TWI743978B

TWI743978B - Torque wrench torque adjusting device (1)

Info

Publication number: TWI743978B
Application number: TW109130435A
Authority: TW
Inventors: 蔡文凱
Original assignee: 蔡文凱
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-10-21
Also published as: TW202210245A

Abstract

本發明係揭露一種扭力扳手扭力調整裝置，包括一扳手、一安裝於扳手一端之預力機構及一連接扳手與預力機構之扭力調整裝置。該扳手具有一柄部及一操作頭。該預力機構係容置於柄部，並對操作頭提供一預壓力。該扭力調整裝置係與預力機構互動，俾以調節該預壓力，其包括：複數設於柄部之第一珠孔、複數容置於各第一珠孔之第一滾珠、及一與預力機構連接並套銜於柄部外周側之握管。該握管內徑面設有一供各第一滾珠滑動之珠槽。藉由上述構件之組合，扭轉握管以調節預力機構之預壓力，且藉由滾珠與珠槽之互動，降低握管扭轉時之阻力。 The present invention discloses a torque adjusting device for a torque wrench, which includes a wrench, a pre-force mechanism installed at one end of the wrench, and a torque adjusting device connecting the wrench and the pre-force mechanism. The wrench has a handle and an operating head. The pre-force mechanism is housed in the handle and provides a pre-pressure to the operating head. The torque adjusting device interacts with the pre-force mechanism to adjust the pre-pressure, and includes: a plurality of first ball holes provided in the handle, a plurality of first balls accommodated in each first ball hole, and a pre-pressure The force mechanism is connected and sleeved on the grip tube on the outer circumference of the handle. The inner diameter surface of the grip tube is provided with a bead groove for sliding of each first ball. With the combination of the above-mentioned components, the grip tube is twisted to adjust the pre-pressure of the pre-force mechanism, and through the interaction of the balls and the bead grooves, the resistance when the grip tube is twisted is reduced.

Description

扭力扳手扭力調整裝置(一) Torque wrench torque adjusting device (1)

本發明係與手工具相關之技術領域，尤其是指一種扭力扳手扭力調整裝置。 The present invention relates to the technical field related to hand tools, and in particular refers to a torque adjusting device for a torque wrench.

先前技藝中，扳手常用於帶動緊固件(螺栓或螺帽)進行螺合。面對精密構件，扳手螺合之扭力值都有其限制，為便於操作扳手設有一扭力值的調節機構，在扳動緊固件行程中，超出預設扭力值時會讓操作頭形成空轉狀態。 In the previous art, wrenches are often used to drive fasteners (bolts or nuts) for screwing. In the face of precision components, the torque value of the wrench screwing has its limits. In order to facilitate the operation of the wrench, a torque value adjustment mechanism is provided. During the stroke of the fastener, the operating head will be in an idling state when the preset torque value is exceeded.

有關具扭力值調節機構之扳手，請參閱圖8、9所示，其大致在一扳手10的尾部安裝一調節機構20。 For the wrench with a torque value adjustment mechanism, please refer to FIGS.

上述扳手10(先前技藝)，包括一中空之柄部12及一設於柄部12一端之操作頭14。其中，柄部12一端外周面設有一外螺紋122。 The aforementioned wrench 10 (previous art) includes a hollow handle 12 and an operating head 14 provided at one end of the handle 12. Wherein, an external thread 122 is provided on the outer peripheral surface of one end of the shank 12.

該調節機構20，包括一握把22及一與握把22連接互動，並施予操作頭14一預壓力之預力總成24。實施時，握把內徑面兩端，分別具有一第一、二內螺紋段222、224。其中第一內螺紋段222與柄部12之外螺紋122匹配。而第二內螺紋段224係提供預力總成24螺接。 The adjusting mechanism 20 includes a grip 22 and a pre-force assembly 24 connected and interacting with the grip 22 and applying a pre-pressure to the operating head 14. In implementation, both ends of the inner diameter surface of the grip are respectively provided with a first and a second internal thread section 222, 224. The first internal thread section 222 matches the external thread 122 of the shank 12. The second internal threaded section 224 provides the pre-force assembly 24 for screw connection.

透過調節握把22螺合柄部12外螺紋段122之位置不同，連動預力總成24施予操作頭14不同之預壓力，就可以改變扳手10響應的扭力值，俾以確保施予緊固件(圖中未示，例如螺栓或螺帽)之扭力大小。 By adjusting the different positions of the external thread section 122 of the grip 22 screwed to the handle 12, and the linkage pre-force assembly 24 exerts different pre-pressures on the operating head 14, the torque value of the wrench 10 response can be changed to ensure that the tightening is applied. Firmware (not shown in the picture, For example, the torque of bolts or nuts).

雖說前案教示可以達成調節扳手10響應不同扭力值之目的，但其結構卻存有以下若干缺失： Although the previous teaching can achieve the purpose of adjusting the wrench 10 to respond to different torque values, its structure has the following defects:

1.柄部12與握把22係透過螺紋結構連接，並相對位移。而螺紋螺合之間必然存有齒背隙的問題。 1. The handle 12 and the grip 22 are connected through a threaded structure and are relatively displaced. However, there must be a problem of backlash between the screw threads.

2 螺紋螺合係為面的接觸磨擦，導致扭轉握把40的過程十分費力。 2 The screw threading system is a surface contact friction, which makes the process of twisting the grip 40 very laborious.

3.由於預力總成24的反作用力會進一步的作用在螺紋結構上，導致使用者扭轉握把22過程，將會更加費力。 3. Since the reaction force of the pre-force assembly 24 will further act on the threaded structure, the process of twisting the grip 22 by the user will be more laborious.

有見於此，如何降低扭轉握把22之負擔，其結構設計實有其改善之必要。 In view of this, how to reduce the burden of twisting the grip 22, its structural design is really necessary for improvement.

有鑑於上述先前技藝之問題與缺失，本發明之主要目的，乃在於提供一種扭力扳手扭力調整裝置，藉由結構之創新與巧思，解決上述先前技藝存在之缺失。 In view of the above-mentioned problems and deficiencies of the prior art, the main purpose of the present invention is to provide a torque wrench torque adjusting device, which solves the above-mentioned deficiencies of the prior art through structural innovation and ingenuity.

根據本發明上述目的，本發明提出一種扭力扳手扭力調整裝置，包括一扳手、一安裝於扳手一端之預力機構及一連接扳手與預力機構之扭力調整裝置。該扳手具有一柄部及一操作頭。該預力機構係容置於柄部，並對操作頭提供一預壓力。該扭力調整裝置係預力機構互動，俾以調節該預壓力，其包括：複數設於柄部之第一珠孔、複數容置於各第一珠孔之第一滾珠、及一預力機構連接並套銜於柄部外周側之握管，其內徑面設有一供各第一滾珠滑動之珠槽。藉由上述構件之組合，扭轉握管以調節預力機構之預壓力，且藉由滾珠與珠槽之互動，降低握管扭轉時之阻力。 According to the above objective of the present invention, the present invention provides a torque adjusting device for a torque wrench, which includes a wrench, a pre-force mechanism installed at one end of the wrench, and a torque adjusting device connecting the wrench and the pre-force mechanism. The wrench has a handle and an operating head. The pre-force mechanism is housed in the handle and provides a pre-pressure to the operating head. The torque adjusting device interacts with a pre-force mechanism to adjust the pre-pressure, and includes: a plurality of first ball holes provided in the handle, a plurality of first balls accommodated in each first ball hole, and a pre-force mechanism The grip tube connected and sleeved on the outer circumference of the handle is provided with a bead groove for sliding of each first ball on the inner diameter surface. With the combination of the above-mentioned components, the grip tube is twisted to adjust the pre-pressure of the pre-force mechanism, and through the interaction of the balls and the bead grooves, the resistance when the grip tube is twisted is reduced.

10:扳手 10: Wrench

12:柄部 12: handle

122:第一扭力值刻度 122: The first torque value scale

14:操作頭 14: Operation head

122:外螺紋 122: external thread

20:調節機構 20: adjustment mechanism

22:握把 22: Grip

222:第一內螺紋段 222: The first internal thread section

224:第二內螺紋段 224: second internal thread segment

24:預力總成 24: Pre-force assembly

30:預力機構 30: Pre-force mechanism

32:彈性元件 32: elastic element

34:從動件 34: Follower

40:扭力調整裝置 40: Torque adjustment device

41、41’:第一珠孔 41, 41’: The first bead hole

42:第二珠孔 42: second bead hole

43:第一滾珠 43: The first ball

44:第二滾珠 44: The second ball

45:握管 45: grip tube

452、452’:珠槽 452, 452’: bead groove

454:管螺紋 454: pipe thread

456:第二扭力值刻度 456: Second torque value scale

56:C扣槽 56: C buckle slot

57:C扣 57: C buckle

〔圖1〕係本發明實施例立體示意圖。 [Figure 1] is a three-dimensional schematic diagram of an embodiment of the present invention.

〔圖2〕係圖1所示實施例局部剖面示意圖。 [Figure 2] is a schematic partial cross-sectional view of the embodiment shown in Figure 1.

〔圖3〕係圖1所示實施例局部構件分解示意圖。 [Fig. 3] is an exploded schematic diagram of partial components of the embodiment shown in Fig. 1. [Fig.

〔圖4〕係圖2所示實施例A-A剖線剖面示意圖。 [Fig. 4] is a schematic cross-sectional view of the A-A cross-sectional line of the embodiment shown in Fig. 2. [Fig.

〔圖5〕係圖2所示實施例B-B剖線剖面示意圖。 [Fig. 5] is a schematic cross-sectional view of the B-B cross-sectional line of the embodiment shown in Fig. 2. [Fig.

〔圖6〕係本發明另一實施例局部構件分解示意圖。 [Figure 6] is an exploded schematic view of partial components of another embodiment of the present invention.

〔圖7〕係本發明另一實施例剖面示意圖。 [Figure 7] is a schematic cross-sectional view of another embodiment of the present invention.

〔圖8〕係先前技藝中具扭力調節之扳手示意圖 [Figure 8] is a schematic diagram of a wrench with torque adjustment in the previous technique

〔圖9〕係圖8所示實施例局部剖面示意圖。 [Figure 9] is a schematic partial cross-sectional view of the embodiment shown in Figure 8.

以下請參照相關圖式進一步說明本發明扭力扳手扭力調整裝置實施例，為便於理解本發明實施方式，以下相同元件係採相同符號標示說明。 Hereinafter, please refer to the related drawings to further describe the embodiments of the torque adjusting device of the torque wrench of the present invention. In order to facilitate the understanding of the embodiments of the present invention, the same components are described below with the same symbols.

請參閱圖1至5所示，本發明之扭力扳手扭力調整裝置，包括一扳手10、一安裝於扳手一端之預力機構30及一連接扳手10與預力機構30之扭力調整裝置40。 1 to 5, the torque wrench torque adjusting device of the present invention includes a wrench 10, a pre-force mechanism 30 installed at one end of the wrench, and a torque adjusting device 40 connecting the wrench 10 and the pre-force mechanism 30.

上述扳手10(先前技藝)，包括一中空之柄部12及一設於柄部12一端之操作頭14。 The aforementioned wrench 10 (previous art) includes a hollow handle 12 and an operating head 14 provided at one end of the handle 12.

前述柄部12，遠離操作頭14另一端之外周側，設有一第一扭力值刻度122。 The handle 12 is provided with a first torque value scale 122 on the outer peripheral side away from the other end of the operating head 14.

上述預力機構30(先前技藝)，係提供一預壓力施予操作頭14。包括一提供操作頭14一壓力之彈性元件32及一壓縮彈性元件32之從動件34。實施時，預力機構30為先前技藝且不是本發明之技術特徵，故不進一步的多加贅述。本發明所舉之實施例亦非本發明唯一實施樣態，舉凡等效之實施態樣皆可適用。 The aforementioned pre-force mechanism 30 (previous art) provides a pre-pressure to the operating head 14. It includes an elastic element 32 that provides a pressure for the operating head 14 and a follower 34 that compresses the elastic element 32. When implemented, the pre-force mechanism 30 is a prior art The art is not a technical feature of the present invention, so it will not be described further. The embodiments of the present invention are not the only embodiments of the present invention, and all equivalent embodiments are applicable.

上述扭力調整裝置40，係包括複數第一珠孔41、複數第二珠孔42、複數第一滾珠43、複數第二滾珠44、一握管45、一C扣槽及一C扣。 The torque adjusting device 40 includes a plurality of first ball holes 41, a plurality of second ball holes 42, a plurality of first balls 43, a plurality of second balls 44, a grip tube 45, a C-buckle groove, and a C-buckle.

所述各第一、二珠孔41、42，係設於柄部12遠離操作頭14另一端外側面預設位置。 The first and second bead holes 41 and 42 are arranged at a predetermined position on the outer surface of the other end of the handle 12 away from the operating head 14.

所述各第一、二滾珠43、44，係分別容置於第一、二珠孔41、42中。 The first and second balls 43, 44 are respectively accommodated in the first and second ball holes 41, 42.

所述握管45，係匹配各第一、二珠孔41、42套銜於柄部12外周側。具有一珠槽452、一管螺紋454及一第二扭力值刻度456。 The grip tube 45 is matched with the first and second bead holes 41 and 42 and sleeved on the outer peripheral side of the handle 12. It has a bead groove 452, a pipe thread 454 and a second torque scale 456.

前述珠槽452及管螺紋454，係分別沿握管45內徑面預設位置，且珠槽452為一連續之螺旋槽，並與各第一珠孔41位置匹配，提供各第一滾珠43容置滾動。 The aforementioned bead groove 452 and pipe thread 454 are respectively preset positions along the inner diameter surface of the holding tube 45, and the bead groove 452 is a continuous spiral groove and matches the position of each first ball hole 41 to provide each first ball 43 Contains scrolling.

前述管螺紋454，係提供用與預力機構30之從動件34匹配連接。 The aforementioned pipe thread 454 is provided for matching connection with the follower 34 of the pre-force mechanism 30.

前述第二扭力值刻度456，係形成於握管45外周側，毗鄰柄部12之第一扭力值刻度122處。 The aforementioned second torque value scale 456 is formed on the outer peripheral side of the grip tube 45 adjacent to the first torque value scale 122 of the handle 12.

所述C扣槽56，係凹陷形成於柄部12外側面，並與握管45位置匹配。 The C buckle groove 56 is recessed and formed on the outer surface of the handle 12 and matches the position of the grip tube 45.

所述C扣57，係對應C扣槽56套設於柄部12外側面，並抵撐握管45內徑面。 The C buckle 57 corresponds to the C buckle groove 56 sleeved on the outer surface of the handle 12 and supports the inner diameter surface of the grip tube 45.

是以，上述即為本發明所提供一較佳實施例扭力扳手扭力調整裝置各部構件及組裝方式之介紹，茲再將本發明之實施例作動特點介紹如下。 Therefore, the foregoing is an introduction to the components and assembly methods of a preferred embodiment of the torque wrench torque adjusting device provided by the present invention. The operating characteristics of the embodiment are introduced as follows.

使用者可以透過扭轉握管45與預力機構30互動，來調整預力機構30施予工作頭之14預壓力。 The user can interact with the pre-force mechanism 30 by twisting the grip tube 45 to adjust the 14 pre-pressure applied by the pre-force mechanism 30 to the working head.

握管45轉動過程中各第一滾珠43被第一珠孔41限位於柄部12，故只能沿握管45內徑面之珠槽452運動，藉此使握管45轉動過程會沿柄部12延伸方向位移，並同步牽引預力機構30改變施予工作頭之14預壓力。 During the rotation of the grip tube 45, each first ball 43 is confined to the handle 12 by the first bead hole 41, so it can only move along the bead groove 452 on the inner diameter surface of the grip tube 45, so that the grip tube 45 rotates along the handle The part 12 is displaced in the extending direction, and the pre-loading mechanism 30 is synchronized to change the 14 pre-pressure applied to the working head.

過程中，使用者可以進一步配合觀看第一、二扭力值刻度122、456，來了解目前的扭力值調整狀態。 During the process, the user can further cooperate with watching the first and second torque value scales 122 and 456 to understand the current torque value adjustment status.

由於握管45與柄部12具有一間隙，其握管45相對於管螺紋454之另一端，可透過各第二珠孔42中的各第二滾珠44，與C扣槽56中的C扣57外周側提供頂抵，增加該端握管45運動之穩定性。 Since the grip tube 45 and the handle 12 have a gap, the other end of the grip tube 45 relative to the pipe thread 454 can penetrate the second balls 44 in the second bead holes 42 and the C buckle in the C buckle groove 56 57 provides a push against the outer peripheral side, which increases the stability of the movement of the end grip tube 45.

請參閱圖6、7所示，上述實施例中之第一珠孔41及珠槽452位置可以對稱互換。即第一珠孔41’改設於握管45內徑面，而珠槽452’則改繞圍柄部12外周側設置。至於作動方式則與上述實施例相同，故不多作贅述。 Please refer to FIGS. 6 and 7 that the positions of the first bead hole 41 and the bead groove 452 in the above embodiment can be symmetrically exchanged. That is, the first bead hole 41' is changed to the inner diameter surface of the grip tube 45, and the bead groove 452' is changed to be provided around the outer circumference of the handle portion 12. As for the operation mode, it is the same as the above-mentioned embodiment, so it will not be described in detail.

以上所述說明，僅為本發明的較佳實施方式而已，意在明確本發明的特徵，並非用以限定本發明實施例的範圍，本技術領域內的一般技術人員根據本發明所作的均等變化，以及本領域內技術人員熟知的改變，仍應屬本發明涵蓋的範圍。 The above description is only the preferred embodiments of the present invention. It is intended to clarify the characteristics of the present invention and is not intended to limit the scope of the embodiments of the present invention. Those skilled in the art make equal changes based on the present invention. , And changes well known to those skilled in the art should still fall within the scope of the present invention.

10:扳手 10: Wrench

12:柄部 12: handle

122:第一扭力值刻度 122: The first torque value scale

14:操作頭 14: Operation head

30:預力機構 30: Pre-force mechanism

40:扭力調整裝置 40: Torque adjustment device

45:握管 45: grip tube

456:第二扭力值刻度 456: Second torque value scale

Claims

一種扭力扳手扭力調整裝置，其包括： A torque adjusting device for a torque wrench, which includes:

一扳手，具有一中空之柄部及一設於該柄部一端之操作頭； A wrench with a hollow handle and an operating head set at one end of the handle;

一預力機構，係容置於該柄部並對該操作頭提供一預壓力； A pre-force mechanism is housed in the handle and provides a pre-pressure to the operating head;

一扭力調整裝置，係與該預力機構互動，俾以調節該預壓力，其包括： A torque adjusting device interacts with the pre-force mechanism to adjust the pre-pressure, which includes:

複數第一珠孔，係設於該柄部遠離該操作頭另一端外側面； A plurality of first bead holes are arranged on the outer surface of the handle away from the other end of the operating head;

複數第一滾珠，係分別容置於各該第一珠孔；及 The plurality of first balls are respectively accommodated in each of the first ball holes; and

一握管，係與該預力機構連接並套銜於該柄部外周側，其內徑面對應各該第一珠孔凹陷形成有一連續螺旋之珠槽，提供各該第一滾珠滑動。 A grip tube is connected with the pre-force mechanism and sleeved on the outer peripheral side of the handle, and its inner diameter surface corresponds to each of the first bead holes to form a continuous spiral bead groove for sliding of each of the first balls.

如請求項1所述之所述扭力扳手扭力調整裝置，其中該柄部於該操作頭與各該第一珠孔之間外周側，設有複數第二珠孔，提供複數第二滾珠容置，並頂抵該握管內徑面。 The torque wrench torque adjusting device according to claim 1, wherein the handle is provided with a plurality of second ball holes on the outer peripheral side between the operating head and each of the first ball holes to provide a plurality of second ball accommodating , And abut the inner diameter surface of the grip tube.

如請求項1所述之所述扭力扳手扭力調整裝置，其中該柄部於該操作頭與各該第二珠孔之間外周側，設有一C扣槽，提供一C扣容置，並頂抵該握管內徑面。 The torque wrench torque adjusting device according to claim 1, wherein the handle is provided with a C-buckle groove on the outer peripheral side between the operating head and each of the second bead holes to provide a C-buckle accommodating and top Abut the inner diameter surface of the holding tube.

一種扭力扳手扭力調整裝置，其包括：一扳手，具有一中空之柄部及一設於該柄部一端之操作頭；一預力機構，係容置於該柄部並對該操作頭提供一預壓力；一扭力調整裝置，係與該預力機構互動，俾以調節該預壓力，其包括：一握管，係與該預力機構連接並套銜於該柄部外周側，其內徑面設有複數第一珠孔；複數第一滾珠，係分別容置於各該第一珠孔；及一珠槽，係對應各該第一珠孔形成於該柄部之連續螺旋凹槽，提供各該第一滾珠滑動。 A torque adjusting device for a torque wrench, comprising: a wrench with a hollow handle and an operating head provided at one end of the handle; a pre-force mechanism which is accommodated in the handle and provides an operating head Pre-pressure; a torque adjusting device interacts with the pre-force mechanism to adjust the pre-pressure, including: a grip tube connected with the pre-force mechanism and sleeved on the outer peripheral side of the handle, its inner diameter The surface is provided with a plurality of first bead holes; a plurality of first balls are respectively accommodated in each of the first bead holes; and a bead groove is a continuous spiral groove formed on the shank corresponding to each of the first bead holes, Each of the first balls is provided to slide.

如請求項1或4所述之所述扭力扳手扭力調整裝置，其中該柄部毗鄰該握管截面處之外周側，設有第一扭力值刻度。 The torque wrench torque adjusting device according to claim 1 or 4, wherein the handle is adjacent to the outer peripheral side of the cross section of the grip tube and is provided with a first torque value scale.

如請求項5所述之所述扭力扳手扭力調整裝置，其中該握管外周側毗鄰該第一扭力值刻度處設有一第二扭力值刻度。 The torque wrench torque adjusting device according to claim 5, wherein a second torque value scale is provided on the outer peripheral side of the grip tube adjacent to the first torque value scale.