism are arranged at the joint of the handle and the seat body, the ratchet mechanism can be driven to rotate by rotating the handle, and the rotating shaft can be driven to rotate by the ratchet mechanism. The base body comprises a base plate, a first side wall and a second side wall, wherein the first side wall and the second side wall are oppositely and fixedly arranged on the base plate, a first shaft hole is formed in the first side wall, and a limiting groove is formed in the second side wall; the axis of rotation includes first end and second end, and the first end of axis of rotation has seted up the mounting groove that can supply the bandage side direction to pack into along axial direction, and the first end butt of axis of rotation is in the spacing groove, and the second end of axis of rotation wears to locate on the first shaft hole of first lateral wall. The contact area between the rotating shaft and the limiting groove is preferably less than or equal to half of the outer circumference of the rotating shaft. In some embodiments, the substrate, the first side wall and the second side wall are of an integrated structure, the mounting groove divides the rotation shaft into two approximate semi-cylindrical portions, and an abutting area of the rotation shaft and the limiting groove is smaller than or equal to an arc area of the semi-cylindrical portions. In some embodiments, the upper edge of the second side wall is an approximately L-shaped surface, the limit groove is located at the bottom end of the L-shaped surface, the limit groove comprises a stress portion and a bearing portion, the bearing portion is used for bearing the first end of the rotating shaft, and the stress portion is used for blocking the first end of the rotating shaft to move in a direction away from the center of the base body. In some embodiments, the ratchet mechanism comprises a unidirectional ratchet wheel and a movable pawl, the unidirectional ratchet wheel is fixedly arranged on the second end of the rotating shaft, the movable pawl is elastically arranged on the handle, and one end of the movable pawl is