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CN-121993479-A - Screw joint device and apparatus comprising at least one screw joint device

CN121993479ACN 121993479 ACN121993479 ACN 121993479ACN-121993479-A

Abstract

The present invention relates to a screw joint device and an apparatus comprising at least one screw joint device. The screw joint device comprises a first member provided with a screw receiving portion, a second member provided with a hole comprising a first threaded hole portion, a second threaded hole portion and a non-threaded hole portion separating the first threaded hole portion and the second threaded hole portion, and a screw comprising a screw head and a screw shaft provided with a threaded screw portion. The screw joint device is settable by rotation of the screw between a first state in which the second member is fixed relative to the first member and a second state in which the second member is movable relative to the first member. In the first state, the screw receiving portion is aligned with the bore, the screw shaft enters the bore and the threaded screw portion engages the second threaded bore portion such that the first member is clamped between the screw head and the second member. In the second state, the screw shank extends through the first threaded bore portion and the threaded screw portion is located in the non-threaded bore portion of the bore.

Inventors

  • CARL ANDERSON

Assignees

  • 安讯士有限公司

Dates

Publication Date
20260508
Application Date
20251027
Priority Date
20241101

Claims (14)

  1. 1. A screw joint device comprising: A first member (100) provided with at least one screw receiving portion (101); a second member (200) provided with a hole (201), the hole (201) including a first threaded hole portion (202), a second threaded hole portion (203), and a non-threaded hole portion (204) separating the first threaded hole portion (202) and the second threaded hole portion (203), and A screw (300) comprising a screw head (301) and a screw shaft (302) provided with a threaded screw portion (303), The first member (100) is arranged next to the second member (200) and the first threaded hole portion (202) of the hole (201) of the second member (200) is close to the first member (100), and The screw joint device is settable by rotation of the screw (300) between a first state in which the second member (200) is fixed relative to the first member (100) and a second state in which the second member (200) is movable relative to the first member (100), Wherein in the first state, one screw receiving portion (101) of the at least one screw receiving portion (101) of the first member (100) is aligned with the hole (201) of the second member (200) and the screw shaft (302) extends through the one screw receiving portion (101) of the at least one screw receiving portion (101) and into the hole (201) and the threaded screw portion (303) engages the second threaded hole portion (203) such that the first member (100) is clamped between the screw head (301) and the second member (200), and Wherein in the second state, the screw shank (302) extends through the first threaded bore portion (202) of the bore (201), and the threaded screw portion (303) of the screw shank (302) is located in the non-threaded bore portion (204) of the bore (201).
  2. 2. The screw joint device according to claim 1, wherein the non-threaded bore portion (204) of the bore (201) has a first length (L1) and the threaded screw portion (303) of the screw shaft (302) has a second length (L2), the first length (L1) of the non-threaded bore portion (204) being greater than the second length (L2) of the threaded screw portion (303).
  3. 3. The screw joint device according to claim 1, wherein the first member (100) comprises two screw receiving portions (101), and wherein in the second state of the screw joint device the second member (200) is movable relative to the first member (100) between a first position in which a portion of the screw shaft (302) is located in one screw receiving portion (101) of the two screw receiving portions (101) and a second position in which the portion of the screw shaft (302) is located in the other screw receiving portion (101) of the two screw receiving portions (101).
  4. 4. A screw joint device according to claim 3, wherein each of the two screw receiving portions (101) is provided with a lateral opening (103), and wherein in the second state of the screw joint device the second member (200) is movable between the first and second positions relative to the first member (100) by rotation about an axis.
  5. 5. The screw joint device according to claim 4, wherein the first member (100) comprises a peripheral portion comprising a first C-shaped section (104; 107) and a second C-shaped section (105; 108), the first C-shaped section (104; 107) and the second C-shaped section (105; 108) facing each other and being separated by a curved section (106; 109), and wherein the first C-shaped section and the second C-shaped section (104, 105; 107, 108) form the two screw receiving portions (101).
  6. 6. Screw joint device according to claim 1, wherein the hole (201) is formed as an insert (208), the insert (208) being arranged in a through hole (209) provided in the second member (200).
  7. 7. The screw joint device according to claim 6, wherein the insert (208) comprises a first part (210) provided with the first threaded hole portion (202) and a second part (211) provided with the second threaded hole portion (203), and wherein the insert (208) is assembled by concentrically inserting one of the first and second parts (210; 211) into the other of the first and second parts (211; 210).
  8. 8. The screw joint device according to claim 6, wherein the insert (208) is arranged in the through hole (209) by an in-mold process.
  9. 9. Screw joint device according to claim 8, wherein the insert (208) is provided with a profiled or stepped outer envelope surface.
  10. 10. The screw joint arrangement according to claim 6, wherein the insert (208) is made of metal.
  11. 11. Apparatus comprising at least one screw joint device (1; 1', 1 ") according to any one of claims 1 to 10.
  12. 12. The device according to claim 11, wherein the device is a camera device (3).
  13. 13. The device according to claim 12, wherein the first member (100) forms part of a camera body (4) of the camera device (3), and wherein the second member (200) forms part of a lens holder unit (7) of the camera device (3).
  14. 14. The apparatus of claim 13, wherein in the second state of the screw joint device (1', 1 ") the first member (100) is movable between the first and second positions relative to the first member (100) by rotation about an axis corresponding to the optical axis of the lens holder unit (7).

Description

Screw joint device and apparatus comprising at least one screw joint device Technical Field The present invention relates to a screw joint device and an apparatus comprising at least one such screw joint device. More particularly, the present invention relates to a screw joint device for securing a first member and a second member to each other. Background Screw joint devices are commonly used to fix two components to each other by means of screws. A common problem associated with screw joint devices is the risk of the screw falling off during handling. It is known to provide screw joint devices with some kind of retainer function in order to fix a screw to one of the components. One such solution is disclosed in DE4243097 A1. Some type of screw joint device may allow the position of two components relative to each other to be adjusted by loosening and re-tightening the screw joint device. A problem associated with this type of screw joint device is the risk of the screw falling out during the adjustment process, which can be cumbersome, especially if the screw joint device is used in applications arranged at difficult-to-access locations. An example may be a surveillance camera provided with such a screw joint device and arranged in the ceiling of a room. Accordingly, there is a need for an improved screw joint device that provides a retainer function for a screw while also allowing adjustment of the position of two components relative to each other. Disclosure of Invention In view of those stated above, it is an object of the present invention to provide a screw joint device which has a retainer function for a screw and also allows adjustment of the position between two members fixed to each other by means of the screw joint device. It is a further object of the present invention to provide an apparatus comprising at least two such screw joint arrangements. To achieve at least one of the above objects and other objects that will also be evident from the following description, according to the present invention there is provided a screw joint device and an apparatus having the following features. The preferred embodiments will be apparent from the following description. More specifically, according to a first aspect of the present invention, there is provided a screw joint device comprising: A first member provided with at least one screw receiving portion; a second member provided with a hole including a first threaded hole portion, a second threaded hole portion, and a non-threaded hole portion separating the first threaded hole portion and the second threaded hole portion, and A screw comprising a screw head and a screw shaft provided with a threaded screw portion, The first member is disposed adjacent to the second member with the first threaded bore portion of the bore of the second member adjacent to the first member, and The screw joint device is settable by rotation of the screw between a first state in which the second member is fixed relative to the first member and a second state in which the second member is movable relative to the first member, Wherein in the first state, one of the at least one screw receiving portions of the first member is aligned with the aperture of the second member and the screw shaft extends through the one of the at least one screw receiving portions and into the aperture and the threaded screw portion engages the second threaded aperture portion such that the first member is clamped between the screw head and the second member, and Wherein in the second state, the screw shank extends through the first threaded bore portion of the bore and the threaded screw portion of the screw shank is located in the non-threaded bore portion of the bore. An improved screw joint arrangement is provided herein. The screw joint device is settable between the first state and the second state by rotation of the screw. In a first state of the screw joint device, the first member and the second member are fixed relative to each other. More specifically, in the first state, one of the at least one screw receiving portions of the first member is aligned with the bore of the second member, and the screw shaft extends through one of the at least one screw receiving portions and into the bore, and the threaded screw portion engages the second threaded bore portion such that the first member is clamped between the screw head and the second member. Thus, by setting the screw joint device in the first state, i.e. by tightening the screw, the first member and the second member can be firmly fixed to each other. In the second state of the screw joint device, the second member is movable relative to the first member. More specifically, in the second state, the screw shank extends through the first threaded bore portion of the bore, and the threaded screw portion of the screw shank is located in the non-threaded bore portion of the bore. Here, the first member will not be clamped between the second m