GB2145645A - Coaxial connector tightening devices - Google Patents

Coaxial connector tightening devices Download PDF

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Publication number
GB2145645A
GB2145645A GB08419289A GB8419289A GB2145645A GB 2145645 A GB2145645 A GB 2145645A GB 08419289 A GB08419289 A GB 08419289A GB 8419289 A GB8419289 A GB 8419289A GB 2145645 A GB2145645 A GB 2145645A
Authority
GB
United Kingdom
Prior art keywords
head
connection head
spanner
figures
tool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB08419289A
Other versions
GB8419289D0 (en
GB2145645B (en
Inventor
Ian Hall Mcdonald
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co PLC filed Critical General Electric Co PLC
Publication of GB8419289D0 publication Critical patent/GB8419289D0/en
Publication of GB2145645A publication Critical patent/GB2145645A/en
Application granted granted Critical
Publication of GB2145645B publication Critical patent/GB2145645B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/02—Spanners; Wrenches with rigid jaws
    • B25B13/08—Spanners; Wrenches with rigid jaws of open jaw type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/48—Spanners; Wrenches for special purposes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

To facilitate the fitting of connectors to co-axial cable a spanner set has a first open-ended spanner (42) integral with an open channel (41) and having a hand grip (43). A second open ended spanner (50) having a channel (51) to fit over the connector end is adapted for connection to a torque wrench (60). In use one part (20) of the connector is held by the first spanner (42) with the cable (10) located in the channel (41) whilst the torque wrench (60) is used to tighten the other part (30) of the connector to a specified torque. <IMAGE>

Description

SPECIFICATION Coaxial connector tightening devices This invention relates to co-axial connector tightening devices, and in particular to devices for use in fitting a connector half to a free end of an electrical co-axial cable, the connector half consisting of a termination part to be fitted to the free end of the cable with the inner and outer leads of the cable terminated therein and a connection head to be fitted to the termination part, the termination part and the connection head having mating screw threads and each having a collar with flats.
Connector halves as described above are used with radio frequency co-axial cables in transmission equipment. The other, mating, connector half may be in a fixed position in the equipment.
It has been the practice during installation and commissioning of such transmission equipment that, when the termination part of the connector half as described above has been fitted to the free end of the cable, a person fits the connection head to the termination part, approximately or precisely to a recommended tightness, by engaging the collar on the termination part in a flat open-ended spanner held in one hand while engaging the collar on the connection head either in another flat open-ended spanner, or in an open-ended preset torque wrench, held in that person's other hand. Because it is on the end of a free length of cable, it has been found to be difficult to maintain the collar or the termination part in its spanner during this operation, thus resulting in a slow operation which also entails the risk of damaging the parts of the connector half.
An object of the invention is to provide means for lessening the above-mentioned difficulty.
According to the invention there is provided a retaining tool for use in fitting a connector half to a free end of an electrical co-axial cable, the connector half consisting of a termination part to be fitted to said free end of the cable with the inner and outer leads of the cable terminated therein prior to use of said retaining tool and a connection head to be fitted to the termination part, the termination part and the connection head having mating screw threads and each having a collar with flats, the retaining tool comprising a body portion shaped to provide an open channel for locating an end section of the cable including said free end along a longitudinal axis of the channel and to provide an open jaw for engaging said collar on the termination part at one end of the body portion against rotation with respect to said axs of the channel, and a handle on the body portion with which a person may securely hold the body portion with the cable end section and fitted termination part so located and engaged using only one hand while fitting the connection head to the termination part via the mating screwthreads using a tightening tool held in that person's other hand and engaging said collar on the connection head.
Also according to the invention there is provided the combination of a retaining tool as described in the previous paragraph and a spanner head for holding said connection head,the spanner head comprising means for locating the connection head along a longitudinal axis of the spanner head, an open jaw at one end of the connection head locating means for engaging said collar on the connection head against rotation with respect to said axis of the spanner head, means at the other end of the connection head locating means for abutting the end of the connection head which is furthest away from the retaining tool when in use, and means for detachably fitting the spanner head to a driver such that in use said tightening tool consists of the spanner head and driver.Thus, a single driver of a standard type may be used with any one of a number of different such spanner heads, each spanner head being specially designed for a particular one of a number of different connection heads all of which can fit the same termination part. However, for example, if a single design of connection head is predominantly used, it may be convenient to have the spanner head non-detachable from the driver.
Thus, also according to the invention there is provided the combination of a retaining tool as described in the penultimate paragraph and a said tightening tool for use therewith, the tightening tool comprising a driver to be held in use in said person's other hand and a spanner head on the driver for holding said connection head, the spanner head comprising means for locating the connection head along a longitudinal axis of the spanner head, an open jaw at one end of the connection head locating means for engaging said collar on the connection head against rotation with respect to said axis of the spanner head, and means at the other end of the connection head locating means for abutting the end of the connection head which is furthest away from the retaining tool when in use.By holding the whole connection head, and not just the collar on the connection head,the spanner head as described in either of the two previous paragraphs advantageously provides further security and ease of operation for the person fitting the connection head to the termination part.
The invention will now be described in more detail with reference to the accompanying drawings, in which Figure 1 shows a perspective view of a connector half, of the type with which this invention is concerned, fitted to a free end of an electrical coaxial cable, Figure 2 shows the same perspective view as Figure 1, but with only the termination part of the connector half fitted to the free end of the cable, Figure 3 shows the same perspective view as Figure 1 of the connection head of the connector half which is fitted to the termination part shown in Figure 2, Figure 4 shows a perspective view of a retaining tool according to the invention, for use in holding the free end of the cable with the termination part fitted thereto as shown in Figure 2 while the connection head shown in Figure 3 is fitted to the termination part, Figure 5shows a perspective view, from a different perspective to that of Figures 1 to 4, of a spanner head for holding the connection head of Figure 3 and for use in combination, also according to the invention, with the retaining tool of Figure 4 while fitting the connection head to the termination part, and a driver of a standard type which is fitted to the spanner head in use to form a tightening tool, Figure 6 shows a side view, in reduced size, of the free cable end and fitted termination part of Figure 2 held in the retaining tool of Figure 4, with the spanner head and driver of Figure 5 aligned as in use therewith, and the connection head of Figure 3 ready to be held in the spanner head, Figure 7 shows a side view to the same scale as Figure 6, of an alternative tightening tool for use in combination, also according to the invention, with the retaining tool of Figure 4, in which a spanner head for holding the connection head of Figure 3 is non-detachable from a driver, Figures 8A and 8B show side and end views respectively of another retaining tool according to the invention, Figures 9A, 9B and 9C show plan, longitudinal section and end views respectively of another spanner head, for use in combination, also according to the invention, with the retaining tool of Figures 8A and 8B, and Figures lOA and 10B show longitudinal section and end views respectively of yet another spanner head, for use in combination, also according to the invention, with the retaining tool of Figures 8A and 8B.
Referring now to Figures 1 to 3, there is shown a free end section 10 of an electrical co-axial cable, for example a 7mm diameter cable for use in transmission equipment with radio-frequency signals up to ultra-high frequencies, with a connector ha If consisting of a termination part 20 and a connection head 30 fitted (as shown in Figure 1) to the free end of the cable. The termination part 20 is first fitted to the cable with the inner and outer leads of the cable terminated therein; the inner lead 80 is terminated by soldering and the outer lead (not shown) is terminated by crimping to the sleeve 21. The termination part 20 and the connection head 30 have mating screw threads 22, 32 respectively.The termination part 20 has a collar with flats in the form of a hexagon 23, and the connection head 30 has a collar with flats in the form of a ring 33 having two opposing flats only one of which 331 can be seen in the drawings.
Referring now also to Figure 4, a retaining tool 40 has a body portion 41 shaped to provide an open channel for locating the free end section 10 of the cable along a longitudinal axis of the channel and to provide an open jaw 42 for engaging the hexagon collar 23 on the termination part 20 at one end of the body portion 41 against rotation with respect to the longitudinal axis of the channel, and a handle 43 on the body portion 41. By means of the handle 43, a person may securely hold the body portion with the cable end section 10 and fitted termination part 20 so located and engaged using only one hand while fitting the connection head 30 to the termination part 20 via the mating screw threads 22, 32 using a tightening tool held in that person's other hand and engaging the collar 33 on the connection head 30.
Additional security is achieved by a clip 44 fixed within the channel for holding the end section 10 of the cable.
The tightening tool just referred to may be a standard type of flat open ended spanner or open ended pre-settorque wrench with which a recommended tightness of connection may respectively be approximately or precisely achieved. However, referring now also to Figure 5 there is shown a specially designed spanner head 50 for holding the whole of the connection head 30.The spanner head 50 has an open channel piece 51 for locating the connection head 30 along a longitudinal axis of the spanner head, an open jaw 52 at one end of the channel piece 51 for engaging the collar 33 on the connection head 30 against rotation with respect to the longitudinal axis of the spanner head, and a wall 53 at the other end of the channel piece 51 for abutting the end of the connection head 30 which is furthest away from the retaining tool 40 when in use, i.e. the end 34 of the connection head 30 shown in Figure 3. An end portion 54 of the spanner head 50 has a square-section socket 55 and a hole 56 leading into the socket 55 for detachably fitting the spanner head 50 to a driver 60 such that the tightening tool used with the retaining tool 40 consists of the spanner head 50 and the driver 60.
Thus a single driver 60 of a standard type may be used with any one of a number of different spanner heads 50, each spanner head 50 being specially designed for a particular one of a number of different connection heads 30.
Referring now to Figure 6, the free end section 10 of the cable is shown placed in the channel of the body portion 41 of the retaining tool of Figure 4 with the hexagon collar 23 of the termination part 20 engaged in the jaw 42 at one end of the body portion 41. The handle 43 is shown held in one hand of the user with the thumb of that hand placed over the open channel to retain the cable end section 10 and termination part 20 in position. The user can then fit the connection head 30 finger tight on the termination part 20 with his other hand via the mating screw threads. With the spanner head 50 fitted to the driver 60 to form a tightening tool and held in the user's other hand the user then places the spanner head 50 on the connection head 30 to engage the collar 33 in the jaw 52 and turns the driver to a desired tightness.
Referring now to Figure 7 there is shown an alternative tightening tool 70 for use in combination with the retaining tool of Figure 4. The tightening tool 70 has a driver 71, which may be adapted to provide a pre-settorque, and a spanner head 72 on the driver 71 and non-detachable therefrom. The spanner head 72 has the same features as the spanner head 50 described with reference to Figure 5 but without the socket 55 and associated parts 54 and 56. It may be convenient to have the alternative tightening tool 70, for example if a single design of connection head 30 is predominantly required by the user.
Referring now to Figures 8A and 8B together with Figure 2, a retaining tool 80 has a body portion 81 shaped to provide an open channel for locating the free end section 10 of the cable along a longitudinal axis of the channel and to provide an open jaw for engaging the hexagon collar 23 on the termination part 29 at one end of the body portion 81 against rotation with respect to the longitudinal axis of the channel. The body portion 81 is essentially a channel piece of constant cross-section which is the shape required for the open jaw, and has two centrally disposed opposing slots 82 in the walls of the channel piece.Thus either one of two integral portions 83 of the channel piece may form the open jaw to engage the collar 23 at one of the two ends of the body portion 81, according to which way around the end section 10 of the cable is placed in the channel piece, and the remainder of that portion 83 and the whole of the other portion 83 will provide the open channel to locate the end section 10 of the cable along its longitudinal axis. By means of a handle 84, a person may securely hold the body portion 81 with the cable end section 10 and fitted termination part 20 located and engaged therein using only one hand and the thumb of that hand may be placed on the cable end section 10 in the slots 82.
Referring now to Figures 9A to 9C there is shown another specially designed spanner head 90 For holding the whole of the connection head 30 shown in Figure 3. The spanner head 90 has a base portion 91 with a Terry's Tool spring clip 92 attached thereto for locating the connection head 30 along a longitudinal axis of the spanner head, an open jaw 93 at one end of the base portion 91 for engaging the collar 33 on the connection head 30 against rotation with respect to the longitudinal axis of the spanner head, and a wall 94 at the other end of the base portion 91 for abutting the end of the connection head 30 which is furthest away from the retaining tool 40 when in use, i.e. the end 34 of the connection head 30 shown in Figure 3.An end portion 95 of the spanner head 90 has a square-section socket 96 and a hole 97 leading into the socket 96 for detachably fitting the spanner head 90 to a driver 60 (Figure 5) such that a tightening tool used with the retaining tool 40 consists of the spanner head 90 and the driver 60.
Referring now to Figures 10A and 10B there is shown another specially designed spanner head 100 for holding the whole of a connection head which has different dimensions from the connection head to be held by the spanner head of Figures 9A to 9C but which has the same basic characteristics and so for the purpose of this description can again be referred to as the connection head. The spanner head 100 is essentially a hollow cylinder whose internal dimensions vary along its length to provide the required features.The spanner head 100 has a cylindrical portion 101 of given diameter provided for locating the connection head 30 along a longitudinal axis of the spanner head, an open jaw 102 at one end of the cylindrical portion 101 for engaging the collar 33 on the connection head 30 against rotation with respect to the longitudinal axis of the spanner head and a cylindrical portion 102 of smaller diameter than the cylindrical portion 101 which forms a rim 104 for abutting the end of the connection head 30 which is furthest away from the retaining tool 40 when in use, i.e. the end 34 of the connection head 30 shown in Figure 3. An end portion of the spanner head cylinder has a squaresection socket 105 and a hole 106 leading into the socket 105 for detachably fitting the spanner head 100 to a driver 60 such that the tightening tool used with the retaining tool 40 consists of the spanner head 100 and the driver 60.
In the same manner as described above with reference to Figure 7 for the spanner head 50 shown in Figure 5, the spanner heads 90 and 100 shown in Figures 9A to 9C and Figures 1 OA and 1 0B respctively may be modified by omitting the sockets 96 and 106, and providing them non-detachably on a driver with a pre-settorque.

Claims (1)

1. A retaining tool for use in fitting a connector half to a free end of an electrical co-axial cable, the connector half consisting of a termination part to be fitted to said free end of the cable with the inner and outer leads of the cable terminated therein prior to use of said retaining tool and a connection head to be fitted to the termination part, the termination part and the connection head having mating screw threads and each having a collar with flats, the retaining tool comprising a body portion shaped to provide an open channel for locating an end section of the cable including said free end along a longitudinal axis of the channel and to provide an open jaw for engaging said collar on the termination part at one end of the body portion against rotation with respect to said axis of the channel, and a handle on the body portion with which a person may securely hold the body portion with the cable end section and fitted termination part so located and engaged using only one hand while fitting the connection head to the termination part via the mating screw threads using a tightening tool held in that person's other hand and engaging said collar on the connection head.
2. The combination of a retaining tool as claimed in Claim 1 and a spanner head for holding said connection head, the spanner head comprising means for locating the connection head along a longitudinal axis of the spanner head, an open jaw at one end of the connection head locating means for engaging said collar on the connection head against rotation with respect to said axis of the spanner head, means at the other end of the connection head locating means for abutting the end of the connection head which is furthest away from the retaining tool when in use, and means for detachably fitting the spanner head to a driver such that in use said tightening tool consists of the spanner head and driver.
3. The combination of a retaining tool as claimed in Claim 1 and a said tightening tool for use therewith, the tightening tool comprising a driver to be held in use in said person's other hand and a spanner head on the driver for holding said connection head, the spanner head comprising means for locating the connection head along a longitudinal axis of the spanner head, an open jaw at one end of the connection head locating means for engaging said collar on the connection head against rotation with respect to said axis of the spanner head, and means at the other end of the connection head locating means for abutting the end of the connection head which is furthest away from the retaining tool when in use.
5. A retaining tool for use in fitting a connector half to a free end of an electrical co-axial cable, substantially as herein described with reference to Figures 1 to 4 and 6 and as shown in Figure 4 of the accompanying drawings.
6. A retaining tool for use in fitting a connector half to a free end of an electrical co-axial cable, substantially as herein described with reference to Figures 1 to 3, 8A and 8B and as shown in Figures 8A and 8B of the accompanying drawings.
7. The combination of a retaining tool as claimed in Claim 5 or Claim 6 and a spanner head substantially as herein described with reference to Figures 1 to 6 and as shown in Figure 5 of the accompanying drawings.
8. The combination of a retaining tool as claimed in Claim 5 or Claim 6 and a spanner head substantially as herein described with reference to Figures 3 and 9A to 9C and as shown in Figures 9A to 9C of the accompanying drawings.
9. The combination of a retaining tool as claimed in Claim 5 or Claim 6 and a spanner head substantially as herein described with reference to Figures 3 and 10A and lOB and as shown in Figures 10A and 10B ofthe accompanying drawings.
10. The combination of a retaining tool as claimed in Claim 5 or Claim 6 and a tightening tool substantially as herein described with reference to Figures 1 to 7 and as shown in Figure 7 of the accompanying drawings.
11. The combination of a retaining tool as claimed in Claim 5 or Claim 6 and a tightening tool substantially as herein described with reference to Figures 3, to 9C and 7 of the accompanying drawings.
12. The combination of a retaining tool as claimed in Claim 5 or Claim 6 and a tightening tool substantially as herein described with reference to Figures 3, 10A, 10B and 7 of the accompanying drawings.
GB08419289A 1983-08-31 1984-07-27 Coaxial connector tightening devices Expired GB2145645B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB838323328A GB8323328D0 (en) 1983-08-31 1983-08-31 Co-axial connector tightening devices

Publications (3)

Publication Number Publication Date
GB8419289D0 GB8419289D0 (en) 1984-08-30
GB2145645A true GB2145645A (en) 1985-04-03
GB2145645B GB2145645B (en) 1986-09-03

Family

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Application Number Title Priority Date Filing Date
GB838323328A Pending GB8323328D0 (en) 1983-08-31 1983-08-31 Co-axial connector tightening devices
GB08419289A Expired GB2145645B (en) 1983-08-31 1984-07-27 Coaxial connector tightening devices

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB838323328A Pending GB8323328D0 (en) 1983-08-31 1983-08-31 Co-axial connector tightening devices

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2872078A1 (en) * 2004-06-24 2005-12-30 Lohr Ind Setting tool for tightening nut or screw head, has flat body terminated by tightening and driving ends, where body is extended by ends at right angle, and each body extends in shape of wing perpendicular to general plane of body
US20130192039A1 (en) * 2012-01-31 2013-08-01 Ronald Trusty Sap cable tool remover for marine electronics sonar and power cables

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2872078A1 (en) * 2004-06-24 2005-12-30 Lohr Ind Setting tool for tightening nut or screw head, has flat body terminated by tightening and driving ends, where body is extended by ends at right angle, and each body extends in shape of wing perpendicular to general plane of body
US20130192039A1 (en) * 2012-01-31 2013-08-01 Ronald Trusty Sap cable tool remover for marine electronics sonar and power cables

Also Published As

Publication number Publication date
GB8419289D0 (en) 1984-08-30
GB8323328D0 (en) 1983-10-05
GB2145645B (en) 1986-09-03

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930727